DIPTI METAL INDUSTRIES
ASTM A182 F317L Stainless Steel Flanges: Global Manufacturer & Exporter
Dipti Metal Industries is a leading global ASTM A182 F317L Flanges manufacturer and exporter of ASTM A182 F317L Stainless Steel Flanges from Mumbai, India. F317L (UNS S31703, EN 1.4438 / X2CrNiMo18-15-4) is a low-carbon, molybdenum-bearing austenitic stainless steel. It offers significantly enhanced resistance to pitting, crevice corrosion, and general corrosion compared to F316, especially in aggressive chloride-containing and acidic environments, such as sulfuric acid. We supply a comprehensive range of ASTM A182 F317L flange types, ensuring high quality and performance for critical applications in chemical processing, marine engineering, pulp & paper, pharmaceutical, and oil & gas industries worldwide. The typical HS Code for these products is 7307.21.
Overview: Dipti Metal Industries' Expertise in ASTM A182 F317L Stainless Steel Flanges
Dipti Metal Industries stands as a globally recognized ASTM A182 F317L Flanges manufacturer and ASTM A182 F317L Flanges exporter of high-performance ASTM A182 F317L Stainless Steel Flanges, operating from our advanced facilities in Mumbai, India. ASTM A182 F317L is a specific grade within the ASTM A182 standard, denoting a forged or rolled low-carbon, molybdenum-bearing austenitic stainless steel. It is an enhanced version of the 316L grade, with a higher molybdenum content (3-4% compared to 2-3% in 316L) and slightly higher nickel content, which significantly boosts its resistance to pitting, crevice corrosion, and general corrosion, particularly in aggressive environments like sulfuric acid and chloride-rich media. The "L" designation (low carbon) ensures excellent resistance to intergranular corrosion after welding.
Our commitment to quality ensures that all ASTM A182 F317L flanges are manufactured and supplied in strict adherence to major international standards, including **ASTM A182 (forged F317L), ASME B16.5 (Pipe Flanges and Flanged Fittings NPS 1/2 through NPS 24), ASME B16.47 (Large Diameter Steel Flanges NPS 26 through NPS 60), ASME B16.36 (Orifice Flanges), ASME B16.48 (Line Blanks), and EN 1092-1 (Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated)**. Every shipment is accompanied by comprehensive **EN 10204 3.1/3.2 Material Test Certificates (MTCs)**, guaranteeing full chemical and mechanical traceability. Dipti Metal is your reliable partner for F317L Stainless Steel Flange solutions, supporting complex and critical projects worldwide with unparalleled material integrity.
Key Features & Advanced Benefits of Our ASTM A182 F317L Stainless Steel Flanges
Dipti Metal Industries' ASTM A182 F317L Stainless Steel Flanges offer a distinct set of advantages, making them ideal for exceptionally challenging corrosive industrial environments:
- Significantly Enhanced Pitting & Crevice Corrosion Resistance: With a higher molybdenum content (3-4% compared to 2-3% in F316/F316L), F317L provides superior resistance to pitting and crevice corrosion, making it invaluable in highly aggressive chloride-containing environments, such as marine applications and specific chemical process streams.
- Superior Resistance to Sulfuric Acid: F317L exhibits excellent resistance to sulfuric acid over a wide range of concentrations and temperatures, often outperforming F316/F316L in such media.
- Excellent Intergranular Corrosion Resistance (Low Carbon): The "L" designation signifies low carbon content (0.03% max), which effectively minimizes chromium carbide precipitation during welding. This eliminates the need for post-weld annealing, ensuring optimal corrosion resistance in the as-welded condition.
- Good High-Temperature Strength: While primarily known for its corrosion resistance, F317L maintains good strength at elevated temperatures, similar to 316L.
- Broad Corrosion Resistance: Offers enhanced resistance to a wider array of aggressive chemicals and acids compared to F316/F316L, expanding its applicability in demanding chemical process industries.
- Excellent Weldability & Formability: The low carbon content facilitates easy welding without the risk of sensitization. It also possesses good ductility and formability for fabrication into complex flange geometries.
Our Product Forms & Dimensions for ASTM A182 F317L Stainless Steel Flanges
Dipti Metal Industries supplies a comprehensive range of ASTM A182 F317L Stainless Steel Flanges in various types and dimensions, all conforming to strict international standards to meet the demanding requirements of your projects.
ASTM A182 F317L Weld Neck Flanges
Description: Designed with a long tapered hub that can be butt-welded to a pipe, reducing stress concentration at the base of the flange. Ideal for high-pressure, high-temperature, or sub-zero applications where fluid flow is critical.
- Standards: ASME B16.5, ASME B16.47 Series A/B, EN 1092-1
- Size Range: NPS 1/2" to 60" (DN15 to DN1500)
- Pressure Class: 150# to 2500# (PN10 to PN400)
- Facing: Raised Face (RF), Ring Type Joint (RTJ)
ASTM A182 F317L Slip-On Flanges
Description: These flanges slip over the outside of the pipe and are then externally and internally fillet welded. They are easier to align than Weld Neck flanges and are preferred for lower pressure applications, especially where space is a constraint.
- Standards: ASME B16.5, EN 1092-1
- Size Range: NPS 1/2" to 24" (DN15 to DN600)
- Pressure Class: 150# to 600# (PN10 to PN100)
- Facing: Raised Face (RF), Flat Face (FF)
ASTM A182 F317L Blind Flanges
Description: Used to blank off the end of a piping system or a valve opening. They are suitable for high-pressure applications and provide easy access to the pipeline once removed. Commonly used for future expansions or inspection points.
- Standards: ASME B16.5, ASME B16.47 Series A/B, EN 1092-1
- Size Range: NPS 1/2" to 60" (DN15 to DN1500)
- Pressure Class: 150# to 2500# (PN10 to PN400)
- Facing: Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)
ASTM A182 F317L Socket Weld Flanges
Description: Designed for small diameter, high-pressure piping systems where the pipe is inserted into a socket and fillet welded around the top. Provides good flow characteristics and is economical for smaller bore applications.
- Standards: ASME B16.5, EN 1092-1
- Size Range: NPS 1/2" to 4" (DN15 to DN100)
- Pressure Class: 150# to 2500# (PN10 to PN400)
- Facing: Raised Face (RF)
ASTM A182 F317L Threaded Flanges
Description: Also known as screwed flanges, these are threaded onto the pipe without welding. Suitable for low-pressure, non-cyclic applications where welding may be hazardous or impossible, often in utility services.
- Standards: ASME B16.5, EN 1092-1
- Size Range: NPS 1/2" to 4" (DN15 to DN100)
- Pressure Class: 150# to 2500# (PN10 to PN400)
- Facing: Raised Face (RF)
ASTM A182 F317L Lap Joint Flanges
Description: These flanges consist of two components: a stub end and a loose backing flange. The stub end is butt-welded to the pipe, and the flange is free to rotate, simplifying bolt hole alignment. Ideal for frequent dismantling for inspection or cleaning.
- Standards: ASME B16.5, EN 1092-1
- Size Range: NPS 1/2" to 24" (DN15 to DN600)
- Pressure Class: 150# to 600# (PN10 to PN100)
- Facing: Flat Face (FF) with a Stub End
ASTM A182 F317L Orifice Flanges
Description: Used with orifice meters to measure the flow rate of fluids in a pipeline. They have additional bolt holes or jack screws for easy installation and removal of orifice plates. Supplied in pairs with tapping points.
- Standards: ASME B16.36
- Size Range: NPS 1" to 24" (DN25 to DN600)
- Pressure Class: 300# to 2500#
- Facing: Raised Face (RF) or Ring Type Joint (RTJ)
ASTM A182 F317L Spectacle Blind Flanges
Description: A safety device consisting of a figure-eight shaped metal piece, half solid and half open. It can be rotated to either completely block flow (blind side) or allow full flow (open side) in a pipeline, primarily for isolation during maintenance.
- Standards: ASME B16.48
- Size Range: NPS 1/2" to 24" (DN15 to DN600)
- Pressure Class: 150# to 2500#
- Facing: Raised Face (RF) or Ring Type Joint (RTJ)
Other ASTM A182 F317L Flange Types
- ASTM A182 F317L Long Weld Neck Flanges: Similar to Weld Neck but with an extended neck, often used for vessels.
- ASTM A182 F317L Reducing Flanges: Combines a flange with a reducer, connecting pipes of different nominal sizes.
- ASTM A182 F317L Ring Type Joint (RTJ) Flanges: Feature a groove for a metal ring gasket, providing a strong, leak-proof seal for high-pressure, high-temperature service.
- ASTM A182 F317L Plate Flanges: Simple flat plates with bolt holes, typically used for low-pressure or non-critical applications.
Technical Specifications: ASTM A182 F317L Stainless Steel Flanges
Our ASTM A182 F317L Stainless Steel Flanges are manufactured and supplied to strict technical specifications, ensuring precise chemical composition and robust mechanical properties for reliable performance in demanding environments.
Chemical Composition (Weight % Max, unless otherwise stated)
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.030 max |
| Manganese (Mn) | 2.00 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.030 max |
| Silicon (Si) | 1.00 max |
| Chromium (Cr) | 18.0 - 20.0 |
| Nickel (Ni) | 11.0 - 15.0 |
| Molybdenum (Mo) | 3.0 - 4.0 |
Note: The "L" designation indicates low carbon content (0.03% max) for enhanced resistance to intergranular corrosion after welding. The higher molybdenum (3.0-4.0%) and nickel (11.0-15.0%) distinguish it from F316L. Detailed specifications, including trace elements and specific analysis requirements, are available in the full ASTM A182 standard. All material test certificates (MTCs) conform to EN 10204 3.1/3.2.
Mechanical Properties (Minimum Requirements for Annealed F317L)
| Property | Value |
|---|---|
| Tensile Strength | 515 MPa (75 ksi) min |
| Yield Strength (0.2% Offset) | 205 MPa (30 ksi) min |
| Elongation in 50 mm (2 in.) | 35% min |
| Hardness (Brinell) | 217 HB max |
| Hardness (Rockwell B) | 95 HRB max |
Note: Mechanical properties can vary based on product form and heat treatment. For exact values, refer to the specific ASTM A182 standard.
Equivalent Grades & International Cross-References for ASTM A182 F317L
ASTM A182 F317L is a globally recognized and highly specialized low-carbon, molybdenum-bearing austenitic stainless steel. Dipti Metal Industries ensures that our supplied materials conform to the requirements of F317L and its most common international equivalent designations, facilitating seamless integration into diverse global projects. These equivalents represent the same or very similar material chemistry and properties, making them largely interchangeable for many critical high-corrosion applications.
| Standard | Grade / Designation | Description |
|---|---|---|
| ASTM (American Society for Testing and Materials) | A182 F317L | Forged or rolled alloy and stainless steel pipe flanges, forged fittings, and valves and parts for high-temperature service (Primary Reference). Low carbon, higher molybdenum. |
| UNS (Unified Numbering System) | S31703 | Official UNS designation for 317L Stainless Steel. |
| EN (European Norm) | X2CrNiMo18-15-4 (1.4438) | Corresponds to EN 10222-5 (Forgings for pressure purposes) and EN 10088-3 (Stainless steels). This is the direct European equivalent, noting the low carbon, 18% Cr, 15% Ni, and 4% Mo. |
| JIS (Japanese Industrial Standards) | SUS F317L | Corresponds to JIS G3214 (Stainless steel forgings for pressure uses) and JIS G4303 (Stainless steel bars). Japanese equivalent for forged F317L. |
| DIN (German Institute for Standardization) | 1.4438 (X2CrNiMo18-15-4) | German material number, identical to the EN designation, for low carbon, higher molybdenum austenitic stainless steel. |
| BS (British Standards) | 317S12 | Older British Standard designation for low carbon, higher molybdenum stainless steel, now largely superseded by EN standards. |
| AFNOR (French Standards) | Z2CND18-14-04 | French Standard designation for low carbon, higher molybdenum austenitic stainless steel. |
| ISO (International Organization for Standardization) | ISO 2604-2 (Equivalent) | While ISO does not have a single 'F317L' equivalent, the chemical composition aligns with several ISO standards for wrought stainless steel. ISO 15156-3 (for NACE) also references this composition for sour service applications. |
| GOST (State Standard of Russian Federation) | 03Kh17N14M3 (03Х17Н14М3) | Closest GOST equivalent, referencing a low-carbon 316/317 type with slightly higher molybdenum. |
Note: While these grades are generally considered equivalent for many applications, always consult specific project requirements and applicable codes, as minor differences in chemical composition, heat treatment, or mechanical properties can exist between standards. Dipti Metal Industries provides full certifications to ensure compliance with the specified standard.
HS Code for ASTM A182 F317L Stainless Steel Flanges
For international trade and customs classification, the Harmonized System (HS) Code for Stainless Steel Flanges, including ASTM A182 F317L, typically falls under:
- HS Code: 7307.21
- Description: Flanges of stainless steel.
Note: While this is the most common HS code, specific national customs regulations or the exact product characteristics (e.g., if combined with other materials) might lead to variations. Always verify with your customs broker or relevant authorities for precise classification for your specific shipment.
Extensive Industries & Applications for Dipti Metal Industries' F317L Flanges
Dipti Metal Industries' ASTM A182 F317L Stainless Steel Flanges are indispensable in a broad spectrum of critical industrial sectors and demanding high-corrosion environments. Their unique properties ensure reliable and long-lasting performance:
- Chemical Processing Industry: Widely used for handling aggressive chemicals, especially sulfuric acid, phosphoric acid, and chloride solutions where F316/F316L may not provide sufficient resistance. Essential in reactors, heat exchangers, and process vessels.
- Pulp & Paper Industry: Crucial for bleaching equipment, digesters, and other components exposed to corrosive chemicals like chlorine dioxide, hypochlorites, and sulfites.
- Marine & Offshore Applications: For seawater cooling systems, desalination plants, and offshore structures where superior resistance to pitting and crevice corrosion in chloride environments is vital.
- Pharmaceutical & Biotechnology: For high-purity process lines, bioreactors, and cleanroom applications where enhanced corrosion resistance to aggressive cleaning agents and sterility are paramount.
- Textile Industry: Components in dyeing and finishing equipment where resistance to aggressive chemicals and high temperatures is required.
- Food Processing Industry: Used in specialized equipment where resistance to corrosive food acids and cleaning solutions is needed beyond what 316L can offer.
- Oil & Gas Industry: For certain components in sour gas service or where high chloride levels are encountered, requiring superior pitting resistance.
The unparalleled enhanced corrosion resistance, particularly to sulfuric acid and chlorides, combined with good high-temperature strength and reliability of ASTM A182 F317L Stainless Steel Flanges, make them the preferred choice for ensuring safety, integrity, and longevity in these diverse and demanding global sectors.
Global Export Capabilities & Logistics from India for ASTM A182 F317L Stainless Steel Flanges
Dipti Metal Industries is a proud Worldwide Exporter and Global Supplier of ASTM A182 F317L Stainless Steel Flanges, supported by an extensive network of Dealers, Distributors, and Stockists. We ensure timely and compliant delivery of our premium products, manufactured in our facilities, to major industrial hubs across the globe, with a strong focus on critical industrial regions worldwide, solidifying our position as a top international manufacturing and trading partner.
Key Importing Regions & Global Reach
- Algeria: Algiers, Oran
- Angola: Luanda, Huambo
- Egypt: Cairo, Alexandria, Port Said
- Ghana: Accra, Kumasi
- Kenya: Nairobi, Mombasa
- Libya: Tripoli, Benghazi
- Morocco: Casablanca, Rabat
- Mozambique: Maputo, Beira
- Nigeria: Lagos, Port Harcourt, Abuja (Key for Oil & Gas, Chemical)
- Rwanda: Kigali, Rubavu
- South Africa: Johannesburg, Durban, Cape Town, Sasolburg (Key for Mining & Chemical)
- Tanzania: Dar es Salaam, Mwanza
- Tunisia: Tunis, Sfax
- Uganda: Kampala, Gulu
- Botswana, Burkina Faso, Burundi, Cabo Verde, Central African Republic, Chad, Comoros, Congo (Republic), Congo (DRC), Côte d’Ivoire, Djibouti, Equatorial Guinea, Eritrea, Eswatini, Ethiopia, Gabon, Gambia, Guinea, Guinea-Bissau, Lesotho, Liberia, Madagascar, Malawi, Mali, Mauritania, Mauritius, Namibia, Niger, São Tomé & Príncipe, Senegal, Seychelles, Sierra Leone, Somalia, South Sudan, Sudan, Togo, Zambia, Zimbabwe
- Argentina: Buenos Aires, Cordoba
- Bolivia: La Paz, Santa Cruz
- Brazil: São Paulo, Rio de Janeiro, Salvador (Key for Oil & Gas, Chemical)
- Canada: Calgary, Edmonton, Vancouver, Toronto, Montreal (Key for Oil & Gas, Pulp & Paper)
- Chile: Santiago, Valparaíso
- Colombia: Bogota, Medellin
- Ecuador: Quito, Guayaquil
- Mexico: Mexico City, Monterrey, Guadalajara
- Panama: Panama City, Colón
- Peru: Lima, Arequipa
- USA: Houston, Los Angeles, New York, Chicago, New Orleans (Primary Market for Chemical, Marine, Pulp & Paper)
- Uruguay: Montevideo
- Venezuela: Caracas, Maracaibo
- Antigua & Barbuda, Bahamas, Barbados, Belize, Costa Rica, Cuba, Dominica, Dominican Republic, El Salvador, Grenada, Guatemala, Guyana, Haiti, Honduras, Jamaica, Nicaragua, Paraguay, Saint Kitts & Nevis, Saint Lucia, Saint Vincent & the Grenadines, Suriname, Trinidad & Tobago
- Bahrain: Manama, Sitra
- Bangladesh: Dhaka, Chittagong
- China: Shanghai, Guangzhou, Tianjin, Shenzhen (Key for Chemical & Marine)
- Hong Kong: Hong Kong City
- India: Mumbai, Delhi, Chennai, Kolkata, Bangalore, Hyderabad (Local Markets - Major Industrial Demand)
- Indonesia: Jakarta, Surabaya, Balikpapan (Key for Oil & Gas, Marine)
- Iran: Tehran, Mashhad
- Iraq: Baghdad, Basra
- Japan: Tokyo, Osaka, Nagoya (Primary for Marine & Chemical)
- Jordan: Amman, Irbid
- Kazakhstan: Nur-Sultan, Almaty
- Kuwait: Kuwait City, Ahmadi
- Lebanon: Beirut, Tripoli
- Malaysia: Kuala Lumpur, Johor Bahru, Port Klang
- Myanmar: Yangon, Mandalay
- Oman: Muscat, Sohar, Salalah
- Philippines: Manila, Cebu
- Qatar: Doha, Ras Laffan
- Saudi Arabia: Riyadh, Jeddah, Dammam, Al Khobar, Jubail (Key for Oil & Gas, Chemical)
- Singapore: Singapore City (Key for Chemical & Industrial Logistics)
- South Korea: Seoul, Busan, Ulsan (Primary for Marine & Chemical)
- Sri Lanka: Colombo, Kandy
- Taiwan: Taipei, Kaohsiung
- Thailand: Bangkok, Rayong, Laem Chabang
- Turkey: Istanbul, Izmir, Ankara
- UAE: Dubai, Abu Dhabi, Sharjah, Ajman, Ras Al Khaimah (Key for Oil & Gas, Chemical)
- Uzbekistan: Tashkent, Samarkand
- Vietnam: Ho Chi Minh City, Hanoi, Da Nang
- Afghanistan, Armenia, Azerbaijan, Bhutan, Brunei, Cambodia, Cyprus, Georgia, Kyrgyzstan, Laos, Maldives, Mongolia, Nepal, North Korea, Syria, Tajikistan, Timor-Leste, Turkmenistan, Yemen
- Austria: Vienna, Salzburg
- Belgium: Antwerp, Brussels, Ghent
- Croatia: Zagreb, Split
- Czechia: Prague, Brno
- Denmark: Copenhagen, Aarhus
- Finland: Helsinki, Tampere
- France: Paris, Marseille, Lyon (Key for Chemical & Power Generation)
- Germany: Frankfurt, Hamburg, Munich, Düsseldorf (Primary for Chemical, Pulp & Paper & Marine)
- Greece: Athens, Thessaloniki
- Hungary: Budapest, Debrecen
- Italy: Milan, Rome, Genoa
- Netherlands: Rotterdam, Amsterdam, The Hague (Key for Chemical & Marine)
- Norway: Oslo, Bergen
- Poland: Warsaw, Krakow
- Portugal: Lisbon, Porto
- Romania: Bucharest, Cluj-Napoca
- Russia: Moscow, Saint Petersburg, Kazan
- Serbia: Belgrade, Novi Sad
- Slovakia: Bratislava, Košice
- Spain: Madrid, Barcelona, Valencia
- Sweden: Stockholm, Gothenburg
- Switzerland: Zurich, Geneva, Basel
- United Kingdom: London, Manchester, Glasgow (Key for Marine & Chemical)
- Albania, Andorra, Belarus, Bosnia & Herzegovina, Bulgaria, Estonia, Iceland, Ireland, Kosovo, Latvia, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, North Macedonia, San Marino, Slovenia, Ukraine, Vatican City
- Australia: Sydney, Melbourne, Perth, Brisbane (Key for Mining, Marine & Chemical)
- New Zealand: Auckland, Wellington, Christchurch
- Papua New Guinea: Port Moresby, Lae
- Fiji, Kiribati, Marshall Islands, Micronesia, Nauru, Palau, Samoa, Solomon Islands, Tonga, Tuvalu, Vanuatu
Indian Loading Ports for Global Dispatch
- JNPT (Nhava Sheva)
- Mundra
- Chennai
- Kolkata
- Visakhapatnam
- Pipavav
- Kandla
Professional Export Packing & Documentation
- Packing: Custom crates/pallets for large/heavy flanges; cartons for smaller lots; polybags for individual items, all designed for seaworthy transit.
- Protection: Includes desiccants for moisture control, robust stretch wrap, plastic/plywood flange protectors, and steel banding for secure containment.
- Clear Labeling: Each package is clearly labeled with essential information such as ASTM A182 F317L, flange type, dimensions, pressure class, quantity, heat/lot numbers, purchase order (PO) number, and country of origin (COO).
Why Choose Dipti Metal Industries for Your ASTM A182 F317L Stainless Steel Flanges?
- Leading Global Manufacturer & Specialized Expertise: As a premier global ASTM A182 F317L Flanges manufacturer and ASTM A182 F317L Flanges exporter from Mumbai, we specialize in ASTM A182 F317L Stainless Steel Flanges, offering deep expertise in producing components renowned for significantly enhanced corrosion resistance (especially to sulfuric acid and chlorides), superior pitting/crevice corrosion resistance, and excellent weldability in critical chemical, marine, and pulp & paper applications worldwide.
- Uncompromising Quality & Certifications: Our F317L flanges are sourced from certified mills and manufactured under strict ISO 9001 processes. We provide full material traceability with EN 10204 3.1/3.2 MTCs, guaranteeing that every flange meets stringent ASTM A182 and ASME B16.5/B16.47/B16.36 standards for chemical composition, mechanical properties, and dimensional accuracy.
- Comprehensive Product Range & Customization: We maintain extensive stock of ASTM A182 F317L flanges in all major types (Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint, Orifice, Spectacle Blind, etc.), across a wide range of NPS sizes, pressure classes, and facings. Our advanced processing capabilities allow for **custom machining and fabrication** to exact client drawings and specialized specifications, optimizing project timelines and reducing waste.
- Global Network of Dealers & Distributors: With a robust worldwide presence, including a vast network of trusted Dealers, Distributors, and Stockists, we ensure prompt availability, localized support, and efficient supply chains for our global clientele, reaching even remote project sites with F317L Stainless Steel Flanges.
- Expert Technical Consultation: Decades of specialized stainless steel flange expertise enable our seasoned technical team to provide unparalleled guidance on material selection, application suitability, optimal specifications, welding considerations, and compliance for your most critical and demanding projects involving F317L.
- Robust Worldwide Export & Logistics: As a dedicated Worldwide Exporter, we guarantee efficient and reliable global delivery with comprehensive documentation support (including HS Code 7307.21 verification and customs clearance assistance), ensuring smooth logistics and timely project completion across all continents for ASTM A182 F317L Stainless Steel Flanges.
- Competitive Pricing & Superior Value Proposition: Leveraging strategic global sourcing partnerships, streamlined operations, and optimized supply chains, we consistently deliver premium quality F317L flanges at highly competitive prices. Our products offer exceptional long-term value through enhanced safety, superior operational integrity, and improved overall project cost-effectiveness in severe corrosive environments.
Request a Quote Today for Your ASTM A182 F317L Stainless Steel Flange Requirements!
Are you in search of reliable, high-quality ASTM A182 F317L Stainless Steel Flanges for your chemical processing (especially sulfuric acid), marine, pulp & paper, or oil & gas projects requiring significantly enhanced corrosion resistance to chlorides, superior pitting/crevice corrosion resistance, and excellent weldability? Contact Dipti Metal Industries, your expert leading global ASTM A182 F317L Flanges manufacturer, ASTM A182 F317L Flanges stockist, ASTM A182 F317L Flanges supplier, ASTM A182 F317L Flanges dealer, ASTM A182 F317L Flanges distributor, and worldwide exporter of F317L flanges from Mumbai, India, today. Our dedicated team is ready to discuss your specific requirements including flange type (Weld Neck, Slip-On, Blind, etc.), nominal pipe size (NPS / DN), pressure class, facing (RF, FF, RTJ), quantity, applicable standards (ASME B16.5, B16.47, EN 1092-1), and any custom fabrication needs. Request a personalized, custom quote to secure the most effective and dependable F317L flange solutions that guarantee enhanced operational integrity and prolonged system life in diverse industrial environments. Remember to mention HS Code 7307.21 if relevant for your customs purposes.
Price guidance (non-binding): USD 10.00–2000.00 per piece depending on flange type, dimensions, pressure class, quantity, processing, and delivery terms. Final prices are quotation-based.
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ASTM A182 F317L Stainless Steel Flanges — Frequently Asked Questions
ASTM A182 F317L Stainless Steel Flanges are forged or rolled pipe flanges, fittings, and parts made from Grade F317L austenitic stainless steel, as specified by the ASTM A182 standard. F317L (UNS S31703) is a low-carbon, molybdenum-bearing (3-4% Mo) stainless steel, essentially an upgraded version of 316L. Its enhanced chemical composition provides significantly superior resistance to pitting, crevice corrosion, and general corrosion, especially in aggressive chloride-containing and acidic environments, such as sulfuric acid. The "L" (low carbon) designation ensures excellent resistance to intergranular corrosion after welding. Dipti Metal Industries manufactures and exports a full range of F317L flanges for critical industrial applications globally.
ASTM A182 F317L offers enhanced corrosion resistance over F316L primarily due to its higher **molybdenum content (3-4% for F317L vs. 2-3% for F316L)** and slightly higher nickel content. These compositional differences lead to:
- Superior Pitting & Crevice Corrosion Resistance: The increased molybdenum significantly boosts F317L's ability to resist localized corrosion in aggressive chloride environments (e.g., seawater, brine).
- Enhanced Sulfuric Acid Resistance: F317L shows superior performance in sulfuric acid over a wider range of concentrations and temperatures compared to F316L.
- Better General Corrosion Resistance: It provides improved resistance to a broader spectrum of aggressive chemicals and acids.
ASTM A182 F317L Stainless Steel Flanges are critical in industries facing highly corrosive conditions:
- Chemical Processing: Especially for equipment handling sulfuric acid, phosphoric acid, and aggressive chloride solutions (e.g., in bleaching processes).
- Pulp & Paper Industry: Crucial for digesters, bleaching systems, and other components exposed to corrosive pulping and bleaching chemicals.
- Marine & Offshore: Used in seawater cooling systems, desalination plants, and offshore structures for superior resistance to chloride-induced pitting and crevice corrosion.
- Pharmaceutical & Biotechnology: For high-purity process lines, bioreactors, and cleanroom applications requiring enhanced corrosion resistance to aggressive cleaning agents.
- Textile Industry: Components in dyeing and finishing equipment exposed to strong chemicals.
- Food Processing: For specialized equipment handling corrosive food acids or stringent cleaning solutions.
Dipti Metal Industries ensures that all its ASTM A182 F317L Stainless Steel Flanges strictly conform to the highest international industry standards for material, dimensions, and testing. Key standards include:
- Material Specification: ASTM A182 (Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service).
- Dimensional Standards:
- ASME B16.5: Pipe Flanges and Flanged Fittings (NPS 1/2 through NPS 24).
- ASME B16.47: Large Diameter Steel Flanges (NPS 26 through NPS 60), Series A and Series B.
- ASME B16.36: Orifice Flanges.
- ASME B16.48: Line Blanks (for Spectacle Blinds).
- EN 1092-1: Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated.
- Quality Documentation: All products are supplied with EN 10204 3.1/3.2 Material Test Certificates (MTCs), ensuring full traceability and compliance with chemical and mechanical property requirements.
Yes, ASTM A182 F317L Stainless Steel Flanges exhibit excellent weldability by common fusion welding methods. The "L" designation, signifying a low carbon content (0.03% max), is crucial for its weldability. This low carbon level effectively minimizes the precipitation of chromium carbides at grain boundaries during welding or subsequent exposure to sensitizing temperatures (427°C - 816°C). This means that F317L can be welded without the risk of sensitization and does not typically require post-weld annealing, even in thick sections. This property makes it highly advantageous for fabricated components in corrosive environments where maintaining corrosion resistance in the as-welded condition is paramount. Specific filler metals like ER317L are typically recommended to ensure the weld metal matches the corrosion resistance of the base material. Dipti Metal provides comprehensive guidance on welding procedures for F317L.
For international shipping and customs purposes, the typical Harmonized System (HS) Code for ASTM A182 F317L Stainless Steel Flanges, along with other stainless steel flanges, is **7307.21**. This code specifically covers "Flanges of stainless steel" under the broader category of "Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel." While 7307.21 is the most common and generally applicable code, it's always advisable to confirm the exact HS code with a customs broker or relevant trade authority for your specific country of import to ensure accurate classification and avoid delays.
What Our Customers Say About Our ASTM A182 F317L Stainless Steel Flanges
“Dipti Metal's ASTM A182 F317L Weld Neck Flanges are indispensable for our sulfuric acid lines. Their superior corrosion resistance in such aggressive media is unmatched, ensuring plant safety and operational longevity. Exceptional quality and reliable supply.”
— Sulphuric Acid Plant Manager – Process Engineering Head, AcidTech Solutions, Houston, USA
“We've sourced F317L Blind and Slip-On Flanges from Dipti Metal for our bleaching and chemical recovery units. Their enhanced resistance to chlorides and various process chemicals is critical. Reliable global deliveries and full documentation are highly valued.”
— Pulp & Paper Mill Engineer – Maintenance Supervisor, PaperFlow Industries, Düsseldorf, Germany
“For challenging subsea and offshore applications with high chloride content, Dipti Metal's ASTM A182 F317L Socket Weld Flanges consistently provide superior pitting and crevice corrosion resistance. Their responsiveness and adherence to specifications are excellent for critical projects.”
— Offshore Oil & Gas Engineer – Senior Materials Specialist, Subsea Energy Corp., Singapore
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