ASTM A403 WP316L Pipe Fittings | 316L Stainless Steel Pipe Fittings | 316L Buttweld Pipe Fittings
Overview
MetalWorld offers a complete range of ASTM A403 WP316L pipe fittings, manufactured with premium quality materials to meet international standards. As a leading supplier, we provide fast delivery and competitive pricing on ASTM A403 WP316L Buttweld Pipe Fittings, including elbows, tees, reducers, bends, caps, nipples, crosses, and more.
Product Range
Our ASTM A403 WP316L pipe fittings are available in various types:
- Elbows: 90 Degree, 45 Degree, 180 Degree, 1.5D, Long Radius, and Piggable Bends
- Reducers: Concentric and Eccentric
- Tees: Equal and Unequal
- Caps, Nipples, Crosses, Stubs, and Bends
Standards and Specifications
- Standard: ASTM A403 WP316L covers wrought austenitic stainless steel fittings for pressure piping applications.
- Materials: Forged, bars, plates, seamless, or welded tubular products.
- Manufacturing Processes: Forging, hammering, pressing, extruding, bending, welding, machining, and more.
- Testing: Chemical and product analyses, tension testing for tensile properties, visual inspections for surface quality.
Types of Fittings
ASTM A403 WP316L fittings are designed for butt welding, creating robust joints for systems carrying fluids such as oil, gas, steam, and chemicals. These fittings provide efficient, long-lasting solutions in a range of industrial applications.
Fitting Classes
ASTM A403 WP grades come in various classes:
- WP-S: Seamless
- WP-W: Welded with RT or UT on all welds
- WP-WX: Radiographic testing on all welds
- WP-WU: Ultrasonic testing on all welds
Mechanical and Physical Properties
ASTM A403 WP316L, with low carbon content, offers excellent corrosion resistance and durability, making it ideal for welded components over 6mm thick. The austenitic structure ensures toughness down to cryogenic temperatures and higher strength at elevated temperatures.
Dimensions and Specifications
- Dimensions: ANSI/ASME B16.9, B16.28, MSS-SP-43
- Range: ½”NB to 48″NB in Sch 10s to XXS
- Types: Seamless, Welded, Fabricated
- Bending Radius: R=1D, 2D, 3D, 5D, 10D, or custom
Applications
Our fittings are utilized in a variety of industries:
- Energy: Oil, gas, nuclear, and geothermal power plants
- Food and Beverage: Processing and cold chain storage
- Pharmaceuticals: Production facilities for medicines and vaccines
- Semiconductors: Electronics manufacturing
- Construction and Manufacturing: Plastics, roofing, wiring, and more
Packing and Shipment
Each fitting is individually wrapped in waterproof materials and packed according to international standards to prevent damage during transit. We offer packaging in bundles, wooden boxes, and crates with clear labeling for easy identification.
Delivery
Delivery time ranges from 10-25 days, with expedited options available based on stock levels.
Global Reach
MetalWorld exports ASTM A403 WP316L pipe fittings to numerous countries, including the USA, Canada, Saudi Arabia, the UAE, Singapore, Malaysia, Europe, Africa, Asia, and the Americas.
Contact MetalWorld
As a trusted manufacturer and supplier of ASTM A403 WP316L pipe fittings, MetalWorld is committed to delivering the highest standards of quality and service. For inquiries or to place an order, contact us today.
ASTM A403 WP316L Pipe Fittings Specification
Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings
The ASTM A403 WP316L standard applies to wrought austenitic stainless steel fittings designed for pressure piping applications. The fittings are made from materials such as forgings, bars, plates, or seamless or welded tubular products. Manufacturing processes may include hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining, or a combination of these. All fittings must undergo a heat-treatment process to ensure durability and performance.
Chemical and Product Analysis Fittings are subject to chemical and product analyses to confirm they meet required standards for elements such as carbon, manganese, phosphorus, sulfur, silicon, chromium, molybdenum, and titanium. Tension testing is also performed to determine the tensile and yield strength properties of the material. The fittings are visually inspected for surface imperfections, discontinuities, and mechanical marks to ensure quality.
Butt Weld Pipe Fittings Butt weld fittings are designed to be welded on-site, creating a secure connection between pipes. These fittings allow for changes in direction, diameter, or branching within a piping system, supporting efficient and safe transportation of fluids such as oil, gas, steam, and chemicals across various distances. Other fitting options include threaded and socket-weld types.
Grades and Classes of Austenitic Stainless Steel Fittings This specification includes several grades of austenitic stainless steel alloys, designated by prefixes based on applicable ASTM/ASME or MSS standards. Each WP stainless grade offers different class options, indicating whether the fitting is seamless or welded. Class designations also specify the nondestructive testing method and the extent of examination required. Note that there are no class designations for corrosion-resistant (CR) grades.
Class Designations for WP Grades
- WP-S: Seamless fittings.
- WP-W: Welded, with radiographic (RT) or ultrasonic (UT) examination for all pipe welds using filler metal. All manufacturer welds, except as excluded by A/SA403 paragraph 5.4.3.
- WP-WX: All welds must undergo radiographic examination, with or without filler metal.
- WP-WU: All welds are subject to ultrasonic examination, with or without filler metal.
- WPgrade-grade-class: A dual-grade class for fittings meeting both chemical and physical requirements of specified grades (e.g., 304-304L, with classes S, W, WX, or WU).
This specification provides an essential guide for industries relying on reliable, high-quality stainless steel fittings in critical applications.
Fitting Classes for WP Grades
| CR | Corrosion resistant grade. S through WU Classes do not apply. |
| WP-S | Seamless |
| WP-W | Welded, RT or UT all pipe starting material welds made with filler metal. All fitting manufacturer welds except as excluded in A/SA403 paragraph 5.4.3. If UT is substituted for RT, all welds must be examined 100% for their length as required by A/SA403 paragraph 5.6 |
| WP-WX | RT all welds with or without filler metal. |
| WP-WU | UT all welds with or without filler metal. |
| WPgrade-grade-class | Insert grades (304-304L) and class (S,W,WX, or WU). Applies to fittings meeting all chemical and physical requirements of both grades. |
UNS S31604
ASTM A403 WP316L the low carbon version of 316 and is immune from sensitisation (grain boundary carbide precipitation). Thus it is extensively used in heavy gauge welded components (over about 6mm). There is commonly no appreciable price difference between 316 and 316L stainless steel.
ASTM A403 WP316 is the standard molybdenum-bearing grade, second in importance to 304 amongst the austenitic stainless steels. The molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments.
The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures.
Compared to chromium-nickel austenitic stainless steels, 316L stainless steel offers higher creep, stress to rupture and tensile strength at elevated temperatures.
Prosaic Steel and Alloy Supply Complete Range of Products in ASTM A403 WP316 including Elbow, Tee, Reducer, End Caps, Nipple etc.
ASTM A403 WP316 Pipe Fittings Range
Prosaic Steell and Alloys was established in 1985 and have 3 decades of experience in manufacturing ASTM A403 WP316 pipe fittings and flanges in accordance to ASME B16.9/ B16.11 with commitment to provide world class quality to our customers at competitive price by using innovative production system and process.
| Type | Seamless / Welded / Fabricated |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Range | ½”NB to 48″NB in Sch 10s, 40s, 80s, 160s, XXS. |
| Dimensions | ANSI/ASME B16.9, B16.28, MSS-SP-43. |
| A403 Stainless Steel Pipe Fittings Specification | ||||
|---|---|---|---|---|
| A403 Stainless Steel Buttweld (B/W) Fittings Material | Size (in mm) |
Sch. & Swg. |
SS Fittings Specification | SS Pipe Fittings Items |
| A403 WP316L Stainless Steel Seamless Fittings | 15 NB to 300 NB |
Sch. 5 to Sch. XXs |
A-403 B/W ANSI B16.9 |
Bend (Long & Short) R=2D,3D,5D,10D Etc elbow ( 180o, 90o & 45o) T ee (Equal & Unequal) Reducer (Con & Ecc) CAP Stubend (Long & Short) Nipple (Barrel) |
| A403 WP316L Stainless Steel Welded [ERW] Fittings | 15 NB to 600 NB |
Sch. 5 to Sch. 80s |
A-403 B/W ANSI B16.9 |
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| Material | AISI 304, AISI 304L, AISI 304H, AISI 316, AISI 316L, AISI 316LN, AISI 316Ti, AISI 309, AISI 317, AISI 317L, ASTM A403 310S, AISI 321, AISI 321H, AISI 347, AISI 347H, AISI 410, AISI 420, AISI 446, AISI 202 DIN 1.4301/7, DIN 1.4401/4, DIN 1.4541, DIN 1.4571 |
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| Value Added Service | Polish (Electro & Commercial) Heat Treatment Annealed & Pickled, Sand Blasting Machining Etc. |
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| Standard | ASTM, ASME | ||||
| End Connection | Butt Weld | ||||
| Type | Straight, Seamless / Welded / Fabricated Stainless Fittings | ||||
| Designation | A 403 Pipe Fittings, SA 403 Fittings | ||||
| Dimension Standard | Manufacturing as per ASME/ANSI B16.9, ASME B16.25, ASME B16.28, ASME B16.49, MSS-SP-43 Fittings | ||||
| Thickness | Sch 5s Fittings, Sch 10s Fittings, Sch 40s Fittings, Sch 80s Fittings, Sch 160s Fittings, Sch XXS Fittings manufacturers in India |
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| Size | 1/2 Inch to 48 Inch | ||||
| Two Joint / Two Halve Butt weld Fittings Size | 6″ to 48″ | ||||
| Producing A403 Stainless Steel Pipe Fittings in form of : |
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| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom Pipe Bend | ||||
| Manufacturing Specification: | ASME: ANSI B16.9, ANSI B16.28, ASME B16.25, MSS-SP-43, DIN: DIN2605, DIN2615, DIN2616, DIN2617, DIN28011, EN: EN10253-1, EN10253-2 | ||||
| Procure Raw Materials from | Japanese Mills, European Mills, US Mills, Korean Mills | ||||
| Other Form | A403 Stainless Steel Dairy Fitting | ||||
ASTM A403 WP316L Pipe Fittings Chemical Composition
| % | 316 | 316L | 316H | 316Ti |
| C | 0.0-0.07 | 0.0-0.03 | 0.04-0.08 | 0.0- 0.08 |
| Mn | 0.0-2.0 | 0-2.0 | 0.0-2.00 | 0.0-2.00 |
| Si | 0.0-1.0 | 0.0-1.00 | 0.0-1.00 | 0.0- 1.00 |
| P | 0.0-0.05 | 0.0-0.05 | 0-0.04 | 0.0-0.05 |
| S | 0.0-0.02 | 0.0-0.02 | 0.0-0.02 | 0.0-0.03 |
| Cr | 16.50-18.50 | 16.50-18.50 | 16.50-18.50 | 16.50- 18.50 |
| Mo | 2.00-2.50 | 2.00-2.50 | 2.00-2.50 | 2.00- 2.50 |
| Ni | 10.00-13.00 | 10.00-13.00 | 10.00-13.00 | 10.50- 14.00 |
| Ti | – | – | – | 0.40- 0.70 |
| Fe | balance | balance | balance | balance |
| Euronorm | UNS | BS | En | Grade |
| 1.4401 | S31600 | 316S31 | 58H | 316 |
| 1.4404 | S31603 | 316S11 | – | 316L |
| – | S31609 | 316S51 | – | 316H |
| 1.4571 | – | 320S31 | – | 316Ti |
ASTM A403 WP316L Pipe Fittings Mechanical and Physical Properties
Typical Values at 68°F (20°C)
| Grade | Tensile Str (MPa) min |
Yield Str 0.2% Proof (MPa) min |
Elong (% in 50mm) min |
Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 316 | 515 | 205 | 40 | 95 | 217 |
| 316L | 485 | 170 | 40 | 95 | 217 |
| 316H | 515 | 205 | 40 | 95 | 217 |
| Grade | Density (kg/m3) |
Elastic Modulus (GPa) |
Mean Co-eff of Thermal Expansion (µm/m/°C) | Thermal Conductivity (W/m.K) |
Specific Heat 0-100°C (J/kg.K) |
Elec Resistivity (nΩ.m) |
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| 0-100°C | 0-315°C | 0-538°C | At 100°C | At 500°C | |||||
| 316/L/H | 8000 | 193 | 15.9 | 16.2 | 17.5 | 16.3 | 21.5 | 500 | 740 |
ASTM A403 WP316L Other Available Grades
ASTM A403 WP316L Pipe Fittings Available Grades
ASTM A403 WP316L Pipe Fittings Packing and Shipment
ASTM A403 WP316L Pipe Fittings is sleeved into plastic bag individually, pieces wrapped with water-proof material, bundled with nylon rope. Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D. Great care is taken during operation and transportation.
ASTM A403 WP316L Pipe Fittings packing will be according to international standard in bundles strapped by strips then into containers to avoid any damage.
Delivery: Within 10-25 days or asap if we have enough stock
Types of Packaging:
- – Bundles (hexagonal)
- – Wooden Boxes
- – Crates (steel/wooden)
- – Special crates for U-Bend tubes with each radius separated
- – Packaging for SS 316L/316LH Buttweld Pipe Fittings Stainless Steel as Per ASTM A403 as per customer’s requirements
Special Features:
- – Each bundle covered with plastic for protection against extreme weather.
- – End of 316L Stainless Steel Pipe Fittings protected by plastic Strip.
- – Bundles strapped with plastic strips.
- – Each radius of U-Bend tube separated by a separator.
- – Packaging list (laminated) placed with box/crate.
ASTM A403 WP316L Pipe Fittings Application and Usage
Fittings are used wherever liquids, gases, chemicals and other fluids are created, processed, transported, or used. Range of industries is very wide, as shown below:
- Energy related. Oil and gas industries, including upstream (exploration and production), midstream (transportation by ships, pipeline, rail, trucks; storage and wholesale) and downstream (refining into fuels or chemicals; marketing and distribution). Power plants using fossil or nuclear fuels. Geothermal energy for harnessing heat from the earth.
- Food and beverage production. From basic ingredients to elaborate desserts. From milk, to juices and other beverages. Cold chain to keep produce fresh, drinks and frozen foods at a set temperature. Desalination plants to transform seawater into drinking water for arid areas and various tropical islands.
- Pharmaceuticals and biotechproduction. Medicines and vaccines that treat illnesses and help restore bodies and minds to their top conditions.
- Semiconductor manufacturing: Microchips that go into all electronics, including smartphones, tablets, computers, television sets, telecom networks, …
- Pulp and paper production. Newsprint, glossy paper, cardboard boxes, books, writing paper, …
- Production of construction materials and plastics. From roofing materials, to glassmaking for windows, to copper wiring for transporting electricity, and various plastics throughout houses and office buildings.
ASTM A403 WP316L Pipe Fittings Dimension, Wall Thickness, Schedule Weight Chart
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DIMENSIONS FOR STRAIGHT FITTINGS
All dimensions given in inches for common diameters and wall thicknesses. Dimensions in accordance with ASME B16.9. Other sizes, schedules and wall thicknesses also available. |
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ASTM A403 WP316L Pipe Fittings Export Countries
We export ASTM A403 WP316L Pipe Fittings to Saudi Arabia, Iran, Iraq, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen, Syria, israel, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Mayanmar, Taiwan, Cambodia, Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States Of America, Canada, Mexico, Panama, Costa Rica, Puerto Rica, Trinidad And Tobago, Jamaica, Bahamas, Denmark, Russia, Norway, Germany, France, Italy, United Kingdom, Spain, Ukraine, Netherland, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Croatia, Slovenia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, The Republic Of Congo, Gabon, Europe, Africa, Asia, North America, South America, Middle East, Far East.etc.
Prosaic Steel and Alloys is a well known worldwide exporter of ASTM A403 WP316L Pipe Fittings, Prosaic Steel and Alloys is committed to provide each and every customer with the highest standard of customer service. We deals in ASTM A403 WP316L Pipe Fittings in India & Overseas, offering a wide range of ASTM A403 WP316L Pipe Fittings
Prosaic Steel and Alloys is Leading Manufacturer, Distributor, Exporter, Stockholder and Supplier of ASTM A403 WP316 Pipe Fittings in United States of America (USA), Saudi Arabia, Italy, Netherlands, Germany, Canada, Singapore, Malaysia, Indonesia
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MetalWorld exports ASTM A403 WP316L Pipe Fittings to a vast number of countries globally, including:
- Middle East: Saudi Arabia, Iran, Iraq, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Yemen, Syria, Jordan
- Asia: Israel, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Myanmar, Taiwan, Cambodia
- Americas: United States, Canada, Mexico, Panama, Costa Rica, Puerto Rico, Trinidad and Tobago, Jamaica, Bahamas, Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay
- Europe: Denmark, Russia, Norway, Germany, France, Italy, United Kingdom, Spain, Ukraine, Netherlands, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Croatia, Slovenia, Malta
- Africa: Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, Republic of Congo, Gabon
- Oceania and Other Regions: Serving Europe, Africa, Asia, North America, South America, Middle East, and Far East countries.
About MetalWorld
MetalWorld is a trusted, globally recognized exporter of ASTM A403 WP316L Pipe Fittings, committed to delivering the highest standards of quality and customer service. We supply a wide range of ASTM A403 WP316L Pipe Fittings both within India and internationally.
Product Offering
MetalWorld is a leading Manufacturer, Distributor, Exporter, Stockholder, and Supplier of ASTM A403 WP316L Pipe Fittings. Our product line includes a broad selection, such as elbows, tees, reducers, caps, and more. We provide high-quality stainless steel pipe fittings that meet ASTM A403 standards, ensuring reliable performance in various industries.
Key Products and Grades
Our products cover all popular ASTM A403 stainless steel grades, including:
- ASTM A403 WP316L
- ASTM A403 WP304L
- ASTM A403 WP321
- ASTM A403M
- Comparison of ASTM A403 vs A182 fittings
For inquiries, detailed specifications, and global shipments, contact MetalWorld to receive premium-quality fittings tailored to your requirements.





