ASTM A403 WP316 Fittings - Manufacturer of Stainless Steel 316L Buttweld Pipe Fittings in India

Supplier of ASME SA403 SS 316h Pipe Fittings | UNS S31600/S31603 Elbow, Tee, Reducer, WNR 1.4401 Stub End, Cross, DIN 1.4919 Cap, Pipe Bends At Competitive Price - 1/2" to 72" Inch as per ASTM A403

Prime Steel takes pride in being a standout manufacturer and supplier, specializing in the production and supply of premium stainless steel 316/316L pipe fittings. We distinguish ourselves through precision engineering and an unwavering commitment to delivering robust materials tailored to the diverse needs of our clients. Dedicated to customer satisfaction, our team of professionals offers personalized services and prompt responses to meet the unique needs of our clients. With an extensive inventory and a commitment to timely deliveries, Prime Steel stands as a reliable partner in the stainless steel market.

Product Details

  • Type: Buttweld Pipe Fittings

  • Material: Stainless Steel

  • ASTM: A403/SA403

  • Grade: 316/316L/316h

  • UNS: S31600/S31603/S31609

  • WERKSTOFF: 1.4401/1.4436, 1.4404/1.4435, 1.4919

Specifications of SS 316 Buttweld Pipe Fittings

Standards 01

ASTM A403 WP316 / ASME SA403 WP316L


Size range 02

Seamless Fittings: 1/2" - 24"
Welded Fittings: 4" - 72"

DIMENSIONS 04

ASME/ ANSI B16.9 | ASME B16.28 | MSS-SP-43 | BS1560 | BS4504 | BS10

Types / Form 03

Seamless, Welded & Fabricated / Elbow, Tee, Reducer, Stub End, Cross, Cap


Wall Thickness / Schedules 03

5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, Sch XXS

APPLICATIONS 06

oil and gas, petrochemicals, power generation, marine and food & beverage process lines, and water treatment

About Stainless Steel 316 / 316L / 316H Pipe Fittings?

Stainless Steel 316, 316L, and 316H Pipe Fittings are components used in piping systems made from these specific grades of stainless steel. These fittings play a crucial role in connecting and directing the flow of liquids or gases within industrial pipelines.

Stainless Steel 316 is an austenitic stainless steel alloy with a chromium-nickel content. It is known for its excellent corrosion resistance, particularly in chloride environments, making it suitable for a wide range of applications. The alloy contains molybdenum, enhancing its resistance to corrosion and providing strength at elevated temperatures. Stainless Steel 316 is commonly used in chemical processing, marine environments, and the manufacturing of pharmaceutical equipment.

Stainless Steel 316L is a low-carbon variation of Stainless Steel 316, with a maximum carbon content of 0.03%. The reduced carbon content minimizes the risk of sensitization during welding, making it suitable for welding applications. While it retains the corrosion resistance and high-temperature properties of 316, 316L is preferred in applications where weldability and prevention of carbide precipitation are critical. It is commonly used in industries such as food processing, pharmaceuticals, and medical devices.

Stainless Steel 316H is a high-carbon variant of Stainless Steel 316, with a carbon content ranging from 0.04% to 0.10%. The higher carbon content enhances the alloy's high-temperature strength. It is specifically designed for elevated-temperature applications and is commonly used in heat exchangers, furnace components, and other high-temperature industrial processes. However, attention to welding practices is essential to avoid sensitization.

  • 316 vs. 316L: The main distinction is the carbon content, with 316L having a lower carbon content to enhance weldability and reduce the risk of sensitization during welding.

  • 316 vs. 316H: 316H has a higher carbon content, making it suitable for high-temperature applications. However, precautions must be taken during welding to avoid sensitization.

Types of SS 316 Pipe Fittings

Check ANSI B16.28 / ASME B16.9 Buttweld Pipe Fittings Dimensions Download

Equivalent Grades of SS 316 Buttweld Pipe Fittings

STANDARD WERKSTOFF NR. UNS JIS BS GOST AFNOR EN
SS 316 1.4401/1.4436 S31600 SUS 316 316S31 / 316S33 Z7CND17‐11‐02 X5CrNiMo17-12-2 / X3CrNiMo17-13-3
SS 316L 1.4404 / 1.4435 S31603 SUS 316L 316S11 / 316S13 03Ch17N14M3 / 03Ch17N14M2 Z3CND17‐11‐02 / Z3CND18‐14‐03 X2CrNiMo17-12-2 / X2CrNiMo18-14-3
SS 316H 1.4919 S31609 SUS 316H

Chemical Composition of Stainless Steel 316L Pipe Fittings

Grade C Mn Si P S Cr Mo Ni Fe
316 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 16.00 – 18.00 2.00 – 3.00 11.00 – 14.00 67.845 min
316L 0.035 max 2.0 max 1.0 max 0.045 max 0.030 max 16.00 – 18.00 2.00 – 3.00 11.00 – 14.00 68.89 min
316H 0.10 max 2.0 max 0.75 max 0.045 max 0.030 max 16.00 – 18.00 2.00 – 3.00 10.00 – 14.00 68.89 min

Mechanical Composition of SS 316h Buttweld Fittings

Grade Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
316 8.0 g/cm3 1400 °C (2550 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %
316L 8.0 g/cm3 1399 °C (2550 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %
316H 8.0 g/cm3 1400 °C (2550 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

A403 WP316L Elbow

An A403 WP316L elbow is a specific type of pipe fitting made from stainless steel grade 316L, designed to change the direction of the flow in a piping system. The designation "A403" refers to the ASTM (American Society for Testing and Materials) standard specification for wrought austenitic stainless steel fittings for pressure piping applications. The "WP" prefix indicates that the material is intended for welding applications.

A403 WP316 Tee

An A403 WP316 tee is a specific type of pipe fitting designed for use in high-temperature and corrosive environments, and it is constructed from stainless steel grade 316. The designation "A403" refers to the ASTM (American Society for Testing and Materials) standard specification for wrought austenitic stainless steel fittings for pressure piping applications, and "WP316" specifies the particular alloy used.

A403 WP316h Cross

An A403 WP316H cross is a specific type of pipe fitting designed for applications in high-temperature and corrosive environments, crafted from stainless steel grade 316H. The A403 designation refers to the ASTM (American Society for Testing and Materials) standard specification for wrought austenitic stainless steel fittings for pressure piping applications, and WP316H designates the specific alloy used.

A403 WP316 Reducer

An A403 WP316 reducer is a specific type of pipe fitting crafted from stainless steel grade 316, designed to facilitate the transition between pipes of different diameters. The A403 designation refers to the ASTM (American Society for Testing and Materials) standard specification for wrought austenitic stainless steel fittings for pressure piping applications, and WP316 designates the specific alloy used.

A403 WP316L Cap

An A403 WP316L cap is a specific type of pipe fitting designed for use in high-temperature and corrosive environments, constructed from stainless steel grade 316L. The designation "A403" refers to the ASTM (American Society for Testing and Materials) standard specification for wrought austenitic stainless steel fittings for pressure piping applications, and "WP316L" specifies the particular alloy used.

  1. Stainless Steel 316:

    • Carbon Content: Typically contains a maximum of 0.08% carbon.
    • Applications: Suitable for a wide range of applications, including chemical processing, petrochemical industries, marine environments, and general-purpose use.
  2. Stainless Steel 316L:

    • Carbon Content: Contains a lower maximum carbon content of 0.03%.
    • Applications: Specifically designed for applications where weldability is crucial. Commonly used in industries such as food processing, pharmaceuticals, medical devices, and situations where sensitization during welding needs to be minimized.

Compared to 316, 316L stainless steel has a higher resistance to corrosion from chlorides and acids. This is because it has more molybdenum and less carbon.

"WP" stands for "welded pipe," indicating that the material is suitable for welding applications.

The lower carbon content in 316L improves its weldability by reducing the risk of carbide precipitation and sensitization during welding.

Due to the higher carbon content in 316H, precautions should be taken during welding to prevent sensitization and maintain corrosion resistance.

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