ASTM A403 Stainless Steel WP316 / 316L Stubends

In the world of piping systems, every component plays a vital role in ensuring the infrastructure's safety, reliability, and longevity. ASTM A403 Stainless Steel Stubend WP 316 and 316L are some of the most widely used and appreciated components. These students act as transition pieces between the pipe and the flange or fitting, providing immense flexibility in alignment, positioning, and restraint.

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The ASTM A403 Stainless Steel Stubend WP 316 comes in different types, each with varying characteristics and applications. These types include a long pattern stub end, a short pattern stub end, and a reducing stub end. Of these, the long pattern stub end is the most common and preferred due to its longer length, which reduces the turbulence of the fluid and minimizes the pressure drops. On the other hand, the short pattern stub end is used where space is a constraint, and the reducing stub end is crucial in transitioning between two pipes of different sizes.

The ASTM A403 Stainless Steel Stubend WP 316L is essential in various piping applications. Due to its remarkable corrosion resistance and excellent strength, this student finds extensive use in chemical processing, petrochemicals, pharmaceuticals, and food industries. It is also commonly used in high-temperature environments, such as power plants and nuclear reactors, where the piping systems must withstand extreme heat and pressure. ASTM A403 Stainless Steel Stubend WP 316L is highly recommended in cryogenic applications, as it has excellent toughness and resistance to low-temperature brittleness.
The ASTM A403 Stainless Steel Stubend WP 316 and 316L offer several unique benefits that make them popular among engineers, contractors, and project managers. Firstly, the structure of these students offers superior strength, durability, and toughness, making them ideal for demanding applications. Secondly, they resist corrosion and erosion, even in aggressive and harsh environments, thus ensuring long service life and low maintenance costs. Thirdly, these students exhibit excellent weldability and formability, allowing for easy installation and repair without compromising their integrity. Lastly, ASTM A403 Stainless Steel Stubend WP 316 and 316L are environmentally friendly, as they do not emit any toxic substances during their lifecycle, making them safe for use in food-grade and pharmaceutical applications.

ASTM A403 Stainless Steel Stubend WP 316 and 316L are critical in modern piping systems. Their distinct types and uses, coupled with their remarkable benefits in strength, durability, corrosion resistance, and weldability, make them a popular and preferred choice among professionals.


Stainless Steel WP316 Stubends offers several key features, including superior corrosion resistance, high strength & excellent weldability. Stubends are designed to provide a leak-proof & reliable connection between pipes.

Stainless Steel WP316 Stubends are available in various sizes and dimensions to accommodate different piping requirements. Common sizes range from 1/2 inch to 12 inches, with larger sizes also available upon request. The dimensions of stubends typically conform to industry standards such as ASME B16.9 or MSS-SP-43.

The key difference between Stainless Steel WP316 & Stainless Steel WP316L Stubends is their carbon content. WP316L stubends have a lower carbon content compared to WP316, which results in improved corrosion resistance in environments where sensitization to intergranular corrosion is a concern. WP316L stubends are often preferred for applications involving exposure to chloride-rich or high-temperature environments.

Specification of Stainless Steel WP316, 316L Stubends

Spec bag
Buttweld Stubends
Specifications: ASTM A403 / ASME SA403
Dimension Standard : ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Stubends Range :1/8" - 48"
Type : Seamless / ERW / Welded / Fabricated
Thickness : Schedule 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS and etc.
Form : Long Stub Ends, Pipe Stub Ends, Butt weld Long Stub Ends, Lap Joint Stub Ends.

Types of Stainless Steel WP 316, 316L Stubends

Stainless Steel WP316, 316L Long Stubends

ASTM A403 WP 316 / 316L Long Stubends

  • - ASTM A403 SS WP316 Long Stubends
  • - S31603 / S31603 Buttweld Long Stubends
  • - 1.4401 / 1.4404 Buttweld Pipe Long Stubends
  • - WP316L SS Long Stubends
  • - ASME SA403 SS 316 Long Stubends
  • - Stainless Steel WP316L Long Stubends Supplier
  • - SS WP316 Long Stubends Manufacturer
Stainless Steel WP316, 316L Short Stubends

ASTM A403 WP 316 / 316L Short Stubends

  • - ASTM A403 SS WP316 Short Stubends
  • - S31603 / S31603 Buttweld Short Stubends
  • - 1.4401 / 1.4404 Buttweld Pipe Short Stubends
  • - WP316L SS Short Stubends
  • - ASME SA403 SS 316 Short Stubends
  • - Stainless Steel WP316L Short Stubends
  • - SS WP316 Short Stubends Manufacturer

Equivalent Grades for Stainless Steel WP316 / 316L Stubends

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

Stainless Steel 316, 316L Butt weld Stubends Chemical Composition

Grade C Mn Si P S Cr Mo Ni Fe
SS 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
SS 316L 0.035 max 2.0 max 1.0 max 0.045 max 0.030 max 16.00 - 18.00 2.00 - 3.00 10.00 - 14.00 68.89 min

Mechanical Properties of Stainless Steel WP316 / 316L Stubends

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

Application Industries

  • Refineries
  • Petrochemicals Industry
  • Oil & Gas Industry
  • Mining
  • Construction
  • Pharmaceuticals
  • Automobile