Yousef Steel, a trusted name in steel manufacturing and supply located in Riyadh, Saudi Arabia, proudly presents a specialized selection of **Low Temperature Carbon Steel A420 WPL8 pipe fittings**. These fittings are expertly designed for critical applications in cryogenic and sub-zero environments. Manufactured in strict accordance with ASTM A420 standards, they find extensive use in industries such as oil and gas, LNG, petrochemicals, and refrigeration. Renowned for their outstanding performance in low temperatures, Yousef Steel’s A420 WPL8 fittings guarantee top-notch construction, precision, and dependable service even in the harshest operating conditions.
The ASTM A420 WPL8 fittings are crafted from a nickel-alloyed carbon steel, specifically engineered to provide excellent impact resistance and structural integrity at temperatures plummeting to -195°C (-320°F). Their chemical makeup typically features carbon (max 0.13%), manganese (0.90–1.60%), phosphorus (max 0.025%), sulfur (max 0.025%), and a higher nickel content (1.60–2.24%), which significantly boosts low-temperature ductility and toughness. With impressive mechanical properties, including a minimum yield strength of 275 MPa and a minimum tensile strength of 485 MPa, WPL8 is perfectly suited for extreme cold-service piping systems. These fittings also boast good weldability, making them compatible with high-integrity pressure systems.
Specifications : ASTM A420 / ASME SA420
Dimensions : ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Size : 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated)
Type : Seamless / Welded / Fabricated
Bending Radius : R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Grades : A420 WPL3 / A420 WPL8
Thickness : Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS
| Chemical Composition of ASTM A420 | ||||
|---|---|---|---|---|
| Elements | WPL6, % | WPL9, % | WPL3, % | WPL8, % |
| Carbon [C] | ≤0.30 | ≤0.20 | ≤0.20 | ≤0.13 |
| Manganese [Mn] | 0.50-1.35 | 0.40-1.06 | 0.31-0.64 | ≤0.90 |
| Phosphorus [P] | ≤0.035 | ≤0.030 | ≤0.05 | ≤0.030 |
| Sulfur [S] | ≤0.040 | ≤0.030 | ≤0.05 | ≤0.030 |
| Silicon [Si] | 0.15-0.40 | … | 0.13-0.37 | 0.13-0.37 |
| Nickel [Ni] | ≤0.40 | 1.60-2.24 | 3.2-3.8 | 8.4-9.6 |
| Chromium [Cr] | ≤0.30 | … | … | … |
| Molybdenum [Mo] | ≤0.12 | … | … | … |
| Copper [Cu] | ≤0.40 | 0.75-1.25 | … | … |
| Columbium [Cb] | ≤0.02 | … | … | … |
| Vanadium[V] | ≤0.08 | … | … | … |
| ASTM A420/ A420M | Tensile Strength, min. | Yield Strength, min. | Elongation %, min | |||
|---|---|---|---|---|---|---|
| Grade | ksi | MPa | ksi | MPa | Longitudinal | Transverse |
| WPL6 | 65-95 | 415-655 | 35 | 240 | 22 | 12 |
| WPL9 | 63-88 | 435-610 | 46 | 315 | 20 | … |
| WPL3 | 65-90 | 450-620 | 35 | 240 | 22 | 14 |
| WPL8 | 100-125 | 690-865 | 75 | 515 | 16 | … |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Low Temperature Carbon Steel A420 WPL8 pipe fittings are extensively utilized in LNG facilities, cryogenic storage systems, chemical processing plants, and liquefied gas pipelines. Their ability to maintain mechanical integrity and resist fracture in ultra-low temperatures makes them the go-to choice for engineers designing systems in arctic and offshore settings. Whether you need elbows, tees, reducers, or caps, WPL8 fittings provide long-lasting reliability and safety in applications where failure simply isn’t an option. Yousef Steel is committed to delivering quality you can trust.
Low Temperature Carbon Steel A420 WPL8 Pipe Fittings find most of their applications in systems that demand high toughness at low temperatures, i.e., cryogenic and sub-zero conditions. They are also found in petrochemical, gas processing, and LNG shipping industries, where the fittings join pipes for the transfer of fluid. The fittings are best suited for liquid nitrogen, oxygen, or other cryogenic fluid-handling systems. They are also applied in refrigerating systems, offshore platforms, and pressure vessel piping because of their strength, dependability, and resistance to low temperatures.
Yousef Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Riyadh, Saudi Arabia.
Copyright 2025 Yousef Steel. All rights reserved