China Suppliers Factory ASME B16.9 Seamless Carbon Steel Sch 40 Butt-welding Elbow for Pipeline Systems

We offer a wide range of material grades including Carbon Steel (ASTM A234 WPB, WPC, ASTM A420 WPL9/WPL3/WPL6), Stainless Steel (ASTM A403 WP304/304L, WP316/316L, WP321, WP347), and Alloy Steel (ASTM A234 WP1 through WP91), as well as Duplex and Super Duplex Stainless Steel.

Both WPB and WPC are carbon steel grades per ASTM A234. WPC has a slightly higher tensile strength requirement compared to WPB, making it suitable for applications requiring greater mechanical performance.

We provide four standard surface treatment options: anti-rust oil, black paint, electric galvanized, and hot-dip galvanized. Each treatment offers different levels of corrosion protection to suit various environmental and application requirements.

Duplex (UNS S31803) and Super Duplex (UNS S32750, UNS S32760) stainless steels offer superior corrosion resistance, higher strength, and excellent resistance to stress corrosion cracking compared to standard austenitic stainless steels, making them ideal for demanding environments such as offshore and chemical processing.

Hot-dip galvanizing provides the most robust corrosion protection for outdoor or high-humidity environments. It creates a thick, durable zinc coating that significantly extends the service life of the pipe fittings compared to other surface treatments.

Yes. Certain grades such as ASTM A420 WPL3, WPL6, and WPL9 are specifically designed for low-temperature service. Stainless steel grades like WP304/304L and WP316/316L also maintain excellent toughness and ductility at cryogenic temperatures.