Forged Socket Weld and Threaded Pipe Cap for Pipe Ends - China Suppliers and Factory Direct Products
ASTM A234 WPB, WPC | ASTM A420 WPL9, WPL3, WPL6
ASTM A403 WP304/304L, WP316/316L, WP321, WP347
ASTM A234 WP1, WP12, WP11, WP22, WP5, WP9, WP91 | Duplex & Super Duplex Stainless Steel | ASTM A815 UNS S31803, UNS S32750, UNS S32760
- Anti-rust Oil
- Black Paint
- Electric Galvanized
- Hot-dip Galvanized
- 3LPE
- 3LPP
ASTM A234 WPB and WPC are both carbon steel pipe fittings. WPC has higher tensile and yield strength requirements compared to WPB, making it suitable for more demanding pressure applications.
WP304L is a low-carbon version of WP304. The reduced carbon content minimizes carbide precipitation during welding, improving corrosion resistance in welded joints and high-temperature environments.
Duplex (UNS S31803) and Super Duplex (UNS S32750, UNS S32760) stainless steels offer superior corrosion resistance and high strength, making them ideal for offshore, chemical processing, and seawater handling applications.
Hot-dip galvanizing and 3LPE/3LPP coatings provide the highest level of corrosion protection. Hot-dip galvanizing is widely used for structural applications, while 3LPE/3LPP is preferred for buried or subsea pipelines.
3LPE (Three-Layer Polyethylene) is suitable for operating temperatures up to approximately 80°C, while 3LPP (Three-Layer Polypropylene) can withstand higher temperatures up to around 140°C, making it better for high-temperature pipeline systems.
Yes. Alloy steel grades such as ASTM A234 WP11, WP22, and WP91 are specifically designed for high-temperature and high-pressure service, commonly used in power generation, petrochemical, and refinery industries.