Hot Products
China Suppliers Factory ASME B16.9 Seamless Carbon Steel Sch 40 Butt-welding Elbow for Pipeline Systems
Material Grade
⬡
Carbon Steel
ASTM A234 WPB, WPC | ASTM A420 WPL9, WPL3, WPL6
◈
Stainless Steel
ASTM A403 WP304/304L, WP316/316L, WP321, WP347
⬟
Alloy Steel
ASTM A234 WP1, WP12, WP11, WP22, WP5, WP9, WP91 | Duplex & Super Duplex Stainless Steel | ASTM A815 UNS S31803, UNS S32750, UNS S32760
Surface Treatment
- Anti-rust Oil
- Black Paint
- Electric Galvanized
- Hot-dip Galvanized
Frequently Asked Questions
What material grades are available for pipe fittings?
We offer pipe fittings in 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, WP11, WP22, WP91, etc.), as well as Duplex and Super Duplex Stainless Steel grades.
What is the difference between WPB and WPC carbon steel?
Both WPB and WPC are carbon steel grades under ASTM A234. WPB is the most commonly used grade for standard pressure and temperature applications, while WPC has higher tensile and yield strength requirements, making it suitable for more demanding service conditions.
What surface treatments are offered for pipe fittings?
We provide four 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.
What is the advantage of hot-dip galvanizing over electric galvanizing?
Hot-dip galvanizing provides a thicker and more durable zinc coating compared to electric galvanizing, offering superior corrosion resistance especially in outdoor or harsh environments. Electric galvanizing produces a thinner, more uniform coating and is typically used for applications requiring a smoother surface finish.
Are Duplex and Super Duplex stainless steel fittings available?
Yes, we supply Duplex and Super Duplex stainless steel fittings conforming to ASTM A815, including UNS S31803 (Duplex), UNS S32750, and UNS S32760 (Super Duplex). These grades offer excellent resistance to pitting, crevice corrosion, and stress corrosion cracking.
Which stainless steel grade is recommended for high-temperature applications?
For high-temperature service, ASTM A403 WP321 and WP347 stainless steel grades are commonly recommended. WP321 contains titanium stabilizers to prevent sensitization, while WP347 uses niobium/columbium stabilization, both providing excellent performance at elevated temperatures.