Seamless Carbon Steel Concentric and Eccentric Pipe Reducers - China Suppliers & Factory, ASME B16.9
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
Q
What material grades are available for carbon steel pipe fittings?
Our carbon steel pipe fittings are available in ASTM A234 WPB and WPC grades, as well as ASTM A420 WPL9, WPL3, and WPL6 grades, suitable for a wide range of industrial piping applications.
Q
Which stainless steel grades do you supply?
We supply stainless steel pipe fittings conforming to ASTM A403, covering grades WP304/304L, WP316/316L, WP321, and WP347, offering excellent corrosion resistance for demanding environments.
Q
Do you offer Duplex and Super Duplex stainless steel fittings?
Yes. We provide Duplex and Super Duplex stainless steel fittings per ASTM A815, including UNS S31803, UNS S32750, and UNS S32760, which are ideal for high-strength, corrosion-resistant applications such as offshore and chemical processing.
Q
What alloy steel grades are available?
Our alloy steel fittings are manufactured to ASTM A234 standard, covering grades WP1, WP12, WP11, WP22, WP5, WP9, and WP91, which are designed for high-temperature and high-pressure service conditions.
Q
What surface treatment options are available for pipe fittings?
We offer four surface treatment options: anti-rust oil, black paint, electric galvanized, and hot-dip galvanized. Each treatment is selected based on the application environment and required level of corrosion protection.
Q
Which surface treatment is best for outdoor or high-humidity environments?
Hot-dip galvanizing provides the most robust protection against corrosion and is generally recommended for outdoor installations or environments with high humidity and exposure to moisture. Electric galvanizing is also a good option for moderate conditions.









