Seamless Carbon Steel Pipe Reducer Suppliers in China - Concentric & Eccentric 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 for pipe fittings?
We supply stainless steel pipe fittings in ASTM A403 grades including WP304, WP304L, WP316, WP316L, WP321, and WP347, covering standard and low-carbon variants for corrosion-sensitive environments.
Q
Do you offer Duplex and Super Duplex stainless steel fittings?
Yes. We provide Duplex and Super Duplex stainless steel fittings conforming to ASTM A815, including UNS S31803 (Duplex 2205), UNS S32750 (Super Duplex 2507), and UNS S32760, ideal for highly corrosive and high-pressure service conditions.
Q
What alloy steel grades are available?
Our alloy steel pipe fittings are manufactured to ASTM A234 in grades WP1, WP12, WP11, WP22, WP5, WP9, and WP91, designed for high-temperature and high-pressure piping systems in power generation and petrochemical industries.
Q
What surface treatment options are available for pipe fittings?
We offer four standard surface treatment options: anti-rust oil, black paint, electric galvanized, and hot-dip galvanized. These treatments help protect the fittings from corrosion during storage, transportation, and installation.
Q
Which surface treatment is recommended for outdoor or harsh environments?
Hot-dip galvanizing is generally recommended for outdoor or harsh environments due to its thicker zinc coating and superior long-term corrosion resistance compared to electric galvanizing or anti-rust oil treatments.









