Pipe Fittings & Accessories

We classify steel pipe fittings into different types from different sides:

• According to different body materials for industrial pipelines, as follows:
• Stainless steel pipe fittings.
• Carbon steel pipe fittings (Black steel pipe fittings).
• Alloy steel pipe fittings.

• According to different coatings, as follows:
• Black painted.
• PE coated.
• Cladding stainless steel or alloy steel.
• Galvanized steel pipe fittings (zinc coated).

• According to different industrial purposes, as follows:
• Oil and gas pipelines.
• Chemical plants.
• Food industry.
• Power stations.
• Fire sprinkler pipe fittings.

• According to different connection types, as follows:
• Butt weld fittings.
• Socket weld fittings.
• Threaded fittings.
• Flanged fittings.

When you place an order or make an inquiry, the sample description will be like “90-degree stainless steel elbow long radius”, “carbon steel equal tee / reducing tee”, added with specific standards, diameters, and wall thickness class, then we will know what exactly you are looking for.

Stainless steel pipe fittings are usually used for corrosive environments, to protect against pipelines from acid corrosion, for industrial purposes the main standard is ASTM A403, this specification includes wrought stainless steel fittings for pressure pipelines. There are several grades under this standard but most used are A403 WP 304, 304L, or 316 and 316L.

Galvanized steel pipe fitting includes malleable cast iron pipe fittings (lower pressure for plumbing) and carbon steel pipe fittings (for higher pressure), these two types have a big difference and for different usage.

On the other hand, there are cold galvanized and hot dipped galvanized, butt weld pipe fittings usually apply hot galvanized.

For butt weld fittings sizes available in 1/2”, 1”, 2”, 3”, 4”, 6”, 8”, 10”, 12”, 16”, 20” to 48”.

For socket weld and threaded pipe fittings sizes in 1/2”, 1”, 1/2”, 2”, and up to 4”.

Thickness for butt weld fittings: SCH 5, SCH 10, SCH 40, SCH STD, SCH 80, SCH XS, SCH 160, and SCH XXS, etc. (Schedule 40 steel pipe fittings, and Schedule 80 pipe fittings are mostly used).

Pressure class for socket weld fittings: 3000#, 6000#, 9000#; For threaded pipe fittings pressure ranges in 2000#, 3000# and 6000#.

(Flanges and gasket thickness are usually described as from 150#, 300#, 600#, and up to 2500#. This is different from butt weld fittings but similar to socket weld fittings).