What is ASTM A403 WP304 steel pipe fitting?

ASTM A403 WP304 steel pipe fitting mean the pipe fitting which material is Wrought Austenitic Stainless grade A403 WP304,they are used for the pressure piping systems of moderate and high temperature services.ASTM A403 is the standard of pipe fittings material,it indicates the materials properties of different kinds of stainless steel,WP304 is one of the steel grade in this standard.304 a kind of common stainless steel,it is widely used to make for the manufacture of equipment and parts which needs good comprehensive performance,corrosion resistance and formability.In order to keep inherent corrosion resistance of stainless steel,steel must contain more than 18% chromium and more than 8% nickel.ASTM A403 WP304 is the most common stainless steel pipe fittings material.(ASTM A403 WP304 Standard Specification)
ASTM A403 WP304 steel pipe fittings are in butt welding ends,commonly used to be welded with the stainless steel pipes.

ASTM A403 WP304 Steel Pipe Fitting

Type of the ASTM A403 WP304 steel pipe fitting:

The regular products of A403 WP304 steel pipe fittings are elbows,tees,reducers,caps,cross etc.There are seamless and ERW A403 WP304 steel pipe fittings,the seamless A403 WP304 steel pipe fittings means the fittings are made from the seamless steel pipes,ERW means the fittings are made from ERW steel pipes.Welded A403 WP304 steel pipe fittings mean the large sizes fittings which are pieces welded from steel plates.

Chemical Composition (%) of ASTM A403 WP304

Grade C Mn P S Si
WP304 ≤0.08 ≤2.00 0.05 0.03 ≤1.00
Grade Cr Mo Ni
WP304 18.00-20.00 8.25-10.50 8.00-10.50 0

Manufacturing process of  ASTM A403 WP304 steel pipe fitting:

The process of ASTM A403 WP304 steel pipe fitting manufacturing is called “wrought” which means it could be casted or forged.Usually  the ASTM A403 WP304 elbows,tees,reducers  are made from steel pipes,the caps are made from plates.But the large sizes pipe fittings are commonly manufactured in pieces and welded together.
Hebei Haihao Group has more than 30 years experiences in ASTM A403 WP304 pipe fittings manufacturing,we can supply all the range of the fittings of high quality and soon delivery.