ASTM A403 WP304L pipe fittings mean the pipe fittings which material is wrought austenitic stainless grade WP304L,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,WP304L is one of the steel grade in this standard.The corrosion resistance of 304L and 304 are similar.But after eliminate stress or welding,corrosion resistance of 304L will be more excellent.ASTM A403 WP304L is the most common stainless steel pipe fittings material (ASTM A403 WP304L Standard Specification).
ASTM A403 WP304L pipe fittings are butt welding ends,commonly used to be welded with the steel pipes of A312 TP304L material.
ASTM A403 WP304L Pipe Fitting
Chemical Composition (%) of ASTM A403 WP304L:
| Grade | C | Mn | P | S | Si |
| WP304 | 0.03 | 2.00 | 0.045 | 0.03 | 0.75 |
| Grade | Cr | Mo | Ni | ||
| WP304 | 18.00-20.00 | 8.25-10.50 | 8.00-12 |
Type of the ASTM A403 WP304L pipe fitting:
The regular products of ASTM A403 WP304L pipe fittings are elbows,tees,reducers,caps,cross.There are seamless and ERW ASTM A403 WP304L pipe fittings,the seamless ASTM A403 WP304L pipe fittings means the fittings are made from the seamless steel pipes,ERW means the fittings are made from ERW steel pipes.Welded A403 WP304L pipe fittings mean the large sizes fittings which are pieces welded from steel plates.
Manufacturing process of ASTM A403 WP304L pipe fitting:
The process of ASTM A403 WP304L pipe fitting manufacturing is called “wrought” which means it could be casted or forged.Usually the ASTM A403 WP304L 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.
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