What is ASTM A403 WP304H pipe fitting?
ASTM A403 WP304H pipe fitting mean the pipe fitting which material is wrought austenitic stainless and grade is ASTM A403 WP304H.This material has a high carbon content in chemical compositions.It is used for the pressure piping systems of moderate and high temperature services.WP304H is a kind of heat and corrosion resistant steel. It has a good pipe bending, welding performance, heat and corrosion resistance, high rupture strength and stability, also the cold deformation ability is very good. It could be used up to 650°C, oxidation temperature up to 850°C.
ASTM A403 WP304H pipe fittings are butt welding ends,commonly used to be welded with the steel pipes of ASTM A312,A182 or A403 material,or other equivalent material.
Chemical Composition (%) of ASTM A403 WP304H:
| Grade | C | Mn | P | S | Si |
| WP304H | 0.04-0.10 | 2.00 | 0.045 | 0.03 | 0.75 |
| Grade | Cr | Mo | Ni | ||
| WP304H | 18.00-20.00 | 8.25-10.50 | 8.00-10.50 |
Type of the ASTM A403 WP304H pipe fitting:
The regular products of A403 WP304H pipe fittings are elbows,tees,reducers,aps,cross.There are seamless and ERW A403 WP304H pipe fittings,the seamless A403 WP304H pipe fittings means the fittings are made from the seamless steel pipes,ERW means the fittings are made from ERW steel pipes.Welded A403 WP304H pipe fittings mean the large sizes fittings which are pieces welded from steel plates.
Manufacturing process of ASTM A403 WP304H pipe fitting:
The process of A403 WP304H pipe fitting manufacturing is called “wrought” which means it could be casted or forged.Usually the ASTM A403 WP304H 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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