When we talk about the material of butt welding steel pipe fittings, we talk the material steel grade , for example, ASTM A234 WPB or A403 WP316L.
It is the material information of this fitting , not the raw material steel grade for fittings production . A butt welding steel elbow, 6″ SCH40, the material is ASTM A234 WPB, as we know, it is produced from a steel pipes. The raw material is a steel pipe, the steel grade may be ASTM A106 Gr.B , or A53 GR.B , not the pipe of A234 WPB .
Before the production of an steel pipe fitting of a specific material , we should confirm the raw materia steel grade first , make sure the fittings from this raw material is absolutely as per the fittings materail technical requirements, such as the Chemical composition, Mechanical property, or the heat treatment data .
Hebei haihao pipe fitting manufacture departments and technical engineers have rich experiments in the pipe fittings production . When we produce a new standard of steel fittings, we should check and confirm the raw material data carefully, and we will do experiments to test, finally we will do the finish products review and proof test. Then we can approve this pipe fittings materials and production process. Different kinds of pipe fittings standards have different technical requirements , we have professional skills in the pipe fitting production and development . With this , we have confidence to serve our clients from different industry fields.