A403 is ASTM standard for forged austenitic stainless steel pipe fittings. WP304 is a kind of material in ASTM A403 standard. In ASTM A403 standard, according to the size and pressure grade of ASME or MSS standard, the grade of stainless steel pipe parts is expressed with prefix WP or CR.

The ASTM standard specifies the specific manufacturing process and precise chemical composition requirements for steel pipes, fittings and flanges, including the content percentage of carbon, manganese, nickel and other chemical elements. Materials are distinguished by steel grades.

ANSI is the American National Standards Institute. ANSI standards are compiled in the following three ways:1. The relevant organization shall be responsible for drafting, invite experts or professional group to vote, and submit the results to the standard review committee by ANSI for consideration

Why Calculate Weight of Lap Joint Stub End?The calculator weight is used to choose the package and transportation method, beause Lap joint stub end is usually in small demands. It is generally a section of the lap joint flange.The stainless steel stub end is matched with the galvanized carbon steel

What is a BW cross pipe?A cross is also called four-way fitting that used to make three 90 degree branchesfrom the main run pipeline.Depending on the way it connect，they can separated into butt welding（BW）, socket welding(SW) and threaded cross(TRD).Among themBW cross is frequently used.Usually we c

Shanghai Zhucheng is a manufacturer in china who supplies and export ASTM A105/A105N material specification forged steel fittings in types of threaded pipe fittings & socket weld fittings. Both of them are available in size from 1/8" to 4".