The international standard pipe thread

　　International standard thread fittings:

　　The pipe connecting pipe is screwed into line parts. On the basis of joint measures can be divided into socket fittings, threaded pipe fittings, flanges and fittings of four kinds of thread. To make the same data as the tube. Elbow （elbow）， flange, three pipe and four pipe （crosshead） and reducer （reducer） etc Elbow for tube around the turn of the central; flange for tube and pipe interconnected parts, connected to the pipe end, three-way pipe for aggregation of the three tubes of central; four-way pipe for aggregation of four tubes of central; different diameter pipe for connecting the two different diameter tubes in central.

　　American Standard Pipe thread:

　　Seamless steel pipe manufacturing process for B16.9 ASME/ANSI factory

　　B16.11 ASME/ANSI socket welding and threaded forging pipe fittings

　　ASME/ANSI B16.28 steel butt welding of small radius elbow and back bending

　　B16.5 ASME pipe flanges and flange fittings

　　SP-43 MSS forged stainless steel butt welded pipe pieces

　　SP-83 MSS socket welding and threaded joint

　　MSS SP-97 the overall plug welding and butt welding ends, threaded sockets enhanced

　　B16.3-1998 ASME malleable cast iron threaded pipe

　　Chinese threaded fittings:

　　GB/T12459-2005 seamless steel butt welding fittings

　　GB/T13401-2005 steel plate for welded pipe parts

　　SH 3408 seamless steel butt welding fittings

　　SH 3409 steel plate system for welded pipe parts

　　SH 3410 forged steel socket welding fittings

　　Welding head of GB/T10752-1995 marine steel pipe

　　Flexible interface cast iron pipe and pipe fittings for GB/T12772-1999 drainage

　　HGJ514-87 carbon steel, low alloy steel seamless welded pipe fittings