Pipe classification
1. Classified by production method
(1) Seamless pipe - hot rolled pipe, cold rolled pipe, cold drawn pipe, extruded pipe, top pipe
(2) welded pipe
(a) by process - arc welded pipe, electric resistance welded pipe (high frequency, low frequency), gas welded pipe, furnace welded pipe
(b) According to the weld seam - straight seam welded pipe, spiral welded pipe
2, according to the shape of the section
(1) Simple section steel pipe - round steel pipe, square steel pipe, elliptical steel pipe, triangular steel pipe, hexagonal steel pipe, diamond steel pipe, octagonal steel pipe, semicircular steel circle, Other
(2) Complex section steel pipe—unequal hexagonal steel pipe, five-petal plum-shaped steel pipe, double convex steel pipe, double concave steel pipe, melon-shaped steel pipe, conical steel pipe, corrugated steel pipe, case steel pipe, others
3, according to wall thickness classification - thin-walled steel pipe, thick-walled steel pipe
4, according to caliber classification - large diameter seamless steel pipe, small diameter seamless steel pipe
5. Classification by use - steel pipe for pipeline, steel pipe for thermal equipment, steel pipe for machinery industry, petroleum, geological drilling steel pipe, container steel pipe, chemical industry steel pipe, special purpose steel pipe, others
A Stud is a type of fastener that has no head, but only external threads on both ends. When connecting, one end of it must be screwed into the part with internal threaded hole, the other end through the part with a through hole, and then screwed on the nut, even if the two parts are fastened into a whole. This type of connection is called a stud connection and is also a removable connection. It is mainly used in cases where one of the connected parts has a large thickness, requires a compact structure, or is not suitable for bolting because of frequent disassembly.
Timberlok Screws,Pan Head Wood Screws ,Metric Set Screws,Hex Head Set Screw
Kunshan Zhonggu Precision Hardware Co., Ltd. , https://www.zgfastener.com