Steel pipe classification

- Feb 16, 2019-

By manufacturing process

(1) the manufacturing process of seamless steel tubes can be divided into the following basic categories: hot rolling (extrusion), cold rolling (drawing), and hot expanding steel tubes.

(2) according to the manufacturing process, welded pipes can be divided into: straight welded pipe, spiral welded pipe, coil welded pipe, welded pipe thermal expansion pipe.

By shape

Steel pipe can be divided into: round pipe, square pipe, rectangular pipe, octagonal pipe, hexagonal pipe, D pipe, pentagonal pipe and other special-shaped steel pipe, complex section steel pipe, double concave steel pipe, five-petal plum shaped steel pipe, conical steel pipe, corrugated steel pipe, melon shaped pipe, double convex steel pipe and so on.

By use

Steel pipe can be divided into pipe for pipeline, pipe for thermal equipment, pipe for mechanical industry, pipe for petroleum, pipe for geological drilling, pipe for container, pipe for chemical industry, pipe for special purpose, etc.

Cangzhou Steel Pipe Group (CSPG) Co., Ltd. is a large-sized, key metallurgic enterprise of Hebei Province in North China, whose history dates back to 1994. CSPG currently em/paces six member companies with products varying from SSAW, LSAW, ERW, seamless steel pipes to 3PE pipes, galvanized pipes, casing pipes, etc. A Joint-stock corporation, CSPG occupies an area of 600,000 square meters with a total asset of $530 million.

Specialized in the production of straight welded pipe spiral pipe galvanized pipe 3PE/3PP/FBE/TPEP internal and external epoxy powder internal and external epoxy resin cement mortar two cloth three oil buried pipeline IPN8710 non-toxic drinking water internal and external plastic coated lining plastic and other anti-corrosion pipe fittings for oil and gas pipeline water conservancy projects

Executive standard :DIN30670 DIN30678 CSA Z245 AFNOR nf49-710/711 NACE rp0394/0490 AWWAC 210/C213GB/T9711 API 5L ISO 3183Material: Q235B/Q355BGR A GR B x42-x80 l245-l555


Business scope: 21.3mm-3620mmLSAW submerged arc welded pipe 325-2020mmERW straight welded pipe 6mm-711mmSMLS seamless tube 10-1120mmSSAW spiral steel tube 219-3620mmDemand for quality suppliers and partners

Surface treatment

External coating:  Anti-corrosion black or Varnish painting, epoxy coal tar enamel,  glass fiber 

cloth , Insulation Coating 3PE, 3PP, FBE, Polyurethane and so on

Internal lining: Epoxy , cement motar,  and according to customers requirement 

API 5L spiral welded steel pipe SSAW pipe

End treatment

Plain end/ bevel end/flanged 

API 5L spiral welded steel pipe SSAW pipe