Seamless Steel Pipe

Huaxi Special Steel Manufacturing Co., Ltd

Products

Seamless Steel Pipe

Seamless steel pipe is produced by hot rolling, cold rolling or cold drawing. It has the characteristics of high strength, high pressure resistance and corrosion resistance. It is widely used in petroleum, chemical, machinery, electric power, aerospace and other fields.

Size Range

Outer diameter:
Hot rolled tube: Φ32mm～Φ630mm, up to Φ1200mm
Cold rolled/cold drawn tube: Φ6mm～Φ250mm

Wall thickness:
Hot rolled tube: 2.5mm～75mm.
Cold drawn tube: 0.5mm～20mm.

Length: usually 6m～12m (fixed length or multiple length).

Standard & Grade

API SPEC 5L
Product Name	Standard	Size (mm)	Grade
Line Pipe	API 5L	Ø10.3~1200 x WT1.0~120	A, B, X42, X46, X52, X60, X70, X80, PSL1 / PSL2

ASTM / ASME
Product Name	Standard	Size (mm)	Grade
Non-galvanized and hot-dip galvanized seamless steel pipes	ASTM A53	Ø10.3~1200 x WT1.0~150	Gr.A, Gr.B, Gr.C
Seamless carbon steel pipe for high temperature	ASTM A106	Ø10.3~1200 x WT1.0~150	Gr.B, Gr.C
Seamless cold drawn mild steel heat exchanger and condenser tubes	ASTM A179	Ø10.3~426 x WT1.0~36	Mild steel
Seamless carbon steel boiler tubes for high pressure mild steel	ASTM A192	Ø10.3~426 x WT1.0~36	Mild steel
Seamless cold drawn medium alloy steel heat exchanger and condenser tubes	TM A199	Ø10.3~426 x 1.0~36	T5, T22
Seamless medium carbon steel boiler and superheater tubes	ASTM A210	Ø10.3~426 x WT1.0~36	A1, C
Seamless ferritic and austenitic alloy steel boiler, superheater and heat exchanger tubes	ASTM A213	Ø10.3~426 x WT1.0~36	T5, T9, T11, T12, T22, T91
Seamless carbon steel and alloy steel for mechanical tubes	ASTM A333	Ø1/4"~42" x WT SCH20~XXS	Gr.1, Gr.3, Gr.6
Seamless and welded carbon steel and alloy steel pipes for low temperature use	ASTM A334	Ø1/4"~4" x WT SCH20~SCH80	Gr.1, Gr.6
Seamless cold drawn carbon steel feedwater heater tube	ASTM A556	Ø10.3~426 x WT1.0~36	A2, B2

DIN
Product Name	Standard	Size (mm)	Grade
High temperature seamless steel pipe	DIN 17175	Ø10~762 x WT1.0~120	St35.8, St45.8, 10CrMo910, 15Mo3, 13CrMo44, STPL340, STB410, STB510, WB36
Seamless steel pipe	DIN 1629 / DIN 2391	Ø13.5~762 x WT1.8~120	St37.0, St44.0, St52.0, St52.3
Seamless steel pipe	DIN 2440	Ø13.5~165.1 x WT1.8~4.85	St33.2
Seamless steel pipe for structure	DIN 2393	Ø16~426 x WT1.0~36	RSt34-2, RSt37-2, RSt44-2, St52

BS
Product Name	Standard	Size (mm)	Grade
Seamless steel pipe for mechanical structure	BS 970	Ø10~762 x WT1.0~120	Carbon steel
Seamless steel pipes for boilers and heat exchangers	BS 3059	Ø10~762 x WT1.0~120	360, 410, 440, 460, 490

Manufacturing Process

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