Standards of seamless steel pipe

Seamless steel pipes are perforated from whole round steel, and steel pipes without welds on the surface are called seamless steel pipes. According to the production method, seamless steel pipes can be divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extruded seamless steel pipes, and top pipes.

Standards of seamless steel pipe 

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

API SPEC 5CT
Product Name	Executive Standard	Dimension (mm)	Steel Code / Steel Grade
Casing	API 5CT	Ø114~219 x WT5.2~22.2	J55, K55, N80, L80, P110
Tubing	API 5CT	Ø48.3~114.3 x WT3.2~16	J55, K55, N80, L80, P110

ASTM / ASME
Product Name	Executive Standard	Dimension (mm)	Steel Code / Steel Grade
Black and Hot-Dipped Zinc-Coated Seamless Steel Pipes	ASTM A53	Ø10.3~1200 x WT1.0~150	Gr.A, Gr.B, Gr.C
Seamless Carbon Steel Pipes for High Temperature Service	ASTM A106	Ø10.3~1200 x WT1.0~150	Gr.B, Gr.C
Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes	ASTM A179	Ø10.3~426 x WT1.0~36	Low Carbon Steel
Seamless Carbon Steel Boiler Tubes for High Pressure	ASTM A192	Ø10.3~426 x WT1.0~36	Low Carbon Steel
Seamless Cold-Drawn Intermediate Alloy Steel Heat-Exchanger and Condenser Tubes	ASTM 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 & Austenitic Alloy Steel Boiler, Superheater & Heat-Exchanger Tubes	ASTM A213	Ø10.3~426 x WT1.0~36	T5, T9, T11, T12, T22, T91
Seamless Carbon and Alloy Steel for Mechanical Tubing	ASTM A333	Ø1/4"~42" x WT SCH20~XXS	Gr.1, Gr.3, Gr.6
Seamless & Welded Carbon Steel Pipes 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 Tubes	ASTM A556	Ø10.3~426 x WT1.0~36	A2, B2

DIN
Product Name	Executive Standard	Dimension (mm)	Steel Code / Steel Grade
Seamless Steel Tubes for Elevated Temperature	DIN 17175	Ø10~762 x WT1.0~120	St35.8, St45.8, 10CrMo910, 15Mo3, 13CrMo44, STPL340, STB410, STB510, WB36
Seamless Steel Tubes	DIN 1629 / DIN 2391	Ø13.5~762 x WT1.8~120	St37.0, St44.0, St52.0, St52.3
Seamless Steel Tubes	DIN 2440	Ø13.5~165.1 x WT1.8~4.85	St33.2
Seamless Steel Pipes for Structural Purpose	DIN 2393	Ø16~426 x WT1.0~36	RSt34-2, RSt37-2, RSt44-2, St52

BS
Product Name	Executive Standard	Dimension (mm)	Steel Code / Steel Grade
Seamless Steel Tubes for Machine Structure	BS 970	Ø10~762 x WT1.0~120	Carbon Steel
Seamless Steel Tubes for Boiler and Heat Exchangers	BS 3059	Ø10~762 x WT1.0~120	360, 410, 440, 460, 490

BBN Steel provides a large, diverse inventory of seamless steel pipe in a variety of sizes to meet your application needs. With our extensive inventory of even the hardest-to-find sizes and shapes, you’re sure to find the seamless pipe your application needs.

To learn more about our seamless steel pipe, contact me today.