Seamless Steel Pipe

Sizes Range: OD, 10-273mm; W.T, 1-25.4mm
Grades: Low carbon steel, alloy, etc.
Standards: ASTM/ASME, DIN, EN, BS, API, JIS, ISO, etc.

Seamless steel pipes are integral components in industries like oil and gas, petrochemicals, and construction. Manufactured without seams through a process of heating and piercing solid steel billets, these pipes offer uniform strength and structural integrity. The seamless construction eliminates weak points, making them ideal for high-pressure and extreme-temperature applications. Their versatility, corrosion resistance, and compatibility with various end connections make seamless steel pipes a preferred choice for efficient fluid and gas transportation in diverse industrial settings.

Seamless steel pipe finds extensive use across various industries due to its favorable characteristics. Some of the main applications include:

Oil and Gas Industry, Petrochemical Industry, Power Generation, Automotive Industry, Structural and Construction, Mechanical and Engineering Applications, Boiler and Heat Exchanger Tubes, Shipbuilding Industry, Mining Industry, etc.

	Standard	Standards Decription	Dimensions (mm)	Steel Grade
ASTM/ASME Standards (United States)	ASTM A53	Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless	Ø10.3~273 x WT1.0~25	Gr.A, Gr.B, Gr.C
	ASTM A106	Seamless Carbon Steel Pipe for High-Temperature Service	Ø10.3~273 x WT1.0~25	Gr.B, Gr.C
	ASTM A179	Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes	Ø10.3~273 x WT1.0~30	Low Carbon Steel
	ASTM A192	Seamless Carbon Steel Boiler Tubes for High-Pressure Service	Ø10.3~273 x WT1.0~30	Low Carbon Steel
	ASTM A199	Seamless Cold-Drawn Intermediate Alloy-Steel Heat-Exchanger and Condenser Tubes	Ø10.3~273 x 1.0~30	T5, T22
	ASTM A210	Seamless Medium-Carbon Steel Boiler and Superheater Tubes	Ø10.3~273 x WT1.0~25	A1, C
	ASTM A213	Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes	Ø10.3~273 x WT1.0~25	T5, T9, T11, T12, T22, T91
	ASTM A333	Seamless and Welded Steel Pipe for Low-Temperature Service	Ø1/4"~5" x WT SCH20~XXS	Gr.1, Gr.3, Gr.6
	ASTM A334	Seamless and Welded Carbon and Alloy-Steel Tubes for Low-Temperature Service	Ø1/4"~4" x WT SCH20~SCH80	Gr.1, Gr.6
	ASTM A556	Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes	Ø10.3~273 x WT1.0~36	A2, B2
DIN Standards (Germany)	DIN 17175	Seamless Tubes of Heat-resistant Steels - Technical Conditions of Delivery	Ø10~273 x WT1.0~20	St35.8, St45.8, 10CrMo910, 15Mo3, 13CrMo44, STPL340, STB410, STB510, WB36
	DIN 1629 / DIN 2391	Seamless Precision Steel Tubes	Ø13.5~273 x WT1.8~20	St37.0, St44.0, St52.0, St52.3
	DIN 2440	Steel Tubes - Medium Weight Suitable for Screwing	Ø13.5~165.1 x WT1.8~4.85	St33.2
	DIN 2448	Seamless steel pipes and tubes - Dimensions, Conventional masses per unit length	Ø10.3~273 x WT1.0~30	St37.0, St44.0, St52.0
EN Standards	EN 10210-1	Hot finished structural hollow sections of non-alloy and fine grain steels — Part 1: Technical delivery conditions.	Ø10.3~273 x WT1.0~30	S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355K2H
EN Standards	EN 10216-1	Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 1: Non-alloy steel tubes with specified room temperature properties.	Ø10.3~273 x WT1.0~30	P195TR1, P195TR2, P235TR1, P235TR2, P265TR1, P265TR2
BS Standards	BS 970	Seamless Steel Tubes for Machine Structure	Ø10~762 x WT1.0~120	Carbon Steel
BS Standards	BS 3059	Seamless Steel Tubes for Boiler and Heat Exchangers	Ø10~762 x WT1.0~120	360, 410, 440, 460, 490
API SPEC 5L	API 5CT	Tubing	Ø48.3~114.3 x WT3.2~16	J55, K55, N80, L80, P110
API SPEC 5L	API 5L	Line Pipes	Ø10.3~273 x WT1.0~20	A, B, X42, X46, X52, X60, X70, X80, PSL1 / PSL2
JIS Standards (Japan)	JIS G3461	Carbon Steel Tubes for Boiler and Heat Exchanger	Ø10.3~273 x WT1.0~30	STB340, STB410, STB510
	JIS G3454	Carbon steel pipes for pressure service	Ø10.3~273 x WT1.0~30	STPG 370, STPG 410
	JIS G3455	Carbon steel pipes for high-pressure service	Ø10.3~273 x WT1.0~30	STPG 370, STPG 410, STPG 480
	JIS G3456	Carbon steel pipes for high-temperature service	Ø10.3~273 x WT1.0~30	STPG 370, STPG 410, STPG 480
ISO Standards	ISO 3183	Petroleum and natural gas industries — Steel pipe for pipeline transportation systems	Ø10.3~273 x WT1.0~30	A, B, X42, X46, X52, X60, X70, X80
ISO Standards	ISO 4200	Plain end steel tubes, welded and seamless — General tables of dimensions and masses per unit length	Ø10.3~273 x WT1.0~30	Carbon Steel

Seamless Steel Pipe