Seamless Steel Pipes/Tubes/Tubing
Seamless steel pipes are used for general structure, mechanical structure, water wall panel, economizer, super heater, boiler and heat exchanger with seamless steel tubes, and for pipelines transmitting water, natural gas, and petroleum, etc. Our seamless pipes are available in various wall thicknesses and diameters. We are among the leading manufacturers and suppliers of SMLS steel pipes, tubes, or tubing in China, welcomed by customers in many countries of the world.
 
Quality Standard: 
API 5L Standard Specification for Seamless Line Pipe or Seamless Pipe Line
ASTM A 53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
ASTM A519 Seamless Carbon and Alloy Steel Mechanical Tubing 
ASTM A106 Seamless Carbon Steel Pipes for oil pipeline and gas pipeline transportation 
JIS G3441 Alloy steel tubes for machine purposes 
JIS G3444 Carbon steel pipes for general structural purposes 
JIS G3445 Carbon steel tubes for machine structural purposes 
DIN 2391 Seamless Precision Steel Tubes 
EN10305 Stainless steel pipe for precision applications. Technical delivery conditions. Seamless cold drawn tubes
EN 10210: Seamless structural steel pipes
 
Steel Grade: 
API 5L: Grade A, Grade B, X42, X46, X52, X56, X60, X65, X70, X80
ASTM A 53: Grade A, Grade B, Grade C, Type F, Type E
ASTM A519: 1010-1045, 4130-4142, 5135
JIS G3441: SCM 415 TK, SCM 418 TK, SCM 420 TK, SCM 430 TK, SCM 435 TK, SCM 440 TK 
JIS G3444: STKM 11A, STKM 12, STKM 13, STKM 14, STKM 15, STKM 16, STKM 17, STKM 18
STKM 19, STKM 20
DIN 2391: St30Si, St30A1, St35, St45, St52
EN10305: E235, E355 
EN 10210: S235JRH; S275J0H, S275J2H; S355J0H, S355J2H; S275NH, S355NH; S275NLH, S355NLH
 
Size and Specification:
Outer Diameter: 18 to 820mm
 
Wall Thickness: 2to 80mm


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