Quality Standard: 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 transportation GB/T8162 Seamless Steel Tubes for Structural Purposes 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 Steel tubes for precision applications. Technical delivery conditions. Seamless cold drawn tubes EN 10210:Seamless structural steel pipes

Steel Grade: ASTM A 53: Grade A, Grade B, Grade C, Type F, Type E ASTM A519: 1010-1045, 4130-4142, 5135 GB/T8162: 10, 20, 35, 45, 16Mn, 12C rMo, 15CrMo, 12C rl MoV 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: Outer Diameter:8mm-110mm

Wall Thickness:1mm-14mm

Length: Random Length, Fixed Length, SRL, DRL

Heat treatment: Annealed: Bright annealed, , Spheroidize annealed Normalized, Stress relieved, Cold finished, Quenched and Tempered

Delivery Condition : BKS, NBK,BK ,BKW, GBK(+A), NBK(+N), BK(+C)