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Seamless steel pipes are used in a range of applications in all different industries, including petrochemical, environmental, energy, fluid water, building and more. We can help you with the right products for your unique application. Chemical CompositionStandard & Material Carbon Steel ASTM A519 Standard MT1010, MT1020, 1008, 1010, 1018, 1020, 1025, 1030, 1045, 1518 JIS G3445 Standard STKM11A STKM12A STKM12B STKM12C STKM13A STKM13B STKM13C STKM14A STKM14B STKM14C STKM15A STKM15C STKM16A STKM16C STKM17A STKM17C STKM18A STKM18B STKM18C STKM19A STKM19C STKM20A JIS G3473 Standard STC370, STC440, STC510A, STC510, STC540, STC590A, STC590B DIN 2391 Standard St 35, St45, St52 EN 10297-1 Standard E235, E275, E315, E355, E470 EN 10305-1 Standard E215, E235, E355 EN 10305-4 Standard E215, E235, E355 BS 6323-3 Standard HFS 3, HFS 4, HFS 5, HFS 8 NF A49-311 TU 37-b, TU 52-b, TU 56-b, TU XC35 Alloy Steel ASTM A519 Standard 1345, 3140, 4130, 4135, 4140, 4150, 4320, 4340, 5120, 5130 JIS G3429 Standard STH11, 12 STH21, 122 STH31 JIS G3441 Standard SCR420TK, SCM415TK, SCM418TK, SCM420TK, SCM430TK, SCM440TK Stainless Steel ASTM A511 Standard MT304, MT304L, MT310S, MT316, MT316L, MT317, MT321, MT347, MT403, MT410, MT431 ISO Standard NACE MR-0175
SizeSize Range Tolerance OD 6-325mm -0.035 -- +0.045mm ID 2-250mm ±0.035mm WT 1-32mm depends on sizes Length random or fixed length +0-3.5mm Straightness 0.15:1000, 0.4:1000, 0.5:1000 1:1000 or customized Surface Roughness Ra 0.02-0.4μm Steel Grade C(%) Si(%) Mn(%) P(%) S(%) Nb/V(%) STKM11A ≤0.12 ≤0.35 ≤0.60 ≤0.040 ≤0.040 - STKM12A ≤0.20 ≤0.35 ≤0.60 ≤0.040 ≤0.040 - STKM12B ≤0.20 ≤0.35 ≤0.60 ≤0.040 ≤0.040 - STKM12C ≤0.20 ≤0.35 ≤0.60 ≤0.040 ≤0.040 - STKM13A ≤0.25 ≤0.35 0.30~0.90 ≤0.040 ≤0.040 - STKM13B ≤0.25 ≤0.35 0.30~0.90 ≤0.040 ≤0.040 - STKM13C ≤0.25 ≤0.35 0.30~0.90 ≤0.040 ≤0.040 - STKM14A ≤0.30 ≤0.35 0.30~1.00 ≤0.040 ≤0.040 - STKM14B ≤0.30 ≤0.35 0.30~1.00 ≤0.040 ≤0.040 - STKM14C ≤0.30 ≤0.35 0.30~1.00 ≤0.040 ≤0.040 - STKM15A 0.25~0.35 ≤0.35 0.30~1.00 ≤0.040 ≤0.040 - STKM15C 0.25~0.35 ≤0.35 0.30~1.00 ≤0.040 ≤0.040 -
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