& 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  | |||
 
 Size  | 
  | Size 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  | |||





Production Process
Tube Inspections


Packing & Delivery