top quality seamless steel pipe/steel tube
Product Description
OD:15-110mm,WT:1-12mm
Length:5-12m random or be fixed as customers' requests DIN2391-81 seamless precision steel tubes Field of application This standard defines the technical delivery conditions for seamless precision steel tubes according to DIN 2391 which are made from the steel grades listed.Tubes according to this standard are mainly used where accuracy to dimension and,possibly,small wall thicknesses and good surface condition are required. Chemical composition(%)
Grade | Mfg. Process
| Chemical composition(%) | ||||||||
C | Si | Mn | P | S | Ni | Cr | Mo | Others | ||
St30Si | S | 0.10Max | 0.30Max | 0.55Max | 0.04Max | 0.04Max | - | - | - | - |
St30A1 | S | 0.10Max | 0.05Max | 0.55Max | 0.04Max | 0.04Max | - | - | - | Al deoxydized |
St35 | S | 0.17Max | 0.35Max | 0.40Max | 0.05Max | 0.05Max | - | - | - | - |
St45 | S | 0.21Max | 0.35Max | 0.40Max | 0.05Max | 0.05Max | - | - | - | - |
St52 | S | 0.22Max | 0.55Max | 1.60Max | 0.05Max | 0.05Max | - | - | - | - |
EN 10210:Seamless structural steel pipes
Product Name | Executive Standard | Specification Range (mm) | Steel Grade |
Cold drawn seamless precision tube | DIN2391 | 15-110mm | ST35,ST37.4,ST44, ST45,ST52 |
NAME | Scope (mm) | DIN series(mm) |
Out Diameter | 3-30 | ±0.08 |
31-40 | ±0.15 | |
41-50 | ±0.20 | |
51-60 | ±0.25 | |
Wall Thickness | 1-14 | ±10% |
Standard | Steel Grade | Mechanical Performance | ||||
GBK(+A) | NBK(+N) | |||||
Tensile Strength (Rm mpa) | Elongation rate (A5 %) | Tensile Strength (Rm mpa) | Yield Strength (Reh mpa) | Elongation rate (A5 %) | ||
DIN 2391 | St35 | ≥315 | ≥25 | 346-478 | ≥235 | ≥25 |
St37 | ≥315 | ≥25 | 346-478 | ≥235 | ≥25 | |
St37.4 | ≥315 | ≥25 | 346-478 | ≥235 | ≥25 | |
St45 | ≥390 | ≥21 | 440-570 | ≥255 | ≥21 | |
St44 | ≥390 | ≥21 | 440-570 | ≥255 | ≥21 | |
St52 | ≥490 | ≥22 | 490-630 | ≥355 | ≥22 |
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 Product Overviews
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