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Precision Cold Drawing Seamless Automotive Oil Steel Tube
Hi,this is maria,thanks very much for your interesting to our products,If you want such steel tubes and pipes,or the standard is not listed above,pls do not hesitate to contact me at once.pls tell me,it's my honor to service you!
Tel:+86-18921988727
Zhangjiagang Huadian Import & Export Co., Ltd is a company based in China, we have two factories, one factory manufactures steel tubes and the other factory produces power station equipment.
Jiangsu Dehai Group (Parent Company) | |
Zhangjiagang Huadian Im &Ex Co., Ltd (Subsidiary) | |
Zhangjiagang Huagang IndustrialCo.,Ltd (Factory)
| Specializes in the production of cold-drawn/cold-rolled precision seamless steel tubes,such as bright oil tubes etc. |
Zhangjiagang Huadian Power Equipment Co.,Ltd (Factory) | A manufacturer of power station boiler, industrial boiler, waste heat boiler, refusefired boiler, biomass boiler and the correlated pressure parts integrating the design, manufacture, installation, repair and maintance |
These tubes are manufactured according to DIN 73000,DIN2391 and EN10305. All aspects such as mechanical properties and dimension tolerances highly conform to the requirements of diesel engine tube.
In view of oil tubes special quality requirements, we use high quality tube which is best in mechanical properties regarding elongation rate, tensile strength, especially high pressure resistance. Standard: DIN 2391, EN10305-1
Grade: ST30Al, ST35, ST37, ST45, ST52, ST52.3
Specification: 6 X 1.2 ,6 X 1.5 ,6 X 1.8 ,6 X 2 etc.
Surface: bright and smooth
Chemical composition ( cast analysis )
Grade | Steel grade | Cast analysis % | |||||
Name | Number | C | Si | Mn | P max. | S max. | |
A | St35 | 1.0308 | ≤0.18 | — | — | 0.05 | 0.05 |
St45 | 1.0408 | ≤0.25 | — | — | 0.05 | 0.05 | |
St55 | 1.0507 | ≈0.36 | — | — | 0.05 | 0.05 | |
St52 1) | 1.0831 | ≤0.20 | ≤0.55 | ≤1.5 | 0.05 | 0.05 | |
B | St35.2 | 1.0309 | ≤0.17 | ≤0.35 | ≥0.40 | 0.05 | 0.05 |
St45.2 | 1.0418 | ≤0.22 | 0.10~0.35 | ≥0.40 | 0.05 | 0.05 | |
St55.2 | 1.0509 | ≈0.36 | 0.10~0.35 | ≥0.40 | 0.05 | 0.05 | |
St52.2 | 1.0832 | ≤0.20 | 0.10~0.55 | ≤1.5 | 0.05 | 0.05 | |
1)This kind of material only suitable for the delivery condition to be BK and BKW. | |||||||
Mechanical Properties(Mpa)
| Steel grade | BKW | BK | BKS | GBK | NBK | |||||||
Tensile Streng th ReH N/mm min | Elon gati on % min | Tensile Streng th ReH N/mm min | Elon gati on % min | Tensile Streng th ReH N/mm min | Yield streng th Rm N/mm min | Elon gati on % min | Tensile Streng th ReH N/mm min | Elon gati on % min | Tensile Streng th ReH N/mm min | Yield streng th Rm
N/mm min | Elon gati on % min | |
| St35 | 480 | 6 | 420 | 10 | 420 | 315 | 14 | 315 | 25 | 340-470 | 235 | 25 |
| St45 | 580 | 5 | 520 | 8 | 520 | 375 | 12 | 390 | 21 | 440-570 | 255 | 21 |
| St52 | 640 | 4 | 580 | 7 | 580 | 420 | 10 | 490 | 22 | 490-630 | 355 | |
