API, ASTM,DIN standard carbon cylinder steel tube
Commodity Specifications:
1.Commodity name:st52 mechanical properties precision cylinder steel pipes
2.Standard:GB/T8713,GB/T3639,DIN2391,EN10305,ASTMA519,ASTMA106-2006
3.Grade: 10#(St37/St37.2/St35.8),20#(aisi1020,ck20,St42-2/St45-8/St45-4),
45#(aisi1045,ck45,ASTM A1045),st52(16Mn,Q345D),25Mn(stkm13c-t),27SiMn
4.OD:30-250mm;
5.ID tolerance:H8,H9,H10
6. Wall thickness:10%×ID
7.Surface roughness:Ra 0.02--0.4μm
8. Delivery condition:BK,BKW,BKS,GBK,NBK
9.Package: steel strip bundles, black paint coating, beveled ends or plain
10.Payment Terms: L/C or T/T(30% deposit and 70% balance against B/L copy)
11.Price Item:EXW,FOB,CFR or CIF
12.Delivery Time: Usually 15 working days after order confirmed& getting T/T deposit or original L/C
Michanical Performance
| Delivery Condition | Cold drawn+ stress-relieved(BK+S)(SR) | Cold fished (hard)(BK) |
| Steel Grade | Tensile strength (Rm Mpa) | Yield strength | Elogation A5% | Tensile strength (Rm Mpa) | Elogation A5% |
| 20# | ≥ 520
| ≥ 375 | ≥ 15 | ≥ 550 | ≥ 8 |
| 45# | ≥ 600 | ≥ 520 | ≥ 10 | ≥ 640 | ≥ 5 |
| E355(Q345B,St52) | ≥ 600 | ≥ 520 | ≥ 14 | ≥ 640 | ≥ 5 |
| 25Mn | ≥ 600 | ≥ 510 | ≥ 15 | ≥ 640 | ≥ 5 |
| 27SiMn | ≥ 800 | ≥ 610 | ≥ 10 | ≥ 800 | ≥ 5 |
ID Tolerance:
| ID size | ID deviation (mm) |
| H7 | H8 | H9 | H10 |
| 30 | +0.021 0 | +0.033 0 | +0.052 0 | +0.084 0 |
| >30~50 | +0.025 0 | +0.039 0 | +0.062 0 | +0.100 0 |
| >50~80 | +0.030 0 | +0.046 0 | +0.074 0 | +0.120 0 |
| >80~120 | +0.035 0 | +0.054 0 | +0.087 0 | +0.140 0 |
| >120~180 | +0.040 0 | +0.063 0 | +0.100 0 | +0.160 0 |
| >180~250 | +0.046 0 | +0.072 0 | +0.115 0 | +0.185 0 |
| >250~315 | +0.052 0 | +0.081 0 | +0.130 0 | +0.210 0 |
| >315~400 | +0.0527 0 | +0.089 0 | +0.140 0 | +0.230 0 |
Application:
1.Hydraulic Cylinder Tube---Used in the hydraulic cylinder of the heavy machinery, Cranes, excavator also forklifts. Material is various, mainly STKM-13CT, ST52, CK45 and 1020. We can work and get the mechanical property of the clients need and extended the life of the hydraulic cylinder.
2.SRB tube ----- Used in Elevator,buffer and Hydraulic Cylinder .This kind tube have a better roughness inner the tube, ra0.2-0.4um and can use directly in the hydraulic cylinder tube.
Range: ID 50-250mm and Length can work at most 6M.
3.Cold finished tube---- Widely Used. Processing range 30-300mm, biggest length is 11M.
Who We are ?
-------A professional steel pipes materials inventor, manufacturer and solution provider
Torich International Co.,Ltd is a professional manufacturer and exporter of steel pipes materials. It is an international marketing and sales company specialized in steel tubes, which holds the factories of Seamless Steel Tubes with Carbon and Alloy Steel Grade, Welded Precision Steel Tubes,DOM Steel Tubes, Seamless & Welded Stainless Steel Tubes with Nickel and Alloy Steel Grade.
Our factory was established since 1997, with the name of Haiyan Sanxin Steel Pipe Co., Ltd. The factories` technicians are of great engineering experience in steel pipe industry for more than 20 years, which are in great command of production technology for Cold Drawing and Cold Rolling. So we have strong technician team and manufacturing capability.
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