Jiangsu Hongbao Group Co., Ltd.
Jiangsu Hongbao Group Co., Ltd. Manufacture since 1958
Add to Cart
EN10305 Round Precision Steel Tube , Cold Drawn Hollow Seamless Tube For Mechanical
Description:
Round precision steel tubes and cold drawn hollow seamless tubes are crucial for mechanical applications, offering high strength and durability. These tubes are manufactured through cold drawing, enhancing their dimensional accuracy and surface finish. Their seamless construction eliminates weak points, making them ideal for high-pressure environments. Commonly used in automotive, aerospace, and machinery sectors, these tubes ensure reliable performance and longevity. With exceptional mechanical properties and uniformity, they support efficient designs and contribute to the overall integrity of various engineering projects.
| Product name | EN10305 round hollow seamless mechanical cold drawn steel tube |
| Steel Grade | 45#,20#,16Mn,27SiMn, ST-52,,no-alloy steel |
| Specifications | O.D.:40-325mm(H7-H9) ,W.T.:3-30mm, L:fixed or random(1-10m) |
| Straightness | 0.5 /1000 |
| Roughness(Ra) | 0.2 to 0.4micron |
| Processing Type | cold drawn, honed |
| Marking | JW, ID, OD |
| Package | banding with steel strips, braiding parcel at outside |
| Conservation | Anti-rust oiled coating on the inside and outside of the surface, plastic caps at both ends |
| Impact test | (-20°C, 27 J, only for special requirement) |
| Length | Max 6M |
| Surface Treatment | Bared Oiled polished as clients require |
Mechanical properties at room temperature:
| Mechanical properties at room temperature | |||||||||
| Delivery Condition | BK | BKW | GBK | NBK (N) | |||||
| Steel Grade | Rm | A % | Rm | A % | Rm | A % | Rm | ReH | A % |
| Mpa (Min) | (Min) | Mpa(Min) | (Min) | Mpa(Min) | (Min) | Mpa(Min) | Mpa(Min) | (Min) | |
| E255 | 580 | 5 | 520 | 8 | 390 | 21 | 440~570 | 255 | 21 |
| E355 | 640 | 4 | 580 | 7 | 450 | 22 | 490~630 | 355 | 22 |
| E235 | 480 | 6 | 420 | 10 | 315 | 25 | 340~480 | 235 | 25 |
| E215 | 430 | 8 | 380 | 12 | 280 | 30 | 290~430 | 215 | 30 |
Delivery Condition:
1. NBK(+N)
after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium
2. GBK(+A)
after cold forming, annealing in non oxidizing medium protective gas
3. BK(+C)
the final heat treatment after cold forming, threfore small steel pipe plasticly, the plasticly degree does not guarantee
Application:
1.Fuel injection lines/nozzles for diesel or gasoline engine;
2.Compressed natured gas CNG tube
3.Drive transmission: steering column elements
4.Gear shafts, hand brake, front axles, airbag inflators, stabilizers, seat fasteners, front-wheel drive shafts
5.Mechanical structure pipe parts in automobile,motorcycles and vehicle
6.Hydraulic circuits, pneumatic lines and hydraulic suspension
7.Hydraulic cylinders
