Size range of welded cold drawn tube:
|
Size |
Min |
Max |
|
OD |
10mm |
110mm |
|
WT |
0.8mm |
5.5mm |
ID tolerance standard of welded
cold drawn tube:
|
Nominal IC(mm) |
Tolerance(μm) |
||
|
H8 |
H9 |
H10 |
|
|
>10-18 |
﹢27 |
﹢43 |
﹢70 |
|
>18-30 |
﹢33 |
﹢52 |
﹢84 |
|
>30-50 |
﹢39 |
﹢62 |
﹢100 |
|
>50-80 |
﹢46 |
﹢74 |
﹢120 |
1、 Inner surface roughness of welded cold drawn tubes can reach Ra 0.4≤μm .
2、 After straightening, the straightness of welded cold drawn tubes can reach 0.25/1000mm.
3、 Delivery length: fix length, multiple length, and length in a range etc. It’s determined according to customer’s requirements.
4、 If necessary, we can produce the pipe with other steel grades, and the requirements of product are determined by customers.
Welded cold drawn tube used in the automotive, medical equipment, fitness equipment, drum, Oil pipe, motor shell, the engine exhaust pipe.
We apply the most advanced technology to cold draw the ID scarfed ERW tube after bright annealing, pickling and phosphating as to produce welded cold drawn tube. Which enables to be used for shock absorber cylinder application as well precision structuraltubing. Delivery conditions of BKW, NBK and GBK, are the most effective processing for welded tube to be further de-seam manufactured.
