Standard EN10305-2 Material E255 High Precision Welded Steel Tube
Description:
Cold drawn welded pipe, it is the production of one of the best
choice of the multistage hydraulic cylinder tube, its process and
precision seamless steel tube cold drawing process, is to use
precision resistance welding (ERW) precision drawing, manufacturing
the EN 10305-2 eu mechanical cold drawn steel tube welding
standard.
After welding of resistance welded pipe, the overall pipe body
passes through the positive fire to ensure that the weld and heat
affected zone are in the same quality as the other parts in the
metallographic structure and mechanical properties; Cold drawing
and subsequent heat treatment (eliminating internal stress) and
steel pipe have good size and mechanical properties.
| Material: | E255 |
| Standard: | EN10305-2 |
| Delivery Condition: | +C,+LC,+SR,+N,+A |
| Size Range: | Outer Diameter:φ6-φ80
Wall Thickness: 0.5-10 |
| Application: | High Precision Steel Tube is Widely Used in Automotive Part,
Hydraulic System, High-precsion Machining. |
+C No heat treatment after the final cold drawing process
+LC After the final heat treatment there is a suitable drawing pass
+SR After the final cold drawing process there is a stress relieve
heat treatment in a controlled atmosphere
+A After the final cold drawing process the tubes are annealed in a
controlled atmosphere
+N After the final cold drawing operation the tubes are normalized
in a controlled atmosphere
Producing Process:
Produced by cold drawing over mandrel and die on the ERW welded
steel tube, to achieve better tolerance and good concentricity,
both outside and inside weld seam is completely removed during the
cold drawing process.
Advantage (compare with seamless cold drawn tube):
1.Better shape
2.Improved quality surface
3.Tight Excentricity and wall thickness tolerances
4.Good toughness at low temperature
5.USA Market: 90% of the cylinder in the USA market are produced
with welded tubes
6.Cost fix Lengths More Cheaper
Application:
High Precision Steel Tube is Widely Used in
Automotive Part,
Hydraulic System,
High-precsion Machining.
