Cold Drawn ERW Welded Precision Steel Tube EN10305-2

Instruction

Welded Precision Steel Tubes EN10305-2 +C +LC +SR +A +N Precision Steel Pipe, is produced from ERW steel tube as raw material,the finished tube is also called cold drawn welded tubes,which is usually produced according to technical standard EN10305-2 E155,E195,E235,E275,E355 +C +LC +SR +A +N Cold Drawn Welded Precision Steel Tubes, is 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.
 
Welded Precision Steel Tube EN10305-2 Production Process:
Cold rolling by Cold pilger machine and Cold rolling machine
Cold drawing by cold drawn machine
Size: 20-350mm
Please specifiy the final heat treatment when sending the enquiry.
 
1. Standard:  
EN10305-2 Cold Drawn Precision Seamless Steel Pipes

2. Steel Grade:
E155,E195,E235,E275,E355,
other materials upon agreement with customers.
 
Steel Grade and Chemical Compositions:   

3. Production method:
Cold drawn on the welded steel tubes, to reach high accuracy on the OD and WT tolerance

4.Size range:
O.D.:20-350mm     W.T.:1-35mm      L:max12000mm

5. Packing:
In Hexagonal Bundles, with anti-rust oil protection, with seaworthy packing

6.Delivery condition:
1). +C No heat treatment after the final cold drawig process
2). +LC After the final heat treatment there is a suitable drawing pass
3). +SR After the final cold drawing process there is a stress relieve heat treatment in a controlled atmosphere
4). +A After the final cold drawing process the tubes are annealed in a controlled atmosphere
5). +N After the final cold drawing operation the tubes are normalized in a controlled atmosphere