1. Standard:
EN10305-4 Cold drawn tubes for hydraulic and pneumatic power systems
2. Steel Grade:
E215,E235,E275,E355, other materials upon agreement with customers.
3. Production method:
Cold drawing on the seamless steel tubes, to reach high accuracy on the OD and WT tolerance,
with certain heat treatment to achieve better mechanical properties for bending and pressure purposes
4.Size range:
O.D.:5-80mm W.T.:1-15mm L:max12000mm
5. Packing:
In Hexagonal Bundles, wth anti-rust oil protection, with seaworthy packing
6.Deliver condition:
+N After the final cold drawing operation the tubes are normalized in a controlled atmosphere
Surface smoothness could be reached by EN10305-4 request Ra≤2μm, and better than standard.
Surface treatment could be:
1. Protection by phosphatization
2. Protection by galvanization, and chromatization type blue-white
3. Protection by galvanization and chromatization type yellow
4. Protection by galvanization and chromatization type olive green
