COlD DRAWN TUBES:
These products are Manufactured by cold drawing of seamless and welded fully killed steel tubes.This Particular process assures a high dimensionals precision,while different kind of following heat treatments are used to reach different levels in mechanical properties.
The different kinds of cold drawn tubes ready on stock cover a wide range of applications :
COLD DRAWN SEAMLESS AND WELDED TUBES SUITABLE FOR HONING
COLD DRAWN SEAMLESS AND WELDED TUBES INSIDE H8
COLD DRAWN SEAMLESS TUBES FOR SHAFTS
WELDED SMOOTH BORE CYLINDER TUBES INSIDE H9 OR H10.
COLD DRAWN SEAMLESS TUBES FOR HYDRAULIC AND PNEUMATIC POWER SYSTEMS.
STEELGRADES AND DELIVERY CONDITIONS
( Cacc.EN10305/BK acc.DIN2391)
No heat treatment after final cold drawing.
( LC acc.EN10305/BKWacc.DIN2391)
The final heat treatment is followed by a suitable drawing pass
(limited reduction of area)
( SRacc.EN10305/BK Sacc.DIN2391
After the final cold drawing process,tubes are stress relieved in controlled atomosphere in order to reduce work hardening due to the cold forming process.
After final cold drawing process,tubes are annealed in controlled atomosphere.