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BS6323-6 Cold Finished Electric Resistance Welded Steel Tubes for automotive steel tubes
BS6334-6 welded round steel tubes,welded carbon tubing,welded round carbon tubing
Standard: BS6323-6 Seamless and Welded Steel Tubes for Automobile,Mechanical and General Engineering Purposes
Part 6: Specific requirements for cold finished electric resistance welded(including induction welded) steel tubes
Steel Grade:CEW1a CEW2a CEW3a CEW4a CEW5a
Size Range:
OD: 5.0-329mm
WT:0.5-30mm
Length: max 12000mm
Method of Manufacture:
The tubes are manufactured from flat rolled strip, longitudinally welded continuously by the passage of an electric current
across the abutting edges without the addition of filler metal.
They are subsequently cold finished normally on both the inside and outside surfaces, where it is permissble to have both
an adherent layer of residual lubricant originating from the drawing process and visible traces of the internal weld upset.
If phosphate or other residues are detrimental to subsequent processing, their removal shall be the subject of an agreement
between the manufacturer and purchaser.
Delivery Condition:
The tubes are supplied in one of the following condition:
Cold finished/hard (cold finished as drawn) : BK
Cold finished/soft (lightly cold worked ): BKW
Annealed: GBK
Annealed (including de-scaling): GZF
Normalized: NBK
Normalized ( including de-scaling): NZF
It is permissible for tubes supplied in the GBK and NBK conditions to be discoloured, but they shall be free from loose scale.
Where tubes, in the GBK condition are required bright annealed, this shall be the subject of an agreement between the
purchaser and the manufactuer.
DOM(weld drawn-over-mandrel) Steel Tubing Characteristic:
Good concentricity
Good OD and ID tolerance
High Precision
Stable quality
Smooth Roughness
High Straightness
Production Processs:
Seamless tube and Cold Drawing or Cold Rolling Production
Steel Grade/Steel Material:
Thin wall steel tubes,electric motor shell,cold finished welded tubing,cold fnished DOM steel tubing.
DOM metal tubing,DOM round steel tube,cold finished precision tubing,cold finished welded tubes,
BS6323-6 DOM steel tubing,welded carbon tubing,automotive steel tubing
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Main Product:
Seamless Bearing Tubes,
Mining Drill Pipes,
Boiler Steel Tubes ,
Alloy Mechanical Tubing,
Precision Steel tubes,
Stainless Steel tubes
