This type of tube is manufactured by slitting a coil, which is then form into a round tube and welded into an ERW [Electric Resistance Welded] tube; which is then cold drawned through a die and mandrel, which controls the O.D. and I.D. of the product. This cold worked process increases mechanical properties and improves surface quality of the product.
Applicable Standards:
· ASTM A513 Type 5 DOM (Drawn Over a Mandrel)
· ASTM A513 Type 6 S.S.I.D Special Smooth Inside
Diameter
· JIS G 03445 –E-C
· EN 10305-2
Steel grades / Material:
· 1010
· 1020
1026
· ST52.3
· HSLA (High strength low alloy)