Welded Wire Mesh is a metal wire screen that is made of low carbon steel wire or stainless steel wire, which can be galvanized or PVC coated. It is available in various sizes and shapes. The Metal Mesh features smooth surface, uniform mesh, high stability and great corrosion resistance. This is why it is widely used in agricultural, industrial, transportation, such as building, mines, gardening, machine protection and other decorations.
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Permissible deviations of outer diameter and wall thickness of seamless pipes for structures
Permissible deviations of outer diameter and wall thickness of seamless pipes for structures
Steel pipe type
Steel size
Allowable deviation
Ordinary level
advanced
Hot rolled (extruded, pressed) tube
Outside diameter
D
<50
± 0.50 mm
± 0.40mm
≥50
± 1 %
± 0.75 %
Wall thickness
<4
± 12.5 %
(Minimum is ±0.40mm)
± 10 %
(Minimum is ±0.30mm)
≥4~20
+15%
-12.5%
± 10 %
>20
± 12.5%
± 10%
Cold drawn (rolled) tube
Outside diameter
6~10
± 0.20 mm
± 0.10 mm
>10~30
± 0.40 mm
± 0.20 mm
>30~50
± 0.45 mm
± 0.25 mm
>50
± 1 %
± 0.5 %
Wall thickness
≤1
± 0.15 mm
± 0.12 mm
>1~3
+ 15 %, - 10 %
± 10 %
>3
+ 12.5, - 10 %
± 10 %
Note: For thermal expansion pipes with an outside diameter of not less than 351mm, the allowable deviation is ± 18%.