ERW Steel Tube
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The outside diameter tolerances shall be as follows,Pipe Body
For Size
Tolerance
48.3 mm and less
+0.40 mm -0.80 mm
60.3 mm and above
+/-1%
B. Wall Thickness
The Tolerances on the wallshall be as follows :
thickness of line pipes
Type
For
Tolerance
Pipes
73.0 mm and smaller
+20.0%-12.5%
88.9 mm O.D. & Larger
+18.0%-12.5%
C.Weight
Single Lengths,Standard Weight, regular weight, extra strong and double extra strong pipe
Grade YST - 210 and YST - 240
+10.0%-3.5%
Grade YST -170
+10.0%-5.0%
Car loads lots For min 18000 Kg : Grade YST 210 & YST 240 GRADE YST 170
-1.75%-2.5%
...more