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Line Pipe

Standard of N-STEEL Line Pipe
API 5L B, B/X42/52/X60/X70/X80 PSL 1/ PSL 2
ASTM A53/ ASTM A106, B/C

Line Pipe
Specifications of Line Pipe
Pipe Types Size (mm) Permissible Deviation
Common Level High Level
Hot-rolled Pipe OD All ± 1% (Min.: ± 0.50mm ) -
Wall Thickness All ±12.5% (Min.: 0.45/ -0.40 mm ) -
Cold-drawn Pipe OD 6 ~ 10 ± 0.20 mm ± 0.15 mm
> 10 ~ 30 ± 0.40 mm ± 0.20 mm
> 30 ~ 50 ± 0.45 mm ± 0.30 mm
> 50 ± 1% ± 0.8%
Wall Thickness ≤ 1 ± 0.15 mm ± 0.12 mm
> 1 ~ 3 15% -10% 12.5% -10%
> 3 12.5% -10% ± 10%

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