specifications The quality of coating layer is good High precision and high corrosive resistance Stable supply capacity outer  diameter  (φ) wall thickness  tolerance(mm) wall thickness(mm) diameter tolerance (mm)   weight (g/m)   weight   Zinc(g/m) weight  PVF (g/m) resistance to pressure (Mpa) length(m/ton) 4.75(3/16″) +0.05 0.7       ±0.12 common And ± 0.08 Higher   70…

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