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…