... Capillary connecting, Assembly welding, Leakage Test, Cleaning and drying, Coating, Curing, Inspection, Packing Technical Standards 1) Size: width 590 mm ... 0.5mm Specification of coating Coating thickness thickness of coating40 ~ 90 μ m Hardness of coating ≥2H Impact of coating 50cm ?kg/cm ... impact, no crack Adhesion of coating ≥two grade Flexibility of coating Around R=3D bend 180?, no crack ...