ZAM Alloy Coating Process Spec for PV Bracket Bolts (GB/T33430)
Hot-dip continuous coating of steel strip, post-treatment passivation and coating thickness test procedures are cited from GB/T33430 national standard for metal zinc-aluminum-magnesium alloy coating. Target M10-M16 bolt base material for distributed and coastal PV brackets, distinguish control parameters of two coating thicknesses: 85μm and 100μm. Summarize rectification plans for three mass produ
