The crane is composed of metal structural parts, machining parts, purchased parts and outsourcing parts Its whole process of crane includes incoming material inspection, which mainly tests its chemical composition and mechanical properties,pretreatment,primer spray,marking off,Cutting stock,Sheet metal splicing,automatic submerged arc welding,crack detection,Sheet leveling,Second line blanking,The assembly,welding,ultrasonic examination,structure parameter,assembly,Final assembly,inspection.
