... .Hot Dipped Galvanized Steel Pipe 2. Size:14580*0.12-2*6000mm 3. Zinc coat: Z60,Z80,Z120,Z180 1.Hot Dipped Galvanized ... JIS G3302 GB/T-12754-20065. Application of Hot Dipped Galvanized Steel Pipe ConstructionOutside: Workshop, agricultural warehouse, residential precast unit, ... corrugated roof, roller shutter door, rainwater drainage pipe, retailer boothInside: Door, door case, light steel roof ...