Manufacturer of pre-galvanized steel pipe OD:20mm-33.7mm WT:0.8mm--2.3mm Steel ... ,welding, stamping, painting, oiling, cutting, grooving, drilling, etc.Usage industryGreenhouse Pipe( can also used in Fence, Construction )PackagingBundle,bulk , in container ... .We also can provide all kinds of pipe:cold rolled,hot rolled,hot dipped,ERW pipe and so on.We sincerely hope ...