Special section tube ,special square tube,rectangular section tube,special welded pipe,spiral welded pipe ,Model:20*20mm-500mm,wall thickness 0.6mm-20mm,spiral steel pipe
model:219mm-2020mm,wall thickness 5mm-20mm. Model:4cent,6cent,1inch,1.2nch,1.5nch,2nch,2.5nch,3nch,4nch, 5nch,6nch,8nch,102,108,127,133,139,159,168,177,194,219,273,325 etc.Chinacoal05