Low Cost Pre-engineered H Beam Metal Structure Steel q345 h beam pre engineered steel
column and beam. material q345 H section steel ( painted or galvanized) wall&roof purlin. c or z section steel, size from c120~C320, z100~Z200. wall&roof panel . colorful corrugated steel sheet ,s andwich panels with eps, rockwool, fiber glass, pu etc. supporting. steel angle, steel pipe, steel round. gutter. steel sheet or galvanized steel sheet. rainspout. pvc pipe
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1 5mm thickness iron steel sheet price specification