large scale of steel structure workshop Steel Structure Workshop/plant material: C purlin ,H beam ,sandwich panel (EPS PU ... roc large scale of steel structure workshopSteel Structure Workshop/plant material: C purlin ,H beam ,sandwich panel (EPS PU ... rocwool) certificate: ISO 9001, ISO 9004 Name Steel structure warehouse/plant TypeSingle slope, double slope, multi -slopeSingle span, double span, ...