EC21 Buying Leads Catalogs - h beam welding http://importer.ec21.com/buy_leads/h beam welding.html Buy Welded H Beam Line with Variable Cross-sectionhttp://www.ec21.com/offer_detail/Buy_Welded_H_Beam_Line--3263480.htmlwelded flange H beams of variable cross-section Parameter Value Main beam parameters 1. Beam height, (H), mm 300-1500 220080419