(1)Scaffolds metal beam used for inner supporting,made of cold steel ,a high grade steel . (2)Our products can replace wood timber,pilwood completely ,elastic from maxmum 4.39m to minimum 1.17m. (3)Consisting of main beam and sub beam (4)Product Specification:Metal beam includes 4 items of main beam,6 items of sub beam (5)payment terms:100% advanced payment before shipment (6)Our products are strictly under the control of ISO9001 QC system data for main & sub beam