... making hoop iron,tools and machinery parts,used for room frame structure and escalator in construction StandardAISI, ASTM, BS, DIN, ... Steel Plate, Cold Rolled Steel Plate, Mild Steel Plate, Structure Steel, difference kind of pipes, Galvanized Steel Pipe, Seamless ... and build long-term partnership! Company NameTianjin Shangyi Metal Structure Trade Co. LtdAddressA1905 of Future Plaza, No 103, ...