трек болт

track bolt Standards: JIS, ANSI, ASTM, DIN, BS, GB Specification: M20-M48 Surface finish:zinc plated, HDG, black,plain materials:40Cr,38Crmo-42Crmo etc. Hardness grade: 8.8s,10.9s ,12.9s Used for steel construction projects, such as the boiler steel construction of power stations, port machinery, metallurgical construction, airport hangar, large span bridge of the railway and highway, large scale industry factory building, skyscraper, exhibition hall and large-scale gymnasiums and stadiums We have many items of the high strength for steel structuresBolts with different materials and size etc. to be chosen according to buyers' requirements .We can provide you good service and high quality products.OEM is welcomed if needed. For more information welcome to contact with us!