Model Number: 100*68MM*4.5-630*178-#4719 Key Specifications/Special Features: Hot rolled steel i-beamare widely used in the construction industry and are available in a variety of standard sizesI-beam can also be used in mine road support. In order to avoid or minimize the chance of mine roadway collapsing, mine support products are necessary. And with the i-beam support, it can obviously improve the level of safety in the tunnel. The steel i-beam can be used under multiple conditions, fractured road or road with gravel, clay, silt.Use the i-beam accessories accordingly, you can get the most safe work environment in the tunnel under many circumstances ProductsSteel I beamsUsagestructure construction and electronic tower building Size 100*68*11.261kg/m -- 630*180*141.189kg/m Length 6m/12m,or cut by customer's requirements Technique Cold Drawn/Cold Rolled/Hot Rolled/forge-Can be processed again repeatedly. Inspection Third party inspection service can be offered Standard GB Grade GB9787-88 Q235B