[Class : 37] Services Rendered For Installation, Repair And Retrofitting Of, Structural Bridge Bearings, Bridge Components, Expansion Joints, Material Handling Equipment Equipments Like Electrically Operated Railway Traverser, Transfer Cars With Or Without Tilter, High Lift Electromechanical Synchronous Jack, Multipurpose Power Winch, Haulage System, Push Bar Conveyor, Trestle Conveyor, Jib Crane, Wagon Spotter Etc., Construction Equipments Like Self Erecting Piling Rigs With Or Without Augering And Under Reaming Arrangement, Earth Cutting & Dredging Grabs, Heavy Duty Bridge Erection Crane, Launching Girders Etc. , Miscellaneous And Various Equipment For Process Plants; Construction Of Steel Fabrications.