LONGITUDINAL SAW PIPES

High quality plates are procured from well –known local manufactures like Steel Authority of India, Essar Steel , Tata Steel, or are imported from leading steel mills abroad. Physical and chemical properties are checked in the laboratory and verified with the test certificates. Plates are cut to required dimensions, edges prepared as per manufacturing codes, and fed into the rolling machine. The plates are rolled into cylindrical shape of lengths varying from 4-12 mtrs. After post pinch operation, pipes are subjected to fit up & Tack welding by Mig Process for onward root run by MIG Process to provide back up for SAW. The longitudinal seam is submerged arc welded both from outside and inside, to form a strong weld joint followed by set Parameters of current & Voltage and monitored closely to ensure quality by the QA/QC Engineer. Pipes are then moved to gauging station to achieve perfect roundness with a Hydraulically operated Press (Machine) to achieve the Perfect Profile. Pipe ends are beveled wherever required by the customer. Each pipe is subjected to strict quality control. Pipes also undergo ultrasonic testing apart from radiography and hydrostatic testing as per the relevant codes and specifications. Each pipe bears Sr.No., Specification, Size, Heat Number etc. for traceability.