china manufacturer /supplier for H steel column

Welding H-beam, has H section, be welded together by steel strip, there are submerged arc welded H-beam & high-frequency welded H-beam. Submerged arc welded H-beam technology: steel plate - automatic strip - automatic submerged arc welding - flaw detection - flange correction - web correction - end processing - sand blasting - paint. The Automatic submerged arc welding production line from the material, assemble, welding all controlled by the computer to ensure that the accuracy of H-beam production, weld quality meet the national standards.