Progress of HFW Pipe Manufacturing Technology

Briefly reviewed in the paper is the level of the HFW technology and relevant measures as taken for control of the welding quality.Also elaborated here are progress of the HFW technology and typical methods for control thereof，including technique for control of welding output power，technique for control of weld temperature consistency，the welding process aiming at enhancing weld toughness，and the gas shielding process aiming at controlling the welding oxides.Thanks to perfect technical measures，it is possible to realize the intelligent manufacture and product upgrade of the HFW pipe.