Kinds of pipes: 1 Straight-seam pipe, spiral welded pipe: Welding method: electric arc weld, ERW ( high frequency, low frequency) , gas-welding, continuous furnace welding. 1.1 Longitudinal....
Brief Description of Anshan Ying Yat To whom it .... Add: Renmin Rod.# 116, Tiexi Dist., Anshan City, Liaoning Prov., China ( 114013) ....