Cangzhou Yongwang Pipeline Manufacturing CO.,LTD manufacture Steel flange, ( WN flange, SO flange, Blind flange,) ( RF, RTJ, FF), the material mainly include A105, A105N, 304, 304L, 316, 316L and the size from 1/2"-48" 150LB, 300LB, 400LB, 600LB,900LB We offer the best quality products to you, please contact me freely.
