China best A105 Half/Full Coupling Sw (3000#-9000#)

Product Description A105 Half/Full Coupling Sw (3000#-9000#)   Product Description   1.Connect type: welded. threaded(NPT,BSPT). BW.SW 2.Process: free forging, plate cutting .forged 3.Printing: Carbon steel and alloy steel with yellow print, black print, oil or zinc...