Min. Order Reference FOB Price
3000 Pieces US$0.50-15.00 / Piece
Product Description
B500 thread bar coupler for rock bolt Size: 15mm20mm 25mm 28mm 32mm 36mm 40mm 50mm OEM size can accept. Can produce the nut according customer thread bar Material:C45 and 40Cr Application: Rock bolt / soil nail ,heavy domed nut also can use to machine Company Name: Handan Yidao Metal ...