Min. Order Reference FOB Price
1 Piece US$2.00 / Piece
Product Description
We are one leading producer of AISI 4140(42CrMo4,SAE 4140H,1.7225)Forged Forging DTH Hammer Drilling Bits Button Bits Shank Borewell Bits Body Bodies Heads from china Heat treatment: Normalized / Annealed / Quenched / tempered ...