Shanxi Jianlong successfully develops American Standard boron-containing cold heading steel 10B21
2021-11-05 11:47:35 [Print]
Recently, Shanxi Jianlong put boron-containing cold heading steel wire 10B21φ6
. 5mm, φ8mm and φ10mm on the market, which was successfully used in the production of 8 . 8-level inner hexagonal high-strength bolts.