Henan Gongyi strong machinery factory   

Henan Gongyi strong machinery factory specializing in the production of rock drilling machine, spiral Mother turn the nut, copper bushing, copper bushing, copper worm, a copper sleeve. The product uses the metal type centrifugal casting, dense internal organization, strength and high wear resistance, long service life, low price! Products are exported to Shanxi, Sichuan, Guizhou, Jiangxi, Hunan, Henan, Shandong and other provinces and cities. Varieties are: Y18 Y24 Y27 Y28 7655. Material: ZQSN7-0.2 ZQSN10-1 ZQSN6-6-3 ZQSN5-5-5 H62 H58...