Purchase Qty. Reference FOB Price
1-4 Pieces US$19,938.00
5-9 Pieces US$19,569.00
10+ Pieces US$19,385.00
Product Description
D Mingwell high air pressure DTH hammer without foot-valve It has following advantages: 1. Bit without foot valve will avoid the problem of foot valve broken or thermal expansion. 2.Lower energy consumption and higher impact frequency. The drilling speed is 15%-30% higher than the one with ...