Washover pipe is a special toll to release the stuck section of drillstring in the well bore. We offer a complete ranger of washover pipe in the industry. Our unique FJWP thread is two-step double....
Hei Longjiang North Shuangjia Drilling Tools Co., Ltd. ( Sj-Drilling) is a holding company of Heilongjiang North Tool Co. Ltd. under China South Industry Group Co. The company has a registered....
Hole opener is used for expanding the drilled hole, the cutter are manufactured under the severe quality control. All our hole openers are field maintainable , with easy assembly and disassembly.....