Lifting Subs

Lifting sub is a special tool for lifting of the drill tools in petroleum, natural gas industry and geologic exploration. It is made form AISI 4145H modified chromium-molybdenum alloy steel according to API Specification 7. All threads are phosphated, copperized or cold worked. 

Jiyuan Sanhe Zhengyuan Petroleum Machinery Co., Ltd. is a high-tech enterprise specializing in manufacturing drilling tools for petroleum and geological exploration.The main products of the company are slick drill collars, spiral drill collars, non-magnetic drill collars, integral heavy weight drill pipes, stabilizers and lifting subs, etc. All the products have got the right to use API monogram and ISO9001 attestation. The whole processing program is strictly implementing even exceed the API Spec.7-1 requirements.Welcome to your specific inquires any time. We are sure to offer you the most competitive price in our line.