Our Petroleum drilling tools include Drill Collar, Heavy Weight Drill Pipe, Stabilizer, Kelly, Non-Magnetic Drill Collar, Non-Magnetic Stabilizer, Non-Magnetic Flex Collar etc.

Steel drilling tools are made from AISI4145H or AISI4145H MOD alloy steel. After quenching and tempering through 20 meters horizontal intermedium frequency heat-treatment line or 10 meters pit type quenching and tempering furnace, specimen are taken from one inch beneth the outer surface from both ends of each bar. Hardness can reach BHN285-341, impact value above 54 Joules and other mechanical properties conform to API SPEC 7-1.