Henan Shenlong Petroleum Drilling Tools Co.,Ltd

Mechanical Properties Test

Shenlong performs Tensile Test, Impact Test and Hardness Test in Shenlong’s own laboratory. To ensure the quality, test samples are taken from both ends of each bar of Drill Collars.

Tensile and Impact test are performed according to API SPEC 7-1.

Hardness can be assured both 1” beneath the outer surface according to API SPEC 7-1 and the 4 quadrants across the neck OD according to NS-1.