We could supply all kinds of drilling pipes forgings. We choose excellent alloy steel AISI 4130, AISI 4140, AISI 4330, AISI 4340, AISI 8620 etc. Our customer's drilling pipes have been used on 10000 meter oil well on land or 5000 meter oil well on the sea, some drilling pipes have endured -50 C degree low temperature working condition, our customer get the longest working time.
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We have a series of inspection equipments and test appliance, including chemical analysis, metallographic analysis, mechanical property test, charpy impact test, utrasonic test, magnetic article test etc.

All of the ingot is melted by LF + VOD furnace. We could choose ESR raw material according to the customers' requirements. On this condition we could ensure that P, S content is lower than 0.010%, H content is lower than 1.8 PPM...