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Yugong,Jiyuan,Henan,China China
Heavy weight drill pipes we produce are integral. Materials are from AISI 4145H modified drill collar material. Hard-banding on both end and center of
Drill collars we produce is made from 4145H forging or rolling modified steel. Raw Materials are all from Top China Special Steel Group, so from the f
Shenlong's non-mag products include non-magnetic drill collar and non-magnetic stabilizer. The material is chrome manganese stainless steel. High
الشخص الذي يمكن الاتصال به Ms. nancy wang
عنوان Yugong, Jiyuan, Henan
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