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Jiyuan,Henan,China China
The spiral drill collars are made from 4145H modified chromium-molybdemum alloy steel acc. to API Spec.7 and SY/T5144.
Integral Heavy Weight Drill Pipe is made from AISI 4145H alloy steel.acc. to API Spec.7 and SY/T5144.
Non-magnetic stabilizer is made from low carbon stainless steel researched by ourself. According to the requirements of contracts or agreements betwee
The drill collars are made from 4145H modified chromium-molybdenum alloy steel acc. to API Spec.7 and SY/T5144. All threads can be phosphated, copper
Contact Person Wang Ada
Address Jiyuan, Henan
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