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Drill pipe is made from alloy steel. Acc.to API Spec.5DP. All threads are phosphated, copperized or cold worked. All connections are equipped with pressed steel thread protectors. All threads are machined with CNC Lathes-Double-shouldered and special threads
High quality drill pipe
HENAN WEIN INDUSTRY CO.,LTD.
ductile cast iron pipes;Pipes and fittings;ductile iron fittings;Short di pipes
