Threeway Steel Co.,Ltd
No.9 Xiangfu Road, Changsha, Hunan, China, PC: 410116
Drill pipe is hollow, thin-walled, steel or aluminium alloy piping used on drilling rigs.
It is hollow to allow drilling fluid to be pumped down the hole through the bit and back up the annulus.
Modern drill pipe is made from the welding of at least three separate pieces:
box tool joint
pin tool joint
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