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Weigao Petroleum Drilling Tools Manufacturing Co., Ltd
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About Us
sxweigaowsj(at)live.cn
shanxiweigao(at)hotmail.com
Our company mainly produces drilling tools: square and hexagonal kellys,heavy weight drill pipes,spiral heavy weight drill pipes,non-magnetic intergral heavy weight drill pipes,all kinds of drilling collars,lifting subs,non-excavation drill tools,cross-over subs,many kinds of high-precision manufacturing and inspection equipment: special numerical-control pipe thread lathes, large cylindrical lathes, large milling machines, deep-hole boring ...
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non-excavation short drill collar
It's made from N1310 low ...
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square kelly
Specification:2-1/2" 2-7/8" 3" 3-1/2" 4-1/4" 5-1/4"
Kellys ...
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Intergral heavy weight drill pipe API SPEC 7-1
Made from AISI 4145H alloy ...
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drill collar with slip groove
Slip groove made on box thread face of slick ...
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