kelly valve

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[CN] Hei Longjiang North Shuangjia Drilling Tools Co., Ltd. [Manufacturer]
Key Products/Services:
Business Overview: 　　　We specialize in manufacturing all kinds of drilling stabilizers, hydraulic adjustable stabilizer, roller reamer, non-magnetic drilling stabilizers, s...

[CN] TianHe Oil Group HuiFeng petroleum equipments Co.,Ltd [Manufacturer]
Key Products/Services:
Business Overview: TianHe Oil Group Production include Drill Collar (DC),Drill pipe (DP),Heavy weight drill pipe(HWDP),square kelly,hexagonal kelly,stabilizer,Hole opener, Rol...