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Coil Spring For Kelly Bar Rotary Drilling Rig

Damping spring is the accessories for kelly bar parts. The function of damping spring is to protect the drill bit and kelly bar thus to increase the drilling speed in hard soil. Here is the specifications of FAE damping spring: 1.super quality 2.competitive price 3.strong intensity 4.high...

Detailed description

疯狂赛车Damping spring is the accessories for kelly bar parts.

The function of damping spring is to protect the drill bit and kelly bar thus to increase the drilling speed in hard soil.

Here is the specifications of FAE damping spring:


1.super quality

2.competitive price

疯狂赛车3.strong intensity

4.high durability


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