Tigerrig warehouse supply API 7K HDS/HDP/RTM/RTS mater roller kelly bushing for oil well drilling rig-Zhonghang(avic) Machinery Manufacturing Group Co., Ltd

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Tigerrig warehouse supply API 7K HDS/HDP/RTM/RTS mater roller kelly bushing for oil well drilling rig

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Features
Specification

Tigerrig warehouse supply API 7K HDS/HDP/RTM/RTS mater roller kelly bushing for oil well drilling rig

Production Description:

The Kelly roller complement is suitable for 17 1/2-49 1/2in Turntable. The product is designed and manufactured according to API Spec 7K.

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Specifications

Model	Types of	Drive mode	Applicable square drill pipe specifications
Model	Types of	Drive mode	Quartet	Quartet
HDS	Heavy		2 1/2-6	3-6
27-HDP		Quartet	2 1/2-6	3-6
20-HDP		Pin	2 1/2-6	3-6
4KRVS	Medium	Pin	2 1/2-5 1/4	3 -4 1/4
20-MDP		Quartet	2 1/2-4 1/4	3 -4 1/4
17-MDP		Pin	2 1/2-4 1/4	3-4 1/4
4KRBM	Light weight	Pin	2 1/2-4 1/4	3- 4 1/4