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5-1/4"、4-1/4"、3-1/2" 、3" Kelly Bar
Stock450
Manufacturer:Shuguang Huayang/Shanxi Fenglei
Steel grade:4145H
Service base:Domestic (Xinjiang/Inner Mongolia/Sichuan/Tianjin/Dongying) and some regions overseas
Specification & model:3″～5-1/4″
Type:Square kelly/hexagonal kelly
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Kelly Bar
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Product details
Kelly Bar
Ⅰ.Product introduction
Ⅱ.Application cases and Qualifications
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