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Damping Spring Kelly Bar Tool On Construction Works

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Address: 1903, Building 3, No. 10 Yard, Ronghua South Road, Beijing Economic and Technological Development Zone

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Country/Region	china
City & Province	beijing beijing

Damping spring on kelly bar construction works

kelly damping spring
Different kelly bar is matched different Model, such as :45*330*400
55*390*400
50*400*410
55*420*420
70*480*480 .et

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