chinacoal05
www.chinacoalintl.com
m.chinacoalintl.com
we provide service of enterprise's customs declaration, inspection.
Product Introduction
It is mainly used for mining tunnel support ,with the features of high presure long fit strong structure.
Main Parameter
Name:
|
U-Beam mining support steel
|
Specification:
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25U, 29U, 36U
|
Standard:
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GB/QB
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Materials:
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20MnK, Q275
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Length:
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8,9,10,12m
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