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It is mainly used for mining tunnel support ,with the features of high presure long fit strong structure. chinacoal05
Name of Products:U-Beam mining support steelSpec.: 25U, 29U, 36U Standard:GB/QBMaterials: 20MnK, Q275 Length: 8,9,10,12m
山东中煤工矿物质集团有限公司