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Design and application of tube bolt for subway

addTime2017/10/23 13:43:53 Last Edit Time:2018/1/29 10:12:56 hits:749

Pipe bolt; widely used in subway construction, mine construction fasteners. The pipe bolt is divided into circumferential and longitudinal. In some designs, the circumferential and longitudinal specifications are the same. In some designs, both specifications and even strength grades are used in the ring direction and the longitudinal direction.

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