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        Your present location:首页 >> PRODUCT >> High strength bolts Division >> The shield segment bolt >> Bolt of shield
        • Product name: Bolt of sh...
        • On time: 2014-05-19
        • Views : 142

        Product overview
        Shield segment bolt shield is a kind of construction method of tunnel under the ground. Has been widely used in subway, railway, highway, municipal, hydropower and other tunnel engineering. In the construction, the use of shield machine in underground excavation, in order to prevent the soft foundation excavation surface collapse or maintain excavation face stability, at the same time in tunnel lining operations, the lining of prefabricated segment by segment bolt reinforcement. Due to the different size of different geological conditions on shield applied pressure, design and mechanical properties of shield segment bolt is 5.8, 6.8, 8.8, 10.9 multiple levels.
        Physical map:


        Specifications

        Arc lengthmm

        Strength grade

        Surface treatment method

        M25~M39

        480~880

        4.6、4.8、5.6、5.8、8.8

        Dacromet, hot galvanizing


        Specifications

        Lengthmm

        Strength grade

        Surface treatment method

        M25~M48

        480~880

        4.6、4.8、5.6、5.8、8.8

        Dacromet, hot galvanizing

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