Curved bolts are used to permanently fasten tunnel sections together through radius holes. They can be applied to radial and circumferential joints.
Kingrail Parts can supply curved bolts in diameters from M16 to M30. We also offer other accessories such as washers and nuts. We can customize the length, diameter and material of curved bolts according to customer needs.
Specification:
Material: carbon steel or stainless steel----Q235, 35#, 45#, 35CrMo, 42CrMo, 40Cr, etc.
Specifications: Complete range of diameters from M16 to M30, no length restrictions.
Rating: 4.6 and high strength 8.8
Surface treatment: plain (oiled), galvanized, hot dipped galvanized, white zinc plated, yellow zinc plated, black, dacromet, geomet or other specified by customer
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