Tunnel Bolts also called curved bolts or segment bolts, are used to permanently fix tunnel segments together with the numerous metal beams and posts through a radius hole, which make up the tunnel’s frame. They can be applied to both radial and circumferential joints. Tunnel segment bolts are vital for maintaining the entire tunnel’s structural integrity.
Size: M16-M80
Strength Grade:8.8,10.9 and 12.9.
Thread Pitch:5H,6H,7H
Materials: Stainless steel, alloy steel
Coating: Galvanized, Nickel-plated, Chrome-plated, Black oxide, Dacromet
Standard: GB, DIN, ISO, ANSI, JIS, BS, Non-standard
Customized: as per customers requirements/drawings
Package:woven bag + pallet + packing belt + stretch film.
Anyang Railway Equipment Co., Ltd(AT) is a professional China manufacturer of High Tensile Special Bolts Long Tunnel Curve Bolts, Curved Tunnel Bolts, Segment Bolt for Subway or Railway with washers and nuts by various grades, sizes, and load capacities, depending on their applications.
