Tunnel Segment Bolts with Washers and Dowels

Signum Fastening Company has a full line of fastening systems for tunnel-constrction and transit railways, offering one of the most inclusive product portfolios worldwide. We offer tunnel segment bolts and fasteners according to your requirements or drawings. Signmu is your one-stop source for standard or non-standard fasteners cut to length and hreaded to your exact application specifications.

We also offer fasteners along with the tunnel segment bolts,such as washer and dowels. Normally, the washer is made of Q253 steel, and the dowel is made of polymaide(PA).

Tunnel Bolts also called curved bolts or segment bolts, are used to permanently fix tunnel segments together with the numerous metal beams and posts. Tunnel bolts be produced in various grades, sizes, and load capacities, depending on their intended use. These structural bolts also come with uniform hexagonal heads to fit all types of wrenches, whether manual or automatic, box ended or open ended.

Capacity of of Tunnel Segment Bolts

Materials: Steel Q235, 35#, 45#; Alloy Steel 40Cr, 42CrMo, 35CrMo 

Grade: 4.6/4.8/5.6/5.8/8.8/10.9/12.9 

Surface: Plain Oiled, Oxygen Black, Zinc Plated, Hot Dip Galvanized, Dacro coating Sample: Free Standard: UIC864-2 

Packing:25KG per double layer woven bag in fumigation free pallet 

MOQ: 3000 Piece/Pieces 

Supply ability: 2,300 Tons per Month 

Delivery: within 30 days

Production Steps of Tunnel Segment Bolts

Specifics forTunnel Segment Bolts

Specialized designs: Tunnel segment bolts are designed for specific uses and come in various shapes, such as straight, double-ended, or arc-shaped, depending on the tunnel segment and design.

Material grades: They are manufactured in different strength grades, such as 5.8, 6.8, or 8.8, and are made from materials like Q235 or 45# steel.

Surface treatment: Zinc plating is a common surface treatment for tunnel segment bolts to enhance durability and corrosion resistance.

Testing: Before final inspection, bolts undergo various tests, including fatigue and tensile shear tests, to ensure they meet required specifications. 

Manufacturer Of Tunnel Segment Bolts

Kunshan Signum Machinery Technology Co.,Ltd is able to supply tunnel segment bolts according to customers' requirements or drawing with competitive price.

Contact Us

Direct Line:+86 512 50353196

Whatsapp:+86 158 6266 4803

Email: admin@rail-fastening.com

Web: www.rail-fastening.com

Address: 120 Tongjing Road, Lujia Town, Kunshan, Jiangsu 215331, China