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Tunnel Bolt/ Segment Bolt for Underground
US$3.15
2,000-9,999 Pieces
US$2.85
10,000+ Pieces
Sample price:US$10.00/piece.Request sample
Product profile
Customization
AvailableCertification
Arema, BS, ASTM, Uic, TbType
Track TrainModel NO.
M20Product Material
Carbon Steel, 35#, 45#, Q235Product Grade
4.6, 4.8, 6.8, 8.8, 10.9Usage
Railway FastenerProduct Standard
DIN, ANSI, Arema, GB, GOST...Surface Coating
HDG, Black, Plain OiledFree Sample
Yes, According Clients OrderDelivery Time
Within 30 DaysPayment
Tt/ L/CTransport Package
Wooden CasesSpecification
SGSTrademark
ZBRFOrigin
ChinaProduction Capacity
400, 000PCS/MonthKey features
Comprehensive Material Options: Available in Carbon Steel, 35#, 45#, Q235, 35CrMo, 42CrMo, 40Cr, and Stainless Steel.
Wide Grade Range: Offers grades 4.6, 4.8, 6.8, 8.8, and 10.9 to meet diverse strength requirements.
Customizable Surface Coating: Options include HDG, Black, Plain Oiled, Sherardized, White/Zink Plated, Dacromet, and others.
Flexible Size Specifications: Complete range from M16 to M30 diameters with no length limit restrictions.
Global Standard Compliance: Certified by Arema, BS, ASTM, UIC, TB, DIN, ANSI, GB, and GOST standards.
Rapid Delivery Capability: Standard delivery within 30 days, with peak season lead time of 1-3 months.
Free Sample Availability: Free samples provided according to client orders to ensure product quality.
Advanced R&D Support: Backed by 7 senior engineers and 18 patents in metro and tramway fastening systems.
Company profile

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service AvailableExport Year: 2006-11-30 CertifiedNearest Port: Shanghai PortAverage Response Time: ≤4.74h CertifiedTerms of Payment: LC, T/T, D/P
AI-Powered supplier vetting
SummaryTaicang Zhongbo Railway Fastening Co., Ltd. is a Chinese supplier established in 2008, specializing in rail fastening systems with a strong export presence, comprising up to 50% of total sales. Operating over 10 production lines in a 23,000 m² facility, the company has an annual output exceeding US$100 million. It holds ISO9001:2008 and CRCC certifications, and its products are used in over 50 countries. The firm features a robust R&D team and serves diverse markets including North America and Southeast Asia.
Supplier typeThe supplier is a combined entity, specifically a limited company, operating as a factory in the manufacturing sector.
CertificationsThe company holds ISO9001:2008 certification and certifications from the China Railway Product Testing and Certification Center, signifying strong compliance with industry standards.
Financial creditThe supplier has significant registered capital and reports substantial annual turnover and assets, indicating solid financial credibility.
R&D capabilityThe supplier has a professional R&D team comprising senior national class engineers, indicating a strong focus on innovation in rail fastening systems.
Production capacityOperating more than 10 production lines with a large annual output and diverse product range, the company demonstrates robust production capabilities.
Customization capabilityThe supplier manufactures according to various international standards and client specifications, indicating strong customization capabilities.
Client casesThe supplier's products are approved by major railroad companies and are used in over 50 countries, reflecting a strong track record with diverse customer cases.
Product Q&A
Q:What materials are available for the tunnel bolt?
A:
We offer Carbon Steel (35#, 45#, Q235), 35CrMo, 42CrMo, 40Cr, and Stainless Steel options.
Q:What is the delivery time for orders?
A:
Standard delivery is within 30 days. During peak season, lead time may extend to 1-3 months.
Q:Can the surface coating be customized?
A:
Yes, we provide HDG, Black, Plain Oiled, Sherardized, White/Zink Plated, Dacromet, and other specified coatings.
Q:What are the available grades for the bolts?
A:
Our products cover grades 4.6, 4.8, 6.8, 8.8, and 10.9 to suit various load requirements.
Q:Do you offer free samples?
A:
Yes, free samples are available according to client orders.
Send Inquiry
*To:
Taicang Zhongbo Railway Fastening Co., Ltd.
Taicang Zhongbo Railway Fastening Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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