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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: ≤18h CertifiedTerms of Payment: LC, T/T, D/P
AI-Powered supplier vetting
SummaryTaicang Zhongbo Railway Fastening Co., Ltd. is a China-based limited manufacturing company established in 2008, specializing in railway fastening systems, bolts, clips, spikes, and related rail accessories. Evidence indicates a 23,000 m² site, more than 10 production lines, substantial testing and production equipment, and multiple product-specific output capacities. The supplier exports to numerous regions and reports supply experience in more than 50 countries. Its quality credentials include ISO 9001:2008 through SGS and CRCC certification, with products reportedly approved by several major railway organizations. The company has a dedicated R&D team and manufactures to BS, AS, JIS, UIC, and customer-requested specifications. However, the provided information does not sufficiently establish after-sales service processes or independently verify financial strength; conflicting employee figures also limit certainty regarding organizational scale.
Supplier typeThe supplier is identified as Taicang Zhongbo Railway Fastening Co., Ltd., a China-based limited company and factory located in Taicang, Jiangsu. Its stated industry is manufacturing, and its product range is centered on railway fastening and related industrial components.
CertificationsThe supplier reports ISO 9001:2008 certification through SGS and certification from the China Railway Product Testing and Certification Center (CRCC). It also states that products have been approved by several railway companies, although the provided slices do not independently document the scope or current validity of each approval.
R&D capabilityThe supplier reports a professional R&D team comprising 3 senior national-class engineers, 5 engineers, and 8 assistant engineers, while another slice records seven years of total R&D engineer experience. The stated focus is ongoing R&D and improvement of rail fastening products, supporting a demonstrated product-development function.
Production capacityThe supplier reports a 23,000 m² manufacturing site, more than 10 production lines, and more than 260 testing and production facility sets. It lists capacities for rail clips, rail bolts, screw spikes, tunnel connection bolts, structural bolts, and heat treatment, indicating broad and substantial manufacturing capability.
Customization capabilityThe supplier states that it manufactures according to BS, AS, JIS, UIC, and specifications requested by clients. Its broad range of rail fastening products and application-specific systems supports customization to different standards and customer requirements, although no detailed customization workflow or examples are provided.
Client casesThe supplier reports exports or product use in more than 50 countries and identifies markets across the Americas, Europe, Australia, Africa, Southeast Asia, East Asia, and the Middle East. It also names railway organizations including UPRR, BNSF, SBB, SRT, PNR, and MTR as product approvers or customers, providing explicit evidence of international customer exposure.
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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