01
DRAWING REVIEW
Review drawings, dimensions and specifications before production confirmation.
Railway & Rail Transit Fasteners
HOT-DIP GALVANIZED TUNNEL SEGMENT BOLTS
Hot-dip galvanized curved bolts engineered to securely connect precast tunnel segments and maintain reliable joint alignment in railway and rail transit infrastructure.
01
STANDARD
Project DrawingCustomer Specification
02
MATERIAL
Carbon SteelAlloy Steel
03
SIZE RANGE
M6–M130
04
CUSTOMIZABLE
YES
TECHNICAL DATA
TECHNICAL SPECIFICATIONS
Available specifications are shown below. Custom requirements can be reviewed before quotation.
01
STANDARD
Project Drawing
Customer Specification
02
SIZE RANGE
M6–M130
03
MATERIAL
Carbon Steel
Alloy Steel
04
SURFACE TREATMENT
Hot-Dip Galvanized
05
CUSTOMIZABLE
YES
DRAWING-BASED PRODUCTION
CUSTOMIZATION CAPABILITY
Support for non-standard fasteners based on drawings, samples and technical specification review.
02
MATERIAL & GRADE
Material and strength grade are confirmed according to project requirements.
03
THREAD & DIMENSIONS
Thread type, diameter, length and special geometry can be evaluated.
04
SURFACE TREATMENT
Hot-dip galvanizing, zinc plating and other confirmed finish requirements can be reviewed.
INSPECTION & TRACEABILITY
QUALITY & DOCUMENTATION
Inspection scope and available documentation are confirmed according to the product standard and customer specification.
MATERIAL CHECK
Material and certificate review where applicable.
DIMENSIONAL INSPECTION
Critical dimensions and tolerance verification according to specification.
THREAD INSPECTION
Thread form and gauge inspection according to the confirmed requirement.
SURFACE / COATING
Surface treatment and coating inspection where required.