What surface treatments are available?

Options include Plain, Zinc Plated, Hot DIP Galvanized, Dacromate coating, and others like Nickel and Passivated.

What is the lead time for production?

The average lead time is 1-3 months for both peak and off-peak seasons.

Where are the manufacturing facilities located?

We have two factories located in Ma'anshan, China, specializing in railway fasteners.

Galvanized Tunnel Construction Bolt with Washer Spear Tunnel Bolt for Tunnel Construction

Name: Galvanized Tunnel Construction Bolt with Washer Spear Tunnel Bolt for Tunnel Construction
Brand: Maanshan Kingrail Technology Co., Ltd.
SKU: 2077201442

Anhui, ChinaMaanshan Kingrail Technology Co., Ltd.

US$0.40-0.60

100 Pieces

Product profile

Customization

Available

After-sales Service

1 Year

Warranty

1 Year

Model NO.

Tunnel Construction Bolt

Customized

Certification

ISO14001, ISO9001

Material

Q235,10b21,Stainless Steel

Standard

GB/T 1346,GB,JIS,ANSI,DIN,BS

Processing

Hot Rolling

Surface

Bronze,Zinc,Rainbow,Plain,Nickle,Passivated,Electr

Production

OEM ODM Custom

Sizes

M1.6,M2,M2.5,M3,M3.5,M4,M5,M6,M8,M10-M20

Head Type

Hexaonal Head/Double End Head

Drive Type

Slotted(Socket),Square,Pz,Triangle,H,Torx(

Heat Treatment

Tempering,Hardening,Stress Relieving,etc.

Application

Railway,Subway,Tunnel Building

Grade

4.8,5.6,8.8.10.9,12.9

Quality Control

Inspection 100%

Coating

Plain, Zinc Plated, Hot DIP Galvanized.

Thread

Half or Full Thread

Material 2

Stainlesss Steel, Carbon Steel, Q235

Transport Package

Wooden Box/Pallet

Specification

Tunnle Segement Bolt

Trademark

Kingrail Parts

Origin

China

HS Code

86080090

Production Capacity

50000PCS/Year

Key features

Comprehensive Customization: Available in various materials, sizes, grades, and coatings per customer drawings.

Dual Certification: ISO9001, ISO14001, and CRCC certified for high-quality railway fasteners.

1-Year Warranty: Includes 1-year after-sales service coverage for all mechanical defects.

Wide Size Range: Sizes from M1.6 to M30 with lengths up to 500mm available.

Diverse Coating Options: Zinc Galvanised, Hot DIP Galvanized, Dacromate, and other surface treatments.

High-Grade Materials: Mild Steel, High Tensile, and Stainless Steel (304, 316) grades available.

100% Quality Control: Strict inspection process ensures 100% quality for all tunnel bolts.

Global Market Experience: Serving demanding markets in USA, Europe, Asia, and South America for 20+ years.

Company profile

Importers and ExportersHigh Repeat Buyers Choice

Maanshan Kingrail Technology Co., Ltd.

Anhui, China

Business Type: Manufacturer/FactoryAverage Response Time: ≤1.89h

AI-Powered supplier vetting

SummaryThe supplier is a trading company with a primary focus on exporting, contributing 71% to 90% of total sales. It holds ISO 9000 and ISO 9001 certifications, indicating a commitment to quality management. However, the supplier has limited R&D capabilities with only one engineer and lacks SDK availability. Its production capabilities include wheels, track materials, and metal products. The supplier does not maintain overseas warehouses or showrooms and lacks the ability to handle overseas services independently. Customization services are robust, offering various levels of customization, and the supplier provides OEM and ODM services.

CertificationsThe supplier holds ISO 9000 and ISO 9001 certifications, indicating adherence to recognized quality management standards.

R&D capabilityThe supplier has limited R&D capability with only one engineer and no SDK availability, and it did not release new products in the past year.

Production capacityThe supplier has a defined production capacity for wheels, track materials, and metal products, but lacks inventory management and overseas facilities.

Customization capabilityThe supplier offers comprehensive customization services, including OEM and ODM services.