Precision Fasteners for Demanding Industries

Manufacturer of high-intensity dielectric unions, rock bolt accessories, expansion shells, and custom fasteners since 1995. Trusted by mining, construction, and pipeline industries worldwide.

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15,000 sqm Factory

Advanced production line with full in-house capabilities from cold drawing to surface treatment.

ISO & Quality Certified

Committed to quality-first principles, contract compliance, and customer satisfaction.

Global Exporter

Products supplied to over 50 countries, with participation in major international exhibitions.

About CL Fasteners

Taizhou Changlong Fasteners Co., Ltd., established in 1995 in Zhejiang Province, China, has grown from a small workshop into a medium-sized factory specializing in high-intensity fasteners. With over 20 years of experience, we serve the mining, construction, and pipeline industries with precision-engineered components.

Our 10,000 sqm facility houses hundreds of employees, including 16 engineers and managers. We maintain fixed assets valued at RMB 15,000,000 and operate an advanced production line covering cold drawing, heat treatment, cutting, and surface finishing.

Quality First Customer Supreme Global Exporter Since 1995

Our Core Strengths

We combine technical expertise, quality assurance, and customer-centric service to deliver reliable fastening solutions.

Professional After-Sales Service

We ensure delivered products meet quality standards and respond promptly to any site issues.

Official Certification

Committed to contract compliance, quality-first principles, and long-term customer trust.

No.1 Sales Volume

Market leader in mining fasteners with consistent delivery and on-time performance.

Sustainable Development

Customer supreme, service for honor, and good faith as our foundation for growth.

Our Products

High-intensity fasteners engineered for durability, precision, and performance in extreme conditions.

Spherical Seat Nut

For mining accessories, ensures even load distribution and alignment under stress.

Material: 1045, 42CrMo
Surface: Plain, Black, Electro Galvanized, Hot Dip Galvanized
Thread: T, R, G, Metric

Expansion Shell Rock Bolt

Used in tunneling and underground mining for roof and wall support.

Sizes: ∮36, ∮38, ∮45, ∮57
Thread: M20, M24
Capacity: Up to 14 Ton

FIP X C Dielectric Union

Prevents galvanic corrosion in piping systems. Low-lead compliant.

Type: FIP X C, MIP X FBP, Flange
Material: Brass, Copper
Standards: ASTM, ISO

Threaded Pipe Union (FIP X FIP)

High-pressure connection for pipelines requiring disassembly.

Size Range: 1/2" to 4"
Pressure: Up to 3000 PSI
Finish: Zinc Plated, Plain

33mm Dome Ball Washer

Spherical washer for even fastening on misaligned surfaces.

Diameter: 33mm
Surface: Various treatments available
Function: Alignment compensation

Eye Nuts for Mining Accessories

Lifting and rigging applications in mining and construction.

Material: 1045 Steel
Finish: Hot Dip Galvanized
Thread: Metric, UNC

Square Steel Nut (Zinc-Plated)

Four-sided nut for high-torque applications with square bolts.

Size: M5 to M30
Coating: Zinc Plated
Standard: DIN 557, ISO 867

39mm Friction Bolt Stabilizer Ring

Ensures stability and load distribution in rock bolt systems.

Material: Mild Steel
Surface: Plain
Diameter: 39mm

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Why Choose CL Fasteners?

Advanced Manufacturing

Full in-house production line from raw material processing to final surface treatment ensures quality control and fast turnaround.

Quality Assurance

Rigorous testing and adherence to international standards guarantee reliability in critical applications.

Global Reach

Exported to over 50 countries with participation in major industry exhibitions like MINE Xpo and Electra Mining Africa.

Dedicated Support

Professional after-sales service and technical support available worldwide.

Frequently Asked Questions

What materials do you use for your fasteners?

We use high-strength materials including 1045 carbon steel, 42CrMo alloy steel, brass, and copper depending on the product and application.

Are your products certified?

Yes, we adhere to quality-first principles and comply with international standards. Our business tenet is contract compliance and customer-first service.

Can you customize fasteners?

Absolutely. We specialize in custom dielectric unions, rock bolt accessories, and non-standard high-intensity fasteners tailored to your specifications.

What surface treatments are available?

We offer plain, black, electro-galvanized, hot-dip galvanized, zinc-plated, and other finishes based on environmental and performance requirements.

How do I place an order?

Visit clfasteners.com to browse products and contact us directly for inquiries, quotes, and custom orders.

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