WEDGE SLEEVE DROP-IN MACHINE BOLT CUSTOM

Anchor Bolts

Post-installed expansion anchoring systems · wedge · sleeve · drop-in · for concrete and masonry substrates

30,000 m²

Facility Area

Manufacturing footprint supporting high-volume anchor production

80+

Cold Heading Units

Multi-station headers for precision anchor components

800 t

Monthly Capacity

Consistent output for both standard and custom orders

Anchor bolts are post-installed fastening systems designed for securing structural supports, equipment, and fixtures to concrete, masonry, or block substrates. Unlike cast-in-place foundation bolts, anchor bolts are installed after the concrete has cured, providing flexibility in positioning and enabling retrofit applications.

Zhejiang Chance & Union supplies a comprehensive range of anchor bolts including wedge anchors, sleeve anchors, drop-in anchors, and machine bolt anchors. Products are available in carbon steel, stainless steel, and zinc-plated finishes, with sizes ranging from M6 to M36 and imperial equivalents. Each anchor is manufactured to recognized standards with consistent expansion performance and pull-out resistance.

Anchor Types

Wedge Anchor: Expansion clip for solid concrete
Sleeve Anchor: Fully threaded, for concrete and block
Drop-In Anchor: Flush-mount for overhead applications
Machine Bolt Anchor: Heavy-duty, for high loads
Custom Configurations: Special diameters and lengths

Product Specifications

View full specifications

Diameter rangeM6 – M36 · 1/4″ – 1-1/2″

Length rangeStandard and custom lengths

Thread class6g (metric) · 2A (UNC) · rolled or cut

MaterialsCarbon steel · stainless 304 · stainless 316

Finish optionsZinc plated · hot-dip galvanized · plain

Anchor typesWedge · Sleeve · Drop-In · Machine Bolt

StandardsASTM · DIN · custom specifications

Manufacturing & Supply Chain

Production Capability

Cold heading and thread rolling for precision anchors
Heat treatment for expansion clip performance
Zinc plating and passivation lines
CNC machining for special configurations
Support for prototyping and mass production

Logistics & Inventory

Permanent stock of 5,000+ specifications
Storage capacity exceeding 2,000 tons
24-hour order processing
3-day rapid shipping for standard items
Lead time for custom orders: 7–25 days

Quality Assurance

Testing Equipment

Optical sorting for dimensional inspection
Pull-out test fixture for performance validation
Salt spray test chamber (72-hour)
Hardness and tensile testing

Quality Standards

ISO 9001 certified
IATF 16949 certified
Ex-factory pass rate: 99.9%
≤30-minute factory response time

Traceability

Material test reports with heat numbers
Full traceability from raw material to finish
Batch-specific testing records
Third-party inspection available

R&D & Engineering Support

With nearly 20 years of industry experience, our R&D team has developed over 1,000 custom fastener solutions for clients across 25 countries. We invest 5% of annual revenue into R&D, focusing on:

Anchor performance analysis: Pull-out load calculation, edge distance optimization, and failure mode analysis
Custom development: Non-standard diameters, lengths, and expansion clip designs
Prototyping: Rapid sample production for concrete embedment testing
Installation guidance: Drill bit sizing, embedment depth, and torque specifications

Application Scenarios

Building construction: Structural steel framing, curtain wall attachments, and seismic bracing
Industrial facilities: Equipment anchoring, conveyor supports, and machine bases
Infrastructure: Bridge railings, highway barriers, and sound wall supports
Telecommunications: Antenna mounts, equipment racks, and shelter anchoring
Renovation & retrofit: Post-installed connections in existing concrete structures

Anchor Selection Guide

Selecting the right anchor bolt depends on several factors:

Substrate type: Wedge anchors for solid concrete; sleeve anchors for block or masonry; drop-in anchors for flush-mount applications in concrete.
Load requirements: Consider static loads, dynamic loads, and seismic design categories.
Edge distance: Maintain sufficient spacing from concrete edges to prevent breakout failure.
Corrosion environment: Zinc-plated for indoor applications; stainless steel for outdoor, marine, or chemical exposure.
Installation access: Drop-in anchors for overhead applications; wedge anchors for standard access.

Frequently Asked Questions

What is the difference between wedge anchors and sleeve anchors?

Wedge anchors feature a tapered end and an expansion clip that expands against the concrete when the nut is tightened, providing high pull-out resistance in solid concrete. Sleeve anchors have a fully threaded body with a cylindrical sleeve that expands against the substrate, suitable for concrete, block, and brick.

What materials and finishes are available for anchor bolts?

We supply anchor bolts in carbon steel (zinc-plated or plain), and stainless steel (304 and 316). Finishes include zinc plating, hot-dip galvanizing, and plain. Selection depends on strength requirements and environmental exposure.

How do you ensure quality and traceability for anchor bolts?

Each batch undergoes dimensional inspection, pull-out testing, and hardness verification. We provide material test reports (MTR) with heat numbers for full traceability. Our ISO 9001 and IATF 16949 certified quality systems ensure consistent product quality.

What is your typical lead time for anchor bolts?

Standard sizes in stock can ship within 3 days. For custom diameters, lengths, or materials, lead time is typically 7 to 25 days depending on order quantity and specification complexity. We support both small-batch and large-volume orders.

Can you produce anchor bolts to non-standard specifications?

Yes. Our R&D team has developed over 1,000 custom fastener solutions. We can accommodate non-standard diameters, lengths, expansion clip designs, and special coating requirements based on your project needs.

Company Profile

Fastening Chances, Strengthening Union

Zhejiang Chance & Union Import and Export Co., Ltd. (abbreviated as Chance & Union) is a family-owned China Anchor Bolts company under SEA Monies Metal Co., Ltd., inheriting 20 years of family experience and quality heritage in metal manufacturing. Relying on Shengzhao Metal's strong production capacity and supply chain advantages, we specialize in the R&D, production and global sales of high-quality metal products. Adhering to the family's pursuit of precision, rigorous working attitude and long-term commitment, we deliver stable and reliable products and services to customers across the globe.

Leveraging the factory's robust R&D and production capabilities, we specialize in high-strength rivets bolts, nuts, washers, pins, screws, and various non-standard custom parts. As experienced Custom Anchor Bolts Suppliers, we provide flexible manufacturing solutions for different customer requirements. Our product range covers materials including stainless steel, alloy steel, aluminum alloy, copper, and special alloys, utilizing processes such as cold heading, hot forging, and CNC machining. Our products are exported to over 25 countries, serving more than 200 clients.

Chance & Union is committed to seamlessly connecting "Manufactured in China" with the international market, providing global customers with one-stop fastening solutions from R&D to mass production through professional technology and exceptional quality.