Product Overview

Accurate foundation connections are essential for the safe and efficient installation of steel structures. ZSJH Steel supplies precision-manufactured anchor bolt assemblies that connect steel columns and structural equipment securely to concrete foundations.

Each assembly can be manufactured according to the approved foundation plan, column base plate drawing and bolt layout. We provide individual anchor rods as well as complete anchoring systems consisting of bolts, nuts, washers, anchor plates and positioning templates.

Our customized production service helps contractors maintain correct bolt spacing, elevation and alignment during concrete placement, reducing adjustment work during steel column erection.

Complete Anchor Bolt Solutions

Our supply scope can include:

• Pre-embedded anchor rods

• L-shaped and J-shaped foundation bolts

• Straight threaded anchor rods

• U-shaped foundation bolts

• Plate-ended anchor bolts

• Welded anchor bolt cages

• Steel positioning templates

• Matching nuts and washers

• Anchor sleeves and protective caps

• Customized export packaging

Technical Specifications

Main Advantages

Accurate Bolt Positioning

Positioning templates maintain the designed bolt spacing and alignment during concrete placement, making subsequent steel column installation more efficient.

Customized for Each Foundation

Bolt diameter, embedment length, projection height, thread length and template hole spacing are produced according to the approved structural drawings.

Complete Assembly Supply

Bolts, nuts, washers, anchor plates and templates can be delivered as matched sets, reducing the risk of missing or incompatible components at the jobsite.

Reliable Foundation Connection

Correctly designed and installed anchor bolt systems transfer tension, shear and overturning forces between steel columns and concrete foundations.

Corrosion Protection Options

Hot-dip galvanizing and other protective finishes are available for humid, coastal, industrial and outdoor environments.

Convenient Identification and Packing

Anchor bolt assemblies can be grouped according to grid line, column number or installation sequence when identification requirements are provided by the customer.

Typical Anchor Bolt Configurations

Anchor Rod with Bottom Plate

A straight threaded rod connected to a steel bearing plate provides an increased anchorage area inside concrete. It is suitable for industrial columns and heavy equipment foundations.

Anchor Bolt Cage

Multiple anchor rods are assembled with upper and lower templates to create a complete cage. This configuration improves installation accuracy for large column bases.

Bent Foundation Bolt

L-shaped and J-shaped bolts use the embedded bent section to improve anchorage in concrete. They are commonly used in steel workshops and prefabricated buildings.

U-Bolt Assembly

U-shaped bolts secure structural supports, pipes, equipment and other components to concrete or steel foundations.

Production and Inspection

Our production procedure is organized around the approved project drawing:

1. Review foundation and base plate drawings

2. Confirm bolt size and material

3. Cut steel rods to the required length

4. Roll or machine the threads

5. Bend, forge or weld the embedded end

6. Fabricate positioning templates and anchor plates

7. Trial-assemble nuts, washers and templates

8. Inspect dimensions and bolt spacing

9. Apply the specified surface treatment

10. Pack assemblies according to the installation sequence

Installation Recommendations

• Check bolt locations against the latest foundation drawing.

• Secure the positioning template before concrete placement.

• Verify bolt spacing, verticality and projection height.

• Protect exposed threads from concrete contamination.

• Recheck all dimensions before the concrete begins to set.

• Do not force a misaligned steel base plate onto the bolts.

• Install washers and nuts according to the project requirements.

• Complete final tightening after column alignment and grouting.

FAQ

Can you manufacture anchor bolts from our base plate drawing?

Yes. We can determine the required template hole layout and manufacture the anchor bolt assembly according to the approved base plate and foundation drawings.

Can anchor bolt cages be pre-assembled before delivery?

Yes. Depending on the dimensions and transportation requirements, bolt cages can be fully assembled, partially assembled or supplied as labeled components for site assembly.

How can bolt displacement during concrete placement be reduced?

Rigid positioning templates, temporary supports and proper fixing methods help maintain the designed bolt spacing, verticality and projection height.

Can exposed bolt sections be galvanized?

Yes. The entire bolt or only the specified exposed section can be protected according to the project requirements and manufacturing process.

Can you produce non-standard bolt diameters and lengths?

Yes. Non-standard dimensions, extended threads, special anchor plates and customized embedded ends can be manufactured according to drawings.

Can the anchor bolts be supplied with the steel columns?

Yes. Anchor bolts can be produced together with the column base plates and main steel structure to improve dimensional coordination.