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A steel frame is more than its beams and columns. The connections between those members are an essential part of the structure, and the fasteners must match the requirements of each joint.
High strength bolts are used where the approved design calls for structural bolting. Their selection brings together the bolt system, material properties, dimensions, matching components and installation requirements. Evaluating these elements together helps keep the fastener specification consistent with the fabricated steelwork.
For new industrial buildings, platforms and structural extensions, ZSJH Steel welcomes enquiries that combine steel member drawings with the related connection requirements.
Bolts may connect beam sections through splice plates or form part of an end-plate connection. The required bolt arrangement and dimensions are defined by the approved detail.
Where a column splice is designed as a bolted joint, the specified fasteners connect the relevant splice components. Each item should correspond to the column connection schedule.
High strength bolts may be specified at bracing connections involving gusset plates. Assembly requirements must follow the connection design rather than being copied from other joints in the building.
Industrial platforms, mezzanines and equipment-supporting structures can include bolted connections where the structural design permits them.
The bolt, nut and required washers are considered together, with component compatibility defined by the selected system.
Diameter, length, thread configuration and strength class are selected against the engineering requirements.
Surface treatment is reviewed as part of the fastener specification, considering the assembly system and service environment.
Specify the relevant product identification, inspection records and acceptance documents before ordering.
This table describes the information required for product selection. Actual supply options must be confirmed for the project.
| Item | Specification Basis |
|---|---|
| Product Name | High strength structural bolt |
| Assembly Type | As identified in the project connection specification |
| Steel Material | Material requirements of the selected product standard |
| Strength Class | Specified by the responsible structural engineer |
| Bolt Diameter | According to the approved fastener schedule |
| Bolt Length | Selected for the connection and assembly configuration |
| Thread Form | As required by the applicable product standard |
| Nuts and Washers | Compatible components for the specified bolting system |
| Surface Treatment | Approved finish for the selected grade and assembly |
| Product Documentation | Reports and conformity documents agreed in the order |
A clear enquiry should identify both the fastener and its intended connection. Along with the bolt list, include relevant drawing references, revision numbers and any special inspection requirements.
Where connection plates are also required, provide their drawings with the bolt schedule. This allows the proposed supply to be reviewed as a connected set of components.
If the drawings change during procurement, highlight the affected connection references so the corresponding bolt quantities and dimensions can be rechecked.
Not automatically. Diameter alone does not establish compatibility. The bolt system, strength class, length, threads, finish and matching components must also satisfy the project specification.
Do not make that substitution without approval from the responsible engineer. A different grade may affect the required assembly and installation specification.
No. The finish is part of the fastener specification. It must be compatible with the selected grade, components and installation requirements.
Yes. Send the plate drawings and corresponding bolt schedule together so that the combined supply scope can be reviewed.
Provide the engineer-approved details for the proposed connections and the relevant information about the existing structure. Fastener selection should follow that design.
State the product conformity documents and test reports required by your project. Confirm that the agreed documentation applies to the supplied fasteners, rather than relying only on general company certificates.
Bring the steel members, connection plates and fasteners into one clearly defined enquiry.
Contact ZSJH Steel with your drawings, bolt schedule and project requirements to discuss high strength bolts for beam, column and bracing connections.
