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ZSJH
High Strength Bolts are high-performance structural fasteners designed for reliable connections between steel members in demanding construction and engineering applications. They are widely used to connect steel columns, steel beams, H-sections, structural frames, bracing systems, connection plates, end plates, and other structural steel components.
Compared with standard fastening bolts, high strength structural bolts are designed for applications requiring higher mechanical performance, controlled tightening, and dependable load transfer. They are commonly used in steel structure buildings, industrial workshops, warehouses, commercial buildings, bridges, infrastructure projects, and heavy-duty structural steel applications.
We manufacture and supply high strength bolts in a wide range of sizes, strength grades, configurations, and surface finishes. Products can be supplied as individual bolts or complete bolt assemblies with nuts and washers, according to project specifications.
We can supply different types of high strength structural bolts according to the connection design and project requirements.
Heavy hex head structural bolts provide a large bearing surface and are widely used for structural steel connections. They can be supplied with matching structural nuts and hardened washers.
Designed for high-load steel connections where reliable mechanical performance and structural stability are required.
High tensile bolts are suitable for applications requiring high tensile strength and reliable resistance to working loads.
Complete connection sets can include high strength bolt + structural nut + washer, providing a convenient solution for steel structure fabrication and erection.
Bolt type and assembly configuration can be customized according to engineering drawings, applicable standards, and project requirements.
High Strength Bolts are manufactured from carefully selected high-strength carbon steel or alloy steel, depending on the required mechanical properties and application.
Available strength grades may include commonly specified grades such as:
Grade 8.8
Grade 10.9
Other grades according to project specifications
For international projects, products can be manufactured according to the required technical standard and grade. The actual material grade and mechanical properties should be confirmed according to the customer's engineering specification and applicable standard.
High Strength Bolts are available in customized dimensions to meet different structural steel connection requirements.
| Specification | Available Options |
|---|---|
| Bolt Diameter | Customized |
| Bolt Length | Customized |
| Thread Diameter | Metric / Imperial |
| Thread Type | Full Thread / Partial Thread |
| Strength Grade | According to Project Requirements |
| Head Type | Hex Head / Heavy Hex Head |
| Nut Type | Matching Structural Nut |
| Washer | Flat / Hardened Washer |
| Surface Treatment | Plain / Black / Zinc Plated / Hot-Dip Galvanized |
| Standard | ASTM / DIN / EN / JIS / GB / Customized |
| Assembly | Bolt + Nut + Washer |
| Customization | Available |
Common dimensions can be supplied for standard structural applications, while non-standard sizes and project-specific configurations can also be manufactured according to drawings and technical requirements.
Different surface treatments are available to meet various environmental and corrosion-resistance requirements.
Suitable for standard indoor or protected structural applications where additional corrosion protection is not required.
Provides additional surface protection and is suitable for selected general fastening applications.
Provides enhanced corrosion protection for applications exposed to moisture, outdoor environments, or demanding service conditions.
The appropriate surface treatment can be selected according to the project environment, design requirements, and customer specifications.
High Strength Bolts are widely used in structural steel and heavy-duty construction projects, including:
Steel Structure Buildings
Steel Warehouses
Industrial Workshops
Commercial Buildings
Steel Columns and Beams
H-Beam and H-Section Connections
Structural Steel Frames
Steel Bracing Systems
Connection Plates and End Plates
Steel Bridges
Infrastructure Projects
Heavy-Duty Structural Applications
They are particularly suitable for structural connections where high mechanical strength, reliable fastening, and long-term structural stability are required.
Designed for demanding structural applications requiring high tensile and shear performance.
Provides secure fastening between structural steel members when correctly specified and installed.
Available in different diameters, lengths, thread configurations, strength grades, and surface finishes.
Bolts can be supplied together with matching nuts and washers to simplify purchasing and installation.
Dimensions, grades, thread configurations, surface treatments, and packaging can be customized according to engineering requirements.
Products can be supplied according to applicable international or project-specific standards, subject to technical confirmation.
ZSJH Steel Structure is a steel structure manufacturer and supplier with experience in structural steel fabrication and related steel connection components. We understand how fastening products are used in real steel structure projects, allowing us to provide products based on actual engineering requirements rather than standard hardware specifications alone.
We support customized production based on engineering drawings, BOMs, technical specifications, dimensions, material grades, and project standards.
In addition to high strength bolts, we can supply matching nuts, washers, anchor bolts, and other steel structure connection accessories, helping customers simplify sourcing and project procurement.
Production is carried out according to confirmed technical specifications, with attention to dimensions, thread accuracy, surface condition, material requirements, and packaging quality.
Products are prepared for international shipment with export-appropriate packaging and can be supplied according to the customer's destination-market and project requirements.
For customers sourcing complete steel structure projects, we can coordinate structural steel fabrication together with related connection components, providing a more efficient procurement solution.
Quality requirements can be confirmed according to the project specification before production. Depending on customer requirements, inspection and documentation may cover:
Material and grade verification
Dimensional inspection
Thread inspection
Surface condition inspection
Mechanical property requirements
Nut and washer matching
Packing and quantity verification
Inspection documentation according to project requirements
For projects with specific certification, testing, or third-party inspection requirements, these requirements can be discussed and confirmed before production.
High Strength Bolts are securely packed to reduce the risk of damage, contamination, and moisture exposure during transportation.
Packaging options can include:
Cartons
Wooden Cases
Pallets
Bulk Packing
Customized Export Packaging
Packaging, labeling, quantity per package, and shipping marks can be customized according to customer requirements.
Whether you need high strength structural bolts, heavy hex bolts, high tensile bolts, or complete structural bolt assemblies, we can provide customized solutions based on your project requirements.
Send us your engineering drawings, bolt schedule, dimensions, required standard, material grade, quantity, and surface treatment requirements. Our team can review the specifications and provide a suitable quotation and production solution.
ZSJH Steel Structure — Reliable Steel Structure Components for Global Projects.
