Cold Heading Non-Standard Parts

The stainless steel cold-bending hexagonal double-ended screw is a fastener with threads at both ends and a smooth middle section. It is formed through the cold-bending process and features high precision and strength. The material is usually 304 or 316 stainless steel, which has strong corrosion resistance and is suitable for harsh environments such as those in the chemical, shipbuilding, and food machinery industries. Its hexagonal design facilitates the installation of a wrench, and the double-ended threaded structure is suitable for thick plate connections or situations requiring frequent disassembly, such as mechanical seal seats and reducer frames. The cold-bending process ensures the accuracy of the threads and the surface finish, conforming to standards like GB/T 901, and its mechanical performance can reach grades A2-70/A4-80, combining durability with convenience.

 

Product Features:

High-strength material: Made of 304/316 stainless steel, it has corrosion resistance and high-temperature resistance.

Precise cold heading process: Through cold heading, the thread accuracy is high, the surface is smooth, the structure is tight, and the tensile strength and fatigue resistance are superior to ordinary cutting processes.

Double-ended thread design: Both ends can be connected with nuts or pre-embedded fixations, suitable for thick plate butt joints, mechanical seals, bridge steel structures, etc., which require frequent disassembly or adjustment.

Hexagonal head structure: The hexagonal head facilitates the installation of wrenches, provides a larger torque contact surface, prevents slipping, and ensures stable and efficient installation.

Wide applicability: The size range is wide (M5-M64), in line with standards such as GB/T 901, suitable for chemical industry, shipping, food equipment, and construction fields.

Economical and durable: The cold heading process reduces material waste, has low production costs for batch production, and the stainless steel material ensures no rusting for long-term use.

 

Application fields:

Chemical equipment: Used for fastening connections in corrosive environments such as reaction vessels, pipe flanges, pumps and valves, with 304/316 stainless steel material that resists acid and alkali corrosion.

Marine and offshore engineering: Applicable to ship structures, deck machinery, seawater treatment systems, etc., resistant to salt fog corrosion, meeting requirements for marine environments.

Food and pharmaceutical machinery: Due to the non-toxic and corrosion-resistant nature of stainless steel, it is often used for hygiene-level connections in food processing equipment, filling lines and pharmaceutical machinery.

Power and energy equipment: Used for boiler steel structures, pressure vessels, wind power equipment, etc. in high-temperature and high-pressure environments, with 316 stainless steel having excellent high-temperature performance.

Construction and bridge engineering: Applicable to concrete roof trusses, large-span steel structures and bridge suspension components, with a double-head design facilitating thick plate connections.

Railway transportation and automotive manufacturing: Used in vibrating areas such as high-speed rail carriages, subway carriages and automotive engine brackets, with cold heading process ensuring high strength and anti-loosening.

Heavy machinery and mining equipment: In reducers, crushers and other equipment, double-head screws facilitate frequent disassembly and maintenance, reducing thread wear.

 

FAQ

Q1: What are the advantages of the cold heading process?

A: The cold heading process ensures the integrity of metal fibers, enhancing the product's strength (10-20% higher than the cutting process), resulting in a smoother surface, more precise dimensions, and a material utilization rate of over 90%.

 

Q2: What are the special applications of the double-head design?

A2: The double-head design is convenient for thick plate connections. One end can be pre-installed and fixed, while the other end is used for installation and adjustment. It is particularly suitable for scenarios requiring frequent disassembly and maintenance, such as mechanical equipment and bridge structures.

 

Q3: Can special sizes be customized?

A3: Customization is supported, including special lengths and thread specifications, but detailed technical parameters must be provided.

Non-Standard Carbon Steel Parts

316 Non-Standard Parts

304 Non-Standard Parts

304 Stainless Steel Non-Standard Parts

Custom-Made Non-Standard Stainless Steel Parts

Non-Standard Stainless Steel Parts