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A4-70 Stainless Steel Threaded Rod Manufacturer, Supplier and Factory In China

Ningbo Teng Qi Fasteners Co., Ltd is a leading A4-70 stainless steel hex bolt manufacturer in China. Ningbo Teng Qi Fasteners takes the lead as your go-to supplier for A4-70 threaded rods. We make sure these rods meet high standards in both chemistry and strength, ensuring excellent corrosion resistance. Covering sizes from small m3 to large m100, our threaded rods provide a simple and effective solution for various uses. We prioritize the quality of materials, making sure they stand up well against corrosion. Trust us for threaded rods that guarantee reliability and durability. we simplify your fastening needs with top-notch threaded rods, ensuring they deliver the performance you can count on.

A4-70 Stainless Steel Threaded Rod

Specification of A4-70 Threaded Rod:

The specification of an A4-70 stainless steel threaded rod refers to its specific dimensions, thread pitch, and other mechanical properties. Here’s what the designation “A4-70” signifies:

Product nameA4-70 Hex Bolt
Size:Metric: M3-M100
Length:Metric: Up to 6000mm
Strength Grade: 700 MPa (min)
Industry Standards:DIN975
Packaging:Boxes/cartons into wooden pallets
Application:Construction/Automotive/Marine/Aerospace/Food and Beverage Industry/Medical Equipment/Chemical Processing/Water Treatment

FAQ about A4-70 Stainless Steel Threaded Rod:

1. Q: Can A4-70 threaded rods be used in saltwater environments?
A: Yes, A4-70 stainless steel is designed to resist corrosion, making it an ideal choice for applications exposed to saltwater, such as marine constructions.

2. Q: What makes A4-70 stainless steel different from A2-70?
A: A4-70 contains molybdenum, enhancing its corrosion resistance compared to A2-70. It is better suited for harsher environments, like marine or chemical applications.

3. Q: Are A4-70 threaded rods suitable for high-temperature applications?
A: A4-70 stainless steel maintains its strength and corrosion resistance at elevated temperatures, making it suitable for various environments, including those with higher temperatures.

4. Q: Do you offer A4-70 threaded rods in custom lengths?
A: Yes, we provide customization options, allowing you to order A4-70 threaded rods in specific lengths tailored to your project’s requirements.

5. Q: Can A4-70 threaded rods be used in contact with other metals?

A: A4-70 stainless steel is compatible with various metals, reducing the risk of galvanic corrosion when in contact with dissimilar materials.

Quality control of A4-70 Threaded Rod:

Control MethodDetail
Material Inspection:Verify the material's composition, heat treatment, and quality upon receipt. Conduct metallurgical analysis to ensure the material properties meet the standards.
Process Control:Implement strict process control measures for heat treatment, machining, threading, and any other manufacturing steps. Maintain consistent process parameters to ensure uniform quality.
Inspection Points:Introduce inspection points at various stages of manufacturing to check for defects, dimensions, and quality. Inspect threading, dimensions, surface finish, and other critical parameters.
Sampling and Testing:Regularly sample products for testing, such as tensile testing, hardness testing, and metallurgical analysis, to ensure they meet the required specifications.
Thread Inspection:Thoroughly inspect threading using proper thread gauges to ensure accurate dimensions and fit with mating components.
Traceability:Implement a traceability system to track each fasteners journey from raw material to final product. This aids in accountability and recalls if necessary.