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A2-70 Stainless Steel Hex Bolt Manufacturer, Supplier and Factory In China

Ningbo Teng Qi Fasteners Co., Ltd is a leading A2-70 stainless steel hex bolt manufacturer in China. A2-70 stainless steel is a grade of stainless steel that corresponds to the 304 grade in the Unified Numbering System (UNS). The “A2” designation indicates the steel’s corrosion resistance and its ability to withstand exposure to moderately aggressive environments, such as rural and urban atmospheres. The “70” refers to the minimum tensile strength measured in ksi (kilo-pounds per square inch), which translates to approximately 700 MPa in metric units.

A hex bolt made from A2-70 stainless steel would have these properties, making it suitable for applications where corrosion resistance and moderate strength are required, such as in outdoor or mildly corrosive environments.

A2-70 Stainless Steel Hex Bolt

Specification of A2-70 Bolt:

The specification of an A2-70 hex bolt refers to its specific dimensions, thread pitch, and other mechanical properties. Here’s what the designation “A2-70” signifies:

Product nameA2-70 Hex Bolt
Size:Metric: M1.6-M100
Imperial:0# to 4"
Length:Metric: Up to 800mm
Imperial: Up to 30"
Material:ASTM 304 stainless steel in the United States or 1.4301 in the European standard. This steel is composed of iron, 18% chromium, and 8% nickel, providing good corrosion resistance
Strength Grade: 700 MPa (min)
Head Type:Hex Head
Industry Standards:ISO/ASTM/ASME/DIN/UNI/JIS
Packaging:Boxes/cartons into wooden pallets
Application:Construction/Automotive/Marine/Aerospace/Food and Beverage Industry/Medical Equipment/Chemical Processing/Water Treatment

FAQ about A2-70 Hex Bolt:

1. Q: What is the minimum order quantity for A2-70 hex bolts?
A: The minimum order quantity is typically 500 kilograms. However, if we has items in stock, there might be no minimum order requirement.

2. Q: What is the lead time for A2-70 hex bolts bulk orders?
A: The lead time is usually around 35-40 days. The exact time may vary based on the supplier’s production capacity and order volume.

3. Q: Can you provide quality certifications and test reports for A2-70 hex bolts?
A: Yes, we can provide material certificates and test reports for A2-70 hex bolts to ensure quality and compliance with standards.

4. Q: What are the payment terms for bulk orders of A2-70 hex bolts?
A: Payment terms are typically 30%tt advance,70%tt against bill of lading.

5. Q: Is packaging customization available for bulk orders?

A: Yes, we often offer packaging customization options for bulk orders, allowing you to specify packaging requirements based on your shipping and storage needs.

Quality control of A2-70 Hex Bolt:

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.