New Arrival: Full Range of High-Grade Stainless Steel Fasteners (A2-70/A4-80/2205 Duplex)

1. Product Launch Overview

We are proud to announce the official launch of our upgraded stainless steel fastener series, covering A2-70 (304)、A4-80 (316)、2205 duplex stainless steel bolts, nuts, washers, and screws. Designed for high-corrosion and high-strength scenarios, this lineup delivers stable mechanical performance, long-term corrosion resistance, and full-spec compliance with global standards (DIN/ISO/ANSI/GB).

2. Core Product Series & Highlights

️ A2-70 (304) Stainless Steel – Cost-Effective & Versatile

• Grade: A2-70 (18-8 stainless steel)

• Strength: Tensile strength ≥700MPa, hardness HV 200-230

• Features: Excellent rust resistance, non-magnetic, polished finish

• Specs: M3–M24, full lengths in stock; DIN 933/934, DIN 7991, ISO 4032

• Best For: General machinery, furniture, outdoor railings, and indoor assembly.

  

  304不锈钢螺栓螺母

A4-80 (316) Stainless Steel – Ultimate Corrosion Protection

• Grade: A4-80 (Mo-containing austenitic stainless steel)

• Strength: Tensile strength ≥800MPa, high fatigue resistance

• Features: Superior resistance to salt spray, acids, and chemicals; ideal for coastal and marine environments.

• Specs: M4–M20, standard & custom lengths; DIN 603, DIN 912, ANSI B18.2.1

• Best For: Marine engineering, chemical equipment, photovoltaic power stations, and coastal infrastructure.

  

  316不锈钢螺栓

⚙️ 2205 Duplex Stainless Steel – High Strength & Extreme Durability

• Grade: S31803 (2205 duplex, austenite + ferrite structure)

• Strength: Tensile strength ≥850MPa, yield strength ≥450MPa (2x 304/316)

• Features: Outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking.

• Specs: M6–M16, heavy-duty series; ISO 3506, GB/T 3098.18

• Best For: Offshore platforms, desalination plants, nuclear power, and high-pressure industrial equipment.

  

  2205双相不锈钢螺栓

3. Key Advantages of Our New Stainless Steel Line

• ✅ Premium Raw Material: Melting from reputable steel mills (304/316/2205), strict chemical composition control.

• ✅ Precision Manufacturing: CNC cold forging + thread rolling, tight tolerance (±0.02mm), no burrs.

• ✅ Rigorous Testing: 100% hardness, torque, and salt spray tests (A4-80: ≥1000 hours; 2205: ≥2000 hours).

• ✅ Full Stock & Fast Delivery: Regular sizes (M3–M24) in 3,000-ton warehouse; support small trial orders (100pcs) and bulk shipments.

• ✅ Custom Solutions: OEM/ODM available (special lengths, non-standard heads, laser marking, and unique packaging).

4. Application Scenarios

• New Energy: Photovoltaic brackets, wind turbine components, and energy storage cabinets (25-year service life).

• Marine & Coastal: Shipbuilding, offshore platforms, and seaside infrastructure (anti-salt corrosion).

• Chemical & Pharmaceutical: Pipeline flanges, reaction kettles, and equipment frames (acid/alkali resistance).

• Architectural & Decoration: Curtain walls, handrails, and stainless steel furniture (aesthetic & durable).

5. Why Choose Us for Stainless Steel Fasteners

• 15+ years of focus on stainless steel fastener R&D and production.

• Annual capacity: 10,000+ tons; export to 50+ countries (EU, Southeast Asia, Middle East, Australia).

• ISO 9001, CE, and RoHS certifications; third-party inspection reports available.

• Competitive factory pricing with stable quality; one-stop procurement for bolts, nuts, washers, and screws.

6. Conclusion

The new stainless steel fastener series (A2-70/A4-80/2205) combines high strength, corrosion resistance, and cost-effectiveness, meeting the growing demand for durable connections in extreme environments.

Whether you need standard stock items or custom-engineered solutions, our stainless steel fasteners deliver reliable performance and long-term value for your projects.