Alloy Steel Forged Single & Double Lug Plug Fittings for Power Components

Product Overview :

Our Alloy Steel Forged Single and Double Lug Plug Fittings are designed to provide robust, reliable connections for power systems. Crafted from high-strength alloy steel, these fittings ensure exceptional durability and performance in demanding electrical applications.

Key Features :

• High-Quality Material: Made from premium alloy steel, offering excellent resistance to wear, corrosion, and mechanical stress.
• Precision Forging: Each fitting is meticulously forged to ensure precise dimensions and superior structural integrity.
• Versatile Configurations: Available in both single and double lug designs to accommodate various connectivity needs.
• Enhanced Conductivity: Engineered to provide optimal electrical conductivity, ensuring efficient power transmission.
• Easy Installation: Designed for straightforward installation, compatible with standard electrical components.

Material & Manufacturing

Product advantage

1. Superior Mechanical Strength & Durability

• Military-Grade Alloy Steel (AISI 4140/4340) provides ≥850 MPa tensile strength—30% stronger than stamped or cast alternatives.

• Precision Hot Forging ensures optimized grain flow, enhancing impact resistance and fatigue life in high-vibration environments (e.g., wind turbines, railways).

• Quenched & Tempered (HRC 28-32) for balanced hardness and toughness, preventing brittle fractures.

2. High Electrical Performance

• Low Resistance (≤0.2mΩ): CNC-machined contact surfaces ensure efficient current transfer, rated for up to 300A continuous load.

• 35kV Insulation Compatibility: Works with heat-shrink tubes or PVC sleeves for high-voltage applications (substations, renewable energy systems).

3. Corrosion & Wear Resistance

• Multiple Coating Options:

  • Hot-Dip Galvanized (1000+ hours salt spray resistance).

  • Tin-Plated (ideal for copper connections, prevents oxidation).

  • Passivated (chemical-resistant for industrial zones).

• Wide Temperature Range: Performs reliably from -30°C to +200°C.

4. Compliance & Reliability

• Certified: IEC 61238, UL 486A-B, and EN 50149 (railway standards).

• Rigorous QC: Spectrometer material checks + destructive load testing (each batch).

Primary Applications

These heavy-duty, high-conductivity plug accessories are engineered for secure power transmission in demanding electrical systems:

A. Energy Infrastructure

• Substation Connections: Busbar terminations, transformer lugs

• Renewable Energy: Solar farm combiner boxes, wind turbine generator terminals

• Battery Systems: EV charging stations, grid-scale energy storage

B. Industrial Power Distribution

• Motor Control Centers: High-current feeder connections

• Switchgear: Circuit breaker terminations

• Heavy Machinery: Mining equipment, crane power feeds

C. Transportation Electrification

• Railway Systems: Third rail connections, overhead catenary terminations

• Marine Applications: Shipboard power distribution

D. Commercial Construction

• Data Centers: Busway connections

• High-Rise Buildings: Main distribution panel terminations

Frequently Asked Questions (FAQ)

1. What are the key advantages of alloy steel forged lugs over standard lugs?

• 30% Higher Strength: Hot-forged alloy steel (AISI 4140/4340) provides ≥850 MPa tensile strength vs. 600 MPa for mild steel

• Superior Durability: Optimized grain structure resists vibration fatigue (ideal for wind turbines/railways)

• Precision Fit: CNC-machined to ±0.1mm tolerances for perfect cable-to-terminal contact

2. What surface treatments are available for corrosion protection?

• Hot-Dip Galvanized (HDG): 80μm coating, 1000+ hr salt spray resistance (coastal areas)

• Tin-Plated: Best for copper connections, prevents galvanic corrosion

• Bare Steel + Grease: Temporary solution for indoor dry environments

3.How should I store unused lugs?

• Short-term: Keep in original anti-tarnish packaging

• Long-term: Vacuum-seal with desiccant packs

• Never store with dissimilar metals to prevent galvanic corrosion

Thank you for your interest in our high-performance alloy steel forged lugs for power components. Whether you need technical specifications, pricing, or custom solutions, our team is ready to assist you.

Qingdao Sande Technology Co., Ltd. is located in Qingdao. We are specialized in manufacturing forging, CNC machining and various surface treatments. We have over 16 years of experience.
We have a professional and experienced team of engineers, advanced production and testing equipment, a powerful quality control system, and professional customer service... We will offer professional services, high-quality products and favorable prices. We sincerely welcome domestic and foreign customers to cooperate with us!