Product Name: Fourth-Grade Nitrided Black Office Chair Gas Lift

Grade: Fourth Grade (Class 4 certified)

Surface Treatment: Nitrided black finish

Color: Matte black

Material: High-strength steel

Rotation: Full 360° Swivel

Lift Stroke: 100mm (customizable 80mm–120mm)

Outer Diameter: 50mm

Inner Diameter: 28mm

Load Capacity: 180kg

Explosion-Proof: Multi-layer anti-explosion safety valve

Installation: Easy, tool-free

Compatibility: Office chairs, gaming chairs, task chairs

Sealing System: High-efficiency leak-proof seals

Gas Type: Pure nitrogen

Corrosion Resistance: Nitrided anti-rust coating

Pressure Resistance: 1500 PSI

Performance: Smooth and silent lift

Durability: 100,000+ cycles

Noise Level: ≤15dB

Gas Tightness: Zero leakage

Temperature Range: -20°C ~ 60°C

Safety Feature: Internal safety lock

Base Interface: Universal 28mm/50mm

Weight: ~1.1kg

Maintenance: Maintenance-free

Weld Technology: Precision robotic welding

Safety Certification: BIFMA / SGS / TUV

Use Case: Office, gaming, home, enterprise chairs

Anti-Fingerprint: Good smudge resistance

Shock Resistance: Internal drop protection

Plating Type: Industrial-grade nitrided coating

Packaging: PE sleeve + reinforced box

Eco Standard: ROHS-compliant

Visual Appeal: Sleek black executive look

Operation: Single-handed height adjustment