Qingdao Hailong Machinery Technology Co., Ltd. is one of the leading manufacturers and suppliers of automotive housings in China, featured by quality products and good service. Welcome to buy durable automotive housings made in China here and get pricelist from our factory. Also, customized service is available.
Core Product Features
Diversified Materials & On-demand Adaptation
Optional high-strength carbon steel (Q235B/Q355B), alloy structural steel (20CrMnTi/40Cr), lightweight aluminum alloy (6061-T6/5052-H32), carbon fiber composite materials to meet different vehicle requirements. Carbon steel frames have tensile strength ≥355MPa and yield strength ≥235MPa, suitable for heavy-duty commercial vehicle scenarios; aluminum alloy materials reduce weight by 30%-40%, improving fuel economy and cruising range of new energy vehicles; carbon fiber materials reduce weight by more than 50%, suitable for high-end passenger cars, combining strength and lightweight advantages.
Ergonomic Design & Comfortable Support
Based on human sitting posture data collection and simulation optimization, adopt curved backrest frame + adjustable seat cushion frame design, fitting the human spine curve and dispersing body pressure; support multi-directional adjustment of seat forward/backward, height, backrest angle, with precise adjustment stroke, adapting to users of different heights and body types, no fatigue after long-term riding.
Structural Optimization & Safe Reliable
As the core of seat safety, the frame adopts multi-weld reinforcement + integrated reinforcing rib structure, torsional rigidity increased by 35%, compressive strength up to 2000N/m²; integrates seat belt fixed points and airbag installation positions, which can disperse impact force during collision, protect passengers' bodies, and pass the national collision safety certification (C-NCAP) five-star standard.
Precision Manufacturing & Strong Adaptability
Adopt CNC stamping, bending, robotic welding, forging and other processes, combined with 3D scanning modeling and finite element analysis, dimensional accuracy up to ±0.2mm, mounting hole error ≤0.3mm; perfectly compatible with seat foam, skin, and adjustment mechanisms, covering all models such as sedans, SUVs, MPVs, light trucks, heavy trucks, supporting manual/electric seat adaptation.
Durable & Stable Performance
The surface is treated with multiple protections, carbon steel parts adopt pickling phosphating + electrophoresis + spraying triple coating, no rust after 1000 hours of salt spray test; aluminum alloy parts are anodized, corrosion resistance increased by 40%; all frames pass 100,000 times adjustment fatigue test and 50,000 times collision simulation test, service life up to more than 15 years, no deformation or loosening hazards.

Core Process Advantages
Precision Manufacturing Technology
Carbon steel frames adopt robotic welding process, welds are uniform and full, welding strength reaches more than 95% of base metal, no false welding or missing welding defects; aluminum alloy frames adopt extrusion molding + CNC finishing, surface smooth and burr-free, high structural accuracy; carbon fiber frames adopt compression molding process, uniform fiber distribution and strong mechanical performance consistency.
Surface Treatment Process
Carbon steel parts go through five-step process of degreasing → pickling → phosphating → electrophoresis → spraying, coating adhesion reaches level 1 (cross-cut method), hardness ≥2H, scratch-resistant and anti-aging; aluminum alloy parts adopt hard anodization, film thickness ≥12μm, wear-resistant and corrosion-resistant; carbon fiber parts adopt epoxy resin coating, waterproof and moisture-proof, with excellent appearance texture.
Full-process Quality Control
Raw materials undergo material spectral analysis, tensile strength test and impact test; the production process real-time monitors welding quality, dimensional accuracy and flexibility of adjustment mechanism; finished products pass static load test, dynamic fatigue test, salt spray corrosion test and collision safety test. Complete test reports are provided for each batch with traceable quality.

Application Scenarios
Passenger Car Supporting
Front and rear seat frames for sedans, SUVs, MPVs and other passenger cars, emphasizing comfort and safety performance, adapting to manual/electric adjustment seats.
Commercial Vehicle Supporting
Driver and passenger seat frames for light trucks, heavy trucks, buses and other commercial vehicles, adapting to long-distance driving scenarios, emphasizing support and durability, and can integrate shock absorption functions.
New Energy Vehicle Supporting
Seat frames for pure electric, hybrid and hydrogen energy vehicles, lightweight design improves cruising range, adapting to the adjustment needs of intelligent cockpit seats.
Automotive Modification & Upgrade
Customized seat frames for modification factories, supporting sports seats, racing seats, multi-function adjustment seats, meeting personalized needs.
Special Vehicle Supporting
Special seat frames for ambulances, RVs, engineering vehicles and other special vehicles, integrating medical equipment fixed positions and multi-function adjustment functions, adapting to special usage scenarios.

Typical Application Cases
New Energy Passenger Car - Electric Seat Frame
Customized electric seat frame for a well-known new energy vehicle enterprise, adopting 6061-T6 aluminum alloy material, weight reduction 32%, integrating 8-way electric adjustment mechanism + airbag installation position, passing C-NCAP five-star collision certification, has been batch supporting the brand's flagship models, market failure rate less than 0.08%.
Commercial Vehicle Heavy Truck - Driver Seat Frame
Supplied driver seat frame for a heavy truck enterprise, adopting Q355B carbon steel + reinforcing rib structure design, adapting to air shock absorption seats, torsional rigidity increased by 40%, passing 100,000 times adjustment fatigue test, meeting long-distance heavy-load driving needs, batch supporting more than 300,000 units.
High-end Passenger Car - Carbon Fiber Seat Frame
Customized carbon fiber seat frame for high-end SUVs, adopting T700 grade carbon fiber composite material, weight reduction 55%, integrating sporty backrest design, combining lightweight and support, becoming a best-selling product in the high-end modification market, suitable for a variety of luxury models.

Quality Assurance
Test Reports
Provide raw material quality reports, dimensional accuracy test reports, welding quality test reports, load test reports, fatigue test reports, collision safety test reports, etc.
After-sales Commitment
For non-human damage, carbon steel frames are warranted for 3 years, aluminum alloy frames for 5 years, carbon fiber frames for 8 years; free replacement for quality problems such as deformation, cracking, rust, adjustment failure during the warranty period; professional technical team is online 24/7 to provide installation guidance and technical support.
Quality Standards
Strictly follow industry standards such as GB 15083 "Strength Requirements and Test Methods for Automotive Seats, Seat Anchorages and Head Restraints", ISO 6406 "Performance Requirements for Automotive Seat Systems", GB/T 10125 "Artificial Atmosphere Corrosion Testing - Salt Spray Testing".

Main Technical Specifications (Standard Models)
|
Parameter Type |
Specification Range |
|
Material Type |
Carbon Steel (Q235B/Q355B), Alloy Structural Steel (20CrMnTi/40Cr), Aluminum Alloy (6061-T6/5052-H32), Carbon Fiber Composite |
|
Core Performance |
Tensile Strength ≥355MPa (Carbon Steel);Weight Reduction 30%-55% (Aluminum/Carbon Fiber);Compressive Strength ≥2000N/m² |
|
Surface Treatment |
Carbon Steel: Electrophoresis + Spraying;Aluminum Alloy: Anodization;Carbon Fiber: Epoxy Resin Coating |
|
Precision Requirement |
Dimensional Accuracy ±0.2mm;Mounting Hole Error ≤0.3mm;Welding Strength ≥95% of Base Metal |
|
Durability Performance |
Salt Spray Test 1000 Hours No Rust;Adjustment Fatigue Life ≥100,000 Cycles;Collision Safety C-NCAP Five-star Standard |
|
Adaptable Vehicles |
Passenger Cars, Commercial Vehicles, New Energy Vehicles, Special Vehicles (Customizable Adaptation) |
|
Adaptable Seat Types |
Manual Seats, Electric Seats (6/8/12-way Adjustment), Sports Seats, Shock Absorption Seats, Modified Seats |
Process

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