introduction
Established in 2009, Hangzhou Jinma Pipe Industry Co., Ltd. is a technology-driven manufacturer dedicated to the research and development, precision production, and global sales of automotive exhaust systems. Headquartered in Liangzhu Subdistrict, Yuhang District, Hangzhou, Zhejiang Province, China, the company boasts over a decade of in-depth expertise in the automotive exhaust pipe industry.
We have established a comprehensive full-process production system encompassing pipe forming, precision welding, surface anti-corrosion treatment and exhaust assembly, enabling one-stop integrated services from raw material processing to finished product delivery. As a qualified Tier 2 supplier for mainstream domestic automakers, we have maintained long-term and stable cooperative relationships with Chery Automobile and Geely Automobile, and provide professional supporting services for leading auto parts enterprises including Jiefeng and Baolong.Our product portfolio covers SUVs, sedans, heavy-duty trucks and new energy hybrid vehicles, compatible with mainstream engine displacement specifications. Additionally, we have developed a full line of high-performance exhaust products for vehicle modification scenarios.
The company has passed the IATF 16949 Automotive Quality Management System full-process certification. All production and inspection procedures are strictly implemented in compliance with international automotive manufacturing standards to ensure consistent product quality and reliability.
We hold more than 10 nationally authorized patents in exhaust pipe structural design, pipe forming and precision welding technologies. Meanwhile, we have independently mastered core technologies in special-shaped pipe bending, thin-walled pipe processing and muffler cavity development, forming unique technical advantages in the industry.
The company adopts a dual-track market strategy covering domestic and overseas businesses. We firmly consolidate our domestic OEM supporting business while actively expanding overseas markets across Europe, America and Southeast Asia. We also deliver customized integrated exhaust system solutions for the global automotive modification market, steadily elevating the international brand influence of Jinma.
Looking ahead, Hangzhou Jinma Pipe Industry will remain focused on the precision manufacturing of automotive exhaust systems. We will further increase R&D investment in exhaust products for new energy hybrid vehicles and high-performance modified vehicles, and continuously optimize automated production lines and quality management systems. Adhering to reliable quality, efficient delivery and professional technical support, we strive to become a long-term trusted core supplier of exhaust systems for domestic and foreign OEMs as well as the automotive modification industry.
Intelligent Manufacturing Production Line
The company is fully equipped with a complete suite of automated professional processing equipment and standardized assembly lines. The complete manufacturing workflow consists of 10 core working procedures:
Raw Material Incoming Inspection
Carry out comprehensive inspections including spectrometric material composition analysis, wall thickness measurement, appearance examination and dimensional verification on stainless steel strips, pipes and flanges. stainless steel serves as the primary raw material.
Stamping & Forming
Adopt closed single-point precision punching machines to complete steel plate punching and sheet metal prefabrication processes.
Pipe Forming & Welding
Utilize fully automatic pipe mills for pipe coiling and continuous TIG welding. Weld seam tracking equipment monitors the whole welding process to stabilize welding performance consistently.
CNC Laser Pipe Cutting
Implement laser precision cutting to trim pipes to designed lengths, ensuring high assembly accuracy.
Automatic Pipe Bending Production Line
Fully automatic CNC pipe benders fabricate multi-angle special-shaped bent pipes with precise control over roundness and bending angles. Robotic arms automatically pick workpieces, followed by full-automatic laser cutting, pre-forming, sizing as well as pipe expansion/reduction shaping to standardize pipe end dimensions. The fully automated workflow guarantees uniform finished product specifications.
Hydraulic Forming
Four-column hydraulic presses perform expansion and reduction forming for special-shaped pipes and muffler housings.
Comprehensive Finished Product Performance Testing
Conduct multi-dimensional performance tests including air tightness, burst resistance, fatigue resistance, neutral salt spray corrosion resistance, tensile strength, flattening property and vibration durability.
Final Pre-delivery Inspection
Recheck finished products in terms of appearance, dimensional tolerance and marking. Qualified goods are labeled with exclusive traceability codes before warehousing and shipment.
Our full set of specialized manufacturing equipment covers closed single-point precision punch presses, automatic pipe bending production lines, CNC laser pipe cutters, four-column hydraulic presses, pneumatic pipe cutters and fully automatic pipe forming workstations. A standardized mold warehouse for pipe production is matched on-site, enabling rapid production switching among various product specifications.
Strict Quality Control System
We build a full-link traceable quality control system covering the whole industrial chain from raw materials to finished products:
In-process Patrol Inspection: Dedicated inspectors assigned to each process, hourly patrol inspection with complete records retained.
100% Full Inspection for Finished Goods: All delivered products pass dimensional measurement, air tightness pressure test and appearance defect inspection.
Sampling Re-inspection Before Shipment: Sampling re-inspection in accordance with OEM standards to verify durability under simulated vehicle working conditions.
Single Product Traceability: Each product is attached with an independent traceability code to trace raw material batches, production teams and processing time reversely.
8 Major Reliability Lab Test Items
○Spectral composition analysis of raw materials
○Pipe flattening & flaring performance test
○Tensile and yield strength mechanical test of pipes
○Crimp strength & pull-off force test for flexible joints
○100% pressure holding air tightness leakage test
○Neutral salt spray anti-corrosion durability test
○Vibration durability test simulating real vehicle operating conditions
Delivery & Service Support
Large-scale Production Capacity
Automated production lines support mass synchronous production, fully complying with OEM JIT just-in-time delivery requirements.
24-hour Rapid Response
Dedicated customer service team provides all-day support for technical communication, delivery coordination and after-sales problem solving.
Customized Service Flexibility
We support drawing customization, sample development, small-batch trial production and mass production to meet the R&D demands of new vehicle models and differentiated requirements of modification brands.
Global Supporting Service
We supply matching products for mainstream passenger vehicle brands domestically, and provide door-to-door delivery and localized drawing adaptation services for overseas clients.