OVERVIEW
AUTOMOTIVE SPRINGS COMPANY
Automotive Leaf Spring Manufacturing Company (under THACO INDUSTRIES) specializes in manufacturing and supplying leaf spring assemblies for a wide range of vehicles. This includes multi-leaf springs for light trucks, medium-duty trucks, heavy-duty trucks, semi-trailers, and aftermarket applications.
Leaf springs are produced on an advanced technology production line with an automated system of machinery and equipment, and utilizing materials along with a design and inspection process in accordance with Japanese standards (JIS G 4801; JIS B 2710; JASO C 601 & JASO C 604), the company's products are of high quality, ensuring elasticity, durability, good load capacity, and smooth operation while meeting the requirements for operation on various terrains. In addition to serving the domestic market, the company has exported products to the USA, Canada, Australia, Germany, Dominica, South Korea…
Leaf springs are produced on an advanced technology production line with an automated system of machinery and equipment, and utilizing materials along with a design and inspection process in accordance with Japanese standards (JIS G 4801; JIS B 2710; JASO C 601 & JASO C 604), the company's products are of high quality, ensuring elasticity, durability, good load capacity, and smooth operation while meeting the requirements for operation on various terrains. In addition to serving the domestic market, the company has exported products to the USA, Canada, Australia, Germany, Dominica, South Korea…
2015
Establishment year
25 million USD
Investment capital
12,000 tons/year
Capacity
PRODUCTS
Multi-leaf springs for truck 
Multi-leaf springs for semi-trailers 
Aftermarket leaf springs Multi-leaf springs for truck
The company manufactures and supplies OEM multi-leaf springs for light, medium, and heavy trucks from brands such as Kia, Isuzu, and Foton. The product matches the quality of springs produced in Korea.
Multi-leaf springs for semi-trailers
The company manufactures and supplies multi-leaf springs for semi-trailers, including 3-leaf, 4-leaf, 7-leaf, and 9-leaf springs. These springs offer advantages such as high durability, excellent load-bearing capacity, and smooth operation.
Aftermarket leaf springs
The company manufactures and supplies a variety of leaf springs for after-sales service, including straight leaf springs, eye-rolling leaf springs, tapering leaf springs, and tapering - end trimming - hole punching leaf springs. Additionally, the company produces according to the specific requirements of its partners.
PRODUCTION LINE
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Product Research & Development
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Material Preparation
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Workpiece Process
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Heating Treatment Process
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Shot Peening Process
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Dipping Paint Process
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Assembly Process
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Finishing Paint Process
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Quality Control
Product Research & Development
Based on customer requirements:
- Gathering input information.
- Calculating and selecting the leaf spring structure.
- Designing the leaf spring using NX software.
- Simulating and calculating strength using HyperWorks software.
CERTIFICATES
The company has obtained certification for the Quality Management System IATF 16949:2016, ISO 9001:2015 and the Environmental Management System ISO 14001:2015. The products meet the strict standards of both domestic and export customers.
PARTNERS
MACHINERY & TECHNOLOGY
TAPERING LINE
Capacity: 900 units/8 hours
Tapering length: Max 800mm
Equipment type: Hydraulic
Tapering length: Max 800mm
Equipment type: Hydraulic
EYE ROLLING LINE
Capacity: 600 units/ 8 hours
Eye diameter: Max. 100mm
Equipment type: Hydraulic
Eye diameter: Max. 100mm
Equipment type: Hydraulic
SHOT PEENING LINE
Capacity: 3,500 units/8 hours
Centrifugal shot blasting machine
1 mm diameter steel shots are used.
Centrifugal shot blasting machine
1 mm diameter steel shots are used.
HEAT TREATMENT LINE
Capacity: 2,200 units/8 hours
Use error-proofing
Control type: P.I.D control
Use error-proofing
Control type: P.I.D control
ASSEMBLY LINE
Capacity: 450 sets/8 hours
Max. clamping force: 7 tons
Max. test load: 20 tons
Max. clamping force: 7 tons
Max. test load: 20 tons
TOP PAINTING LINE
Painting thickness: Min. 30 micromet
Method: Automatic spray
Marking by Robot
Method: Automatic spray
Marking by Robot
OUR MARKETS
Korea, United States, Canada
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United States
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Korea
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Canada
WHY THACO INDUSTRIES IS A TRUSTED LEAD SPRINGS MANUFACTURER?
As a pioneer in technological innovation and automation, Automotive Leaf Spring Manufacturing Company (under THACO INDUSTRIES) is committed to developing smart factory models across its manufacturing ecosystem and has invested in a modern, highly automated production line, achieving an automation level of up to 85%, thereby enhancing productivity, quality consistency, and operational efficiency.
Products have the same quality level as leaf springs made in Korea, with the advantages of elasticity matched with each model, high durability, good loading capacity, smooth operation, meet the requirements of operation on many terrains and are exported to the USA, Canada, Australia, Germany, Dominica, South Korea…
