Core technical parameters
| Project | Details |
| Product Name | Aluminum alloy die-cast bracket |
| Base material | ADC12 die-cast aluminum alloy (optional 6061 forged aluminum alloy / AlSi10Mg high-toughness alloy, custom available upon request) |
| Die-casting process parameters | Cold chamber die-casting, die-casting temperature 650 ± 10℃, mold preheating temperature 200 ± 20℃, clamping force ≥ 800T |
| Size accuracy | Overall size tolerance ± 0.05mm, coaxiality of installation holes ≤ 0.03mm, tolerance of hole spacing ± 0.02mm |
| Surface treatment process | Standard: silver-gray anodizing (film thickness 15-20μm); optional: matte spray painting, passivation anti-rust, color electroplating |
| Mechanical performance indicators | Compressive strength ≥ 220MPa, yield strength ≥ 160MPa, hardness ≥ 80HB, impact toughness ≥ 3J/cm² |
| Environmental adaptability | Salt spray corrosion resistance test ≥ 480h (neutral salt spray), temperature range - 40℃~120℃ |
| Compatible system & installation specifications | Compatible with Shur-Co STT-75-558 tarpaulin system; equipped with M10×1.5 installation screw holes (2, spacing 50 ± 0.02mm) |
The core advantages of Aluminum alloy die-cast bracket
Upgrade of integrated structural strength
One-time casting completes the "connection tube + mounting base + triangular reinforcement rib" entire structure, without welding / splicing gaps. Compared to the separate welded bracket, the overall torsional strength is increased by 35%, avoiding the risk of structural cracking caused by long-term vibration.
High-precision molds ensure compatibility
Developed with P20 mold steel, the dedicated casting molds have their cavities precisely machined by CNC + EDM electrical discharge machining, with an accuracy control of ±0.02mm; equipped with a three-coordinate measuring instrument (with an accuracy of ±0.005mm) for full inspection of the first piece, the size consistency of mass production reaches 99.8%, achieving "zero gap assembly" with the original factory tarpaulin system.
Lightweighting + cost optimization
Aluminum alloy material reduces weight by 42% compared to traditional Q235 steel brackets (single-piece net weight ≤ 1.2kg), reducing the operational load and fuel consumption of the vehicle; the batch production efficiency is 6 times that of machining, and the unit production cost is reduced by 20%.
Batch production stability guarantee
Equipped with 400T/800T fully automatic cold chamber casting machines, combined with robot picking + automatic deburring equipment, the daily production capacity per shift is ≥ 600 pieces; during the production process, size/hardness sampling inspections are conducted every 2 hours, and the batch defect rate is strictly controlled within 0.2%.
Applicable scenarios
Agricultural transportation
Specialized trailer for silage feed (equipped with tarpaulin anti-spread system)
01
Engineering transportation
Heavy-duty dump trucks, construction waste transport vehicles (equipped with tarpaulin sealing system)
02
Bulk material transportation
Specialized trailers for sand, gravel / coal (equipped with automatic opening and closing tarpaulin system)
03
Equipment system compatibility
Shur-Co Shur-Matic® automatic tarpaulin system, manual tarpaulin support arm system
04
Quality Control Process
Raw Material Inspection
Spectral composition analysis is conducted for each batch of aluminum alloy ingots to ensure that the alloy element content meets the standards;
Process Inspection
Real-time monitoring of mold temperature and injection speed during die casting to avoid undercasting / porosity defects;
Final Product Inspection
100% inspection of dimensions and surface finish, with sampling for tensile / salt spray tests, and providing inspection reports for shipment.
Custom Service Support
Parameter Customization
Based on the customer's requirements for the tarpaulin system, adjust the bracket size, hole layout, and inner diameter of the connection tube;
01
Material / Process Customization
Support for changing the aluminum alloy material and adjusting the surface treatment process (such as low-temperature resistant powder coating);
02
Mold Development
Provide a full-process mold development service of "sample prototyping → small batch trial production → batch production", with a sample delivery cycle of ≤ 10 days;
03
Packaging Customization
Can provide neutral packaging / brand logo packaging according to customer requirements, and support palletized and cartonized delivery.
04
FAQ
Q: Is this bracket only compatible with the Shur-Co STT-75-558 tarpaulin system? Can it be adapted to other brands/models of tarpaulin systems?
A: The standard bracket is an adapted component specifically developed for the Shur-Co STT-75-558 tarpaulin system; if you need to adapt to other brands/models of tarpaulin systems, we can provide the installation dimensions and connection interface parameters (such as pitch, inner diameter of the connection tube) of the target system, and we support custom development of the corresponding adapted model.
Q: Why was ADC12 aluminum chosen as the base material? Are there other materials available?
A: The core reason for choosing ADC12 aluminum is its good casting fluidity, high forming accuracy, and the balance of strength and cost, which can meet the load-bearing and batch production requirements of the tarpaulin bracket; available materials include 6061 forged aluminum alloy (suitable for scenarios with higher strength requirements), and AlSi10Mg high-toughness aluminum alloy (suitable for low-temperature / frequently vibrating scenarios). Specific customization can be based on your usage conditions.
Q: Does the product come with a quality inspection report? What does the report include?
A: Each batch of products comes with an official quality inspection report, which includes:
Spectral composition analysis results of the raw aluminum alloy;
Detection data of the finished product's size accuracy (pitch, tolerance, etc.);
Sampling report of mechanical properties (tensile strength, hardness);
Salt spray corrosion resistance test results.
Q: What information is required for customizing the bracket? How long is the customization cycle?
A: Customization requires providing: the installation drawings of the target tarpaulin system (including dimensions, holes, connection structure), or the actual adapted bracket sample; Customization cycle: sample prototyping ≤ 10 days, small batch trial production ≤ 15 days, batch production (≥ 500 pieces) ≤ 20 days.
Q: How long is the lifespan of this bracket? What are the daily usage precautions?
A: Under normal conditions (conventional transportation of commercial vehicles, -40℃~120℃ environment), the lifespan is ≥ 5 years; Daily precautions: Avoid severe impact on the connection tube area, regularly check the tightness of the installation hole threads, if exposed to high corrosion environment (such as coastal areas), it is recommended to clean the surface and reapply anti-rust agent every half year.
Ningbo Zhouchi Vehicle Industry Co., Ltd. was founded in 1992, located in Binhai Industrial Park of the beautiful coastal port city -Ningbo. Now our company covers the total area of 16000 square meters, with 150 staffs, including 20 quality inspectors and engineers. Our turnover is around12 Millions USD. Our company specializes in Aluminum Die-casting and Zinc Die-casting, CNC machining and assembling.
Quality Assurance
We have 100% quality guarantee to customers. We will be responsible for any quality problem.
Competitive Prices
We offer ODM service for customer with good quality and reasonable price.
12MLN
Estimated Turnover
150+
Professional Staff
100+
Annual Production of Molds
70%
For Export
our certifications
ISO 14001:2015
The ISO 14001:2015 certificate is an internationally recognized document that indicates that an organization has established, implemented, maintained, and continuously improved an environmental management system (EMS) that complies with the requirements of ISO 14001:2015.
This certificate certifies that the environmental management system of this organization has met international standards, enabling it to systematically manage its environmental responsibilities and commit to sustainable development.
IATF16949:2016
IATF 16949:2016 is an international standard for quality management systems in the automotive industry. It was developed by the International Automotive Task Force (IATF) and was released in October 2016, replacing the previous version of ISO/TS 16949:2009.
The core objective of IATF 16949 is to continuously improve, prevent defects, reduce variations and waste in the automotive supply chain. It aims to ensure that the design and manufacturing of automotive products (including components and materials) can always meet customer requirements and even exceed customer expectations.
our Partners
Our company has established long-term friendly and cooperative partnerships with Suzuki China factory, Peugeot China factory, Schneider Electric and other foreign and domestic well-known enterprises.
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