Stainless steel double-sided feed troughsink

Production Process: Core CNC Stainless Steel Sheet Bending  + Supplementary Processes

The manufacturing of stainless steel double-sided feed trough sinks takes precision CNC metal sheet bending as the core process, combined with food-grade targeted supplementary technologies to meet the requirements of safe feeding (non-toxic, easy to clean) and long-term use in farm environments. The detailed steps of the metal sheet bending process are as follows:

1. Step 1: Food-Grade Raw Material Selection & Pre-Inspection - We select high-quality food-grade stainless steel sheets suitable for feeding equipment, mainly including 304 stainless steel (1.5mm-3.0mm) and 316L stainless steel (2.0mm-3.5mm). Each batch of raw materials undergoes strict quality inspection: chemical composition analysis (to confirm compliance with food contact standards), thickness uniformity test (tolerance ±0.05mm) and surface defect detection (no rust, scratches, burrs or impurities). Qualified sheets are cut into preliminary blanks using high-precision laser cutting machines, strictly matching the size requirements of double-sided trough bodies (e.g., trough length, width, depth) and auxiliary components (brackets, drain ports).

2. Step 2: Pre-Bending Pretreatment - The edges of the cut blanks are deburred by mechanical polishing to eliminate sharp corners, avoiding scratches on livestock and ensuring safe feeding. Subsequently, the blanks are subjected to degreasing and passivation processes to remove surface oil stains, dust and oxide layers—this step is critical to improving bending precision, enhancing corrosion resistance and ensuring the adhesion of subsequent surface treatments. For 316L stainless steel blanks, an additional electrolytic cleaning process is performed to further improve surface cleanliness, meeting high-standard food contact requirements.

3. Step 3: CNC Bending Parameter Setting & Positioning - The pretreated blanks are firmly clamped on the workbench of our 35-400 tons CNC bending machines. Our technicians input customized parameters (bending angle, bending radius, number of bending stations and sheet thickness) into the intelligent control system according to the double-sided trough structure design (e.g., trough body U-shaped bending, double-sided edge folding, bracket right-angle bending). The system automatically adjusts the gap between the upper and lower dies and enables angle compensation technology (optimized for food-grade stainless steel) to ensure the target bending precision (±0.5°). Before mass production, a trial bending is conducted on a sample blank to verify parameter accuracy and avoid batch defects.

4. Step 4: Precision Bending & Double-Sided Structure Formation - The CNC bending machine performs step-by-step bending to shape the core structure of the double-sided feed trough sink. First, it bends the main sheet into a U-shaped trough body with uniform depth and smooth inner wall; then, it completes the double-sided edge folding to enhance structural strength and prevent feed leakage; finally, it bends the supporting brackets into a stable triangular or rectangular structure to ensure the trough can bear the weight of feed and livestock impact. During the process, the machine's real-time monitoring system dynamically tracks the bending angle and sheet deformation, maintaining angle repeatability (±0.1°) to ensure consistent structure and performance of each trough.

5. Step 5: Post-Bending Inspection & Finishing - The bent parts (trough body, brackets) are removed from the machine and comprehensively inspected using a Coordinate Measuring Machine (CMM): verifying overall dimensional tolerance (±0.1mm-±0.3mm), bending angle accuracy, trough depth uniformity and flatness (≤0.2mm/m). Parts that do not meet the standards are reworked or re-bent. After inspection, a second fine polishing process is carried out on the inner and outer surfaces of the trough body to ensure smoothness (Ra≤0.8μm), and the parts are cleaned again to prepare for subsequent assembly and supplementary processes.

Supplementary Processes: To enhance product safety and usability, we add two key supplementary processes: ① Precision Welding & Sealing: We use argon arc welding to assemble the trough body, brackets and drain port components, ensuring firm weld seams and no oxidation. A special sealing process is applied to the trough body joints to prevent water and feed leakage. ② Surface Finishing: For 304 stainless steel products, mechanical polishing is performed; for 316L stainless steel products, optional electropolishing is provided to further improve corrosion resistance and stain resistance. The final quality inspection includes a water tightness test (no leakage for 24 hours), load-bearing test (withstanding ≥300kg load without deformation) and food contact safety verification to ensure product qualification.

Product Classification by Industry, Material & Part Type

Key Technical Parameters (Precise & Customizable)

Our Core Competitiveness

• Professional Technical Team: We have 15+ senior engineers with over 10 years of experience in metal bending and food-grade livestock equipment manufacturing. We provide 24/7 technical support for custom feed trough design (tailored to different livestock breeds and feeding scenarios) and complete custom mold development in 6-9 workdays, specializing in solving precision control and sealing problems of double-sided trough bending.

• Strong Production Capacity: Equipped with more than 20 sets of 35-400 tons high-performance CNC bending machines (optimized for food-grade stainless steel processing), paired with 18+ supporting laser cutting, welding, polishing and assembly production lines. Our annual production capacity of stainless steel double-sided feed trough sinks exceeds 2.5 million pieces, with an on-time delivery rate of 99% for global orders.

• Strict Quality Management System: Implement full-process quality control, covering food-grade raw material certification verification, real-time monitoring of bending precision during production, and final water tightness/load-bearing/food safety testing. Our product qualification rate reaches 99.8%, and we hold ISO 9001:2015, CE and FDA certifications, complying with international food contact and livestock equipment safety standards.

• Improved Supply Chain: We have long-term strategic cooperation with well-known certified food-grade stainless steel suppliers (such as Baoshan Iron & Steel, Chalco). The independent purchasing-processing-production chain ensures stable supply of high-quality food-grade materials and cost advantages. The raw material traceability rate is 100%.

• Global Shipping & Reliable After-Sales Service: Our professional foreign trade team is proficient in FOB, CIF, and other international trade terms, and cooperates with DHL, FedEx, Maersk and other well-known logistics companies to provide worldwide door-to-door delivery. We provide complete customs clearance documents (including food-grade material certification, product test report and certificate of origin). We offer a 1-year product warranty;  Our after-sales team responds to technical and quality inquiries within 24 hours.

Credibility Highlights

• We have served more than 260 B2B clients in over 40 countries (covering Europe, North America, Southeast Asia, Australia, South America), including 10+ global leading livestock farming equipment manufacturers and 20+ large-scale commercial ranches.

• Production Process Visualization: Upon request, we provide live factory videos and detailed recordings of the feed trough bending process (including parameter setting, precision bending, sealing test and quality inspection). Our ISO 9001:2015 and FDA certified workshop welcomes on-site audits to verify production capacity, quality control level and food-grade processing standards.

• Third-Party Certification: We can provide SGS/TUV test reports for material food safety, bending strength, corrosion resistance (salt spray test ≥1200 hours for 316L) and water tightness. For every order, we provide complete raw material traceability certificates and batch test reports.

• We have been a long-term strategic supplier for major global livestock equipment brands. We have maintained zero defect feedback for 5 consecutive years in the cooperation of stainless steel feed troughs, and are highly recognized by clients for product food safety, durability and adaptability to harsh farm environments.

If you have drawings (CAD/STEP/IGES files) or detailed requirements (target livestock breed, farm scale, trough size, material preference) for stainless steel double-sided feed trough sinks, please send them to us! We will provide a personalized process plan, quotation and sample proposal within 24 hours.

FAQ

Q1: How do you ensure quality?

A: We have a fully equipped quality inspection center, complete testing equipment, and a strict ISO 9001 quality management system. Each sheet metal stamping part is tested for dimensions, mechanical properties, and surface finish before delivery to ensure stable quality and compliance with international standards.

Q2: What are the prices of the Sheet Metal Stamping Parts?

A: Prices depend on several factors, including raw materials, tolerances,  surface treatments, and order quantity. Since Xinlongji Metal  owns and manages integrated stamping factories, we can provide competitive real-time quotations while maintaining stable product quality for every batch of custom sheet metal parts.

Q3: How can I get a better price?

A: All our prices are based on high-quality standards. With the same material and precision, our sheet stamping parts are more cost-effective because of supply chain integration. Larger orders or long-term cooperation projects can help you obtain even better prices and stable supply support.

Q4: What's the MOQ for Sheet Metal Stamping Parts?

A: MOQ depends on product size, complexity, and raw material type. You can send us 2D or 3D drawings, and we will evaluate production feasibility and confirm the MOQ. Xinlongji Metal guarantees flexibility for trial runs and supports small batches for initial testing.

Q5: What is your delivery cycle?

A: Delivery time is typically around 30 days. Complex parts or larger orders may require slightly longer schedules. Our integrated factories coordinate production, packaging, and shipment efficiently. In most cases, we can complete orders within 45 days while ensuring consistent quality and timely delivery.

Q6: What surface finishes do you offer?

A: We offer powder coating, galvanizing, anodizing, sandblasting, and more through long-term partnerships with surface treatment factories. Surface finishing choices depend on material, environment, and functional requirements. Xinlongji Metal provides the most suitable solution for every sheet metal stamping part based on its intended application.

Q7: Which countries do you ship to?

A: Qingdao Xinlongji Metal Manufacturing Co., Ltd. exports sheet metal stamping parts to more than 60 countries across Europe, North America, South America, Africa, and Southeast Asia. Our logistics team ensures timely shipping and helps clients manage customs procedures and freight costs effectively for each destination.

Q8: What size Sheet Metal Stamping Parts can you produce?

A: Our 800-ton punching machine supports various part sizes. The feasible dimensions depend on material, thickness, shape, and process complexity. You can send us 2D or 3D drawings (NDA available), and we'll evaluate production feasibility and provide a cost-effective solution for your project.

Q9: What information do I need to provide to get a quote?

A: Please provide:

2D/3D drawings or samples;

Quantity and delivery terms;

Material, surface treatment, tolerance, and weight.

The more detailed the information, the faster we can offer an accurate quotation for your custom sheet metal stamping parts project.

Q10: What payment methods and delivery terms do you support?

A: We support  T/T, and other payment methods. Delivery terms include FOB, CIF, and EXW. If you have specific requirements, we'll assess them carefully to ensure smooth cooperation and secure international transactions for all sheet metal parts orders.

Q11: Is  Xinlongji Metal  a factory, manufacturer, or trading company of Sheet Metal Stamping Parts?

A: Xinlongji Metal is a professional OEM sheet metal stamping parts manufacturer with strong factory resources and integrated supply chain management. Our team covers engineering, procurement, production, logistics, and after-sales to provide one-stop metal stamping solutions for global customers.