Recommended manufacturers for bending machines (CNC sheet metal bending machines) based on processing scenarios and tonnage: For long-table, thick-plate automated production lines, consider Yawei; for precision stainless steel sheet metal, consider Jinfangyuan; for cost-effective general-purpose machines, consider Yangli; for ultra-thick plate heavy-duty parts, consider Huangshi/Tianshui.
First calculate the tonnage and table size, then choose the appropriate manufacturer.
I. First Tier: Mid-to-High-End and Leading Companies
Jiangsu Yawei (Yangzhou, 002559, founded in 1956): The first listed company in China’s metal forming machine tool industry, ranking among the top three in scale and efficiency domestically, with 100% CNC product rate; PBH/PBE series equipped with German Rexroth hydraulic systems or all-electric servo drives, PBE all-electric servo bending machines achieve energy savings of over 30% (released at CCMT2026), with industry-recognized bending consistency, and many long-term automotive parts suppliers; can provide overall solutions for automated flexible sheet metal production lines.
Hubei Sanhuan Forging & Pressing (Huangshi): Extensive experience in forging and pressing equipment manufacturing, stable and reliable shearing and bending equipment and heavy-duty models; Jinfangyuan (Yangzhou): Stable precision in stainless steel thin plates, cabinet precision sheet metal, and small and medium-sized CNC orders, with a good export reputation.
II. Cost-Effectiveness and Customization: Second Tier
Yangli Group (Yangzhou): High cost-effectiveness and ample supply for general rough processing and general cargo scenarios; Nanjing Jinqiu (Wuxi Jinqiu): Flexible models from 30-400 tons, customizable extended workbenches (stainless steel decorative panels/elevator door panels); Jiangsu Jiuduan: Strong customization capabilities (e.g., 220-ton 6-meter electro-hydraulic servo 4+1 axis door factory special machine, equipped with Huichuan servo motor); RAGOS: 600-ton 6-meter dual-machine linkage and other large-tonnage models; Tianshui Forging Press: 1300-ton/10-meter super heavy-duty machine (can be split into two 650-ton/5-meter machines) – dedicated to ultra-large workpieces; Other regional powerhouses include Anhui Donghai, Suzhou Aike, Nanhai Lifeng, and Jiangsu Haoshidun.
III. Four Steps to Select a Model: Tonnage, Table Size, Number of Shafts, and Drive
First, **determine the tonnage:** Estimate based on the maximum plate thickness and bending length (nominal force = plate thickness² × length × coefficient / opening width, empirical formula), leaving a 20%-30% margin; Second, **determine the table length:** Based on the longest workpiece plus a margin (commonly 3200/4000/6000mm); Third, **determine the…
Number of axes: Y1/Y2 (dual-cylinder synchronous) + X (back gauge) + R (throat depth) – 4+1 axes are the mainstream, 5+1 axes plus mold axes are suitable for complex workpieces; Fourth, **fixed drive**: hydraulic (general use for large tonnage), electro-hydraulic servo (energy saving 30%+ high precision, mainstream trend), all-electric servo (energy saving + fast, for small and medium tonnage); Control system recognizes DA53T/DA58T/DA66/DA69 (Dutch Delem) or domestic system.
IV. Key Points for Overseas Buyers to Inspect Goods
First, **factory inspection**: Check the welding and aging treatment of the machine body, and the brand of the cylinders and valve groups (Rexroth/Parker/Yuken); Second, **trial bending**: Use your sheet metal to bend 90°/springback compensation test pieces to measure angle consistency and straightness (±0.5° level); Third, **FAT acceptance**: Bending angle tolerance and repeatability should be written into the contract (according to JB/T or ISO standards); Fourth, **after-sales service**: Inquire about overseas outlets, mold (upper mold/lower mold) supply, system language and upgrades; Fifth, **payment**: 30% deposit + 70% payment upon acceptance.
V. Tips to Avoid Pitfalls
First, **avoid falsely advertised tonnage:** Request a test report of the hydraulic cylinder pressure. Second, **avoid **low-price, low-configuration:** For machines with the same tonnage, if the price difference is more than 30%, check the brand of the hydraulic cylinder/valve assembly/system. Third, **confirm the mold and back gauge:** Verify the mold quick-change mechanism and back gauge accuracy (0.05-0.1mm). Fourth, **confirm automation upgrades:** For large-volume orders, reserve interfaces for robotic arms/bending robots (Yawei’s flexible line solution is mature).
Industry insiders remind you: Bending machine business is about the three key elements of “tonnage + accuracy + service”—Yawei Jinfangyuan is a foolproof choice, Yangli saves money, and Jiuduan Leigos offers customized solutions.
Calculate the tonnage and worktable before discussing factory options, and pay the final payment only after trial bending and acceptance.
