Shanghai Biquick details the engineering behind its steel belt cooling systems

Shanghai Biquick Process Systems says its steel belts are built as process components for cooling, curing and conveying lines in food, chemical and new energy manufacturing. The company highlights material choices, heat-transfer design and custom fabrication as the main factors behind higher yield, tighter tolerances and lower operating costs.

Why it matters: - Steel belts are not just conveyor surfaces in cooling and curing lines. Belt flatness, weld quality and thermal behavior directly affect product uniformity, throughput and yield. - Buyers in chemicals, food and precision manufacturing need belts matched to temperature, corrosion exposure, hygiene rules and mechanical load. - The global steel belt conveyor market was valued at about USD 1.75 billion in 2025 and is projected to grow at a 6.7% CAGR through 2034, according to Research and Markets.

What happened: - Shanghai Biquick Process Systems Ltd., operating under the ESP brand and based in Pudong, Shanghai, outlined its steel belt engineering approach for thermal processing equipment. - The company says it designs and manufactures steel belts for chemical pastillation, powder coating flaking, food baking and chocolate cooling. - BPS says its facility covers 2,000 m², employs 40 people and includes a 15-person R&D team. - The company estimates annual output at 50-80 tons of steel strip and 5-8 integrated steel belt cooling or forming systems. - BPS describes itself as an engineering partner for OEMs and processors that need application-specific belt performance.

The details: - In cooling and curing systems, the steel belt acts as both a transport surface and a heat exchanger. - Uneven cooling can create internal stress, surface defects and inconsistent particle size. - Thinner belts transfer heat faster but sacrifice rigidity. Thicker belts improve strength and flatness but slow cooling. - BPS says its stainless steel belts achieve thermal conductivity of about 15-20 W/m·K in application case evaluations. - In a new energy material drying and curing line, BPS says that conductivity improved drying efficiency by 25% and cut energy use by 18% versus the customer’s previous belt. - The same belt reportedly operated without oil or dust release and met Class 1000 cleanroom requirements. - BPS says it applies stabilization treatment to relieve internal stress and weld leveling to smooth the endless joint. - The company reports weld fatigue life of at least 2 million cycles in food line applications and elongation of no more than 0.2%. - In a baking equipment OEM case, BPS says the after-sales failure rate stayed below 1% over a 3-5 year warranty period, with actual belt life of 4-6 years. - For high-speed precision assembly lines, BPS says belts reached hole position accuracy of ±0.01 mm, 10-meter cumulative tolerance below 0.05 mm and repeat positioning accuracy of ±0.05 mm. - Those belts replaced imported steel strips, cut cost by 45%, shortened delivery from 12 weeks to 3 weeks and maintained transmission efficiency of at least 98%. - BPS says its product range includes stainless steel belts, carbon steel belts, PTFE-coated steel belts, special requirement steel belts and process systems that integrate those belts. - Stainless steel options include 301, 302, 304, 316L and higher alloys. - For food applications, BPS uses 304 or 316L stainless steel with surfaces finished for FDA/CE food-contact compliance. - For chemical processes, BPS offers 316L, 310S, duplex stainless steel and nickel-based alloys such as 718. - Carbon steel belts use a nominal composition of 0.65-0.75% carbon, 0.15-0.30% silicon, 0.60-0.90% manganese and up to 0.20% chromium. - PTFE-coated belts are aimed at sticky products such as chocolate, syrup, paste, colloid and powder. - The PTFE coating is meant to lower adhesion, improve release and simplify cleaning while the steel substrate preserves strength and stability. - BPS says special requirement belts can include punching, slotting, flanging, guiding edges, side arc chamfering, thickening, strengthening and integrated molding. - The company says available belt thicknesses range from 0.4 mm to 3.0 mm, widths from 100 mm to 2200 mm and single-strip lengths above 50 m through seamless circular welding. - Standard working temperatures span -60°C to +250°C, while special alloys can handle up to 1100°C. - BPS lists tensile strength at 1100-1700 MPa depending on grade and heat treatment. - The company says flatness tolerance is ≤0.02 mm/m, length tolerance is ±0.05 mm per 10 m and hole positioning accuracy is ±0.01 mm. - Surface options include mirror, brushed, polished, frosted and anti-stick food-grade coatings, plus punching, slots, longitudinal welding, guide bars and flanging. - BPS says its six core engineering capabilities are material customization, custom sizing, surface customization, hole/accessory customization, process customization and working-condition customization. - Stock-material lead times are 7-10 days, custom orders take 15-20 days and urgent orders can be completed in 5-7 days for an added fee. - BPS says incoming quality control includes spectral analysis, thickness, hardness and tensile testing, plus surface inspection. - Process inspection covers dimensional tolerance, flatness, straightness, weld appearance and non-destructive testing. - Final validation checks dimensional, flatness and surface criteria before shipment. - In a powder coating case, BPS says a customer used more than 40 belts over multiple years at 180-220°C. - The customer reported flatness of ≤0.02 mm/m, a 99.7% yield and a 40% lower lifecycle cost versus imported belts. - In a lithium battery diaphragm case, BPS says more than 10 stainless steel strips ran in a dust-free environment at 160-200°C. - The customer reported 2-4 years of operation without oil or dust release, a 25% efficiency gain, an 18% energy reduction and a 2-3% yield increase. - In food processing, BPS says a major baking and snack group deployed more than 120 belts across multiple factories for tunnel ovens and cooling lines. - That customer reportedly cut costs by 35%-50%, reduced delivery from 3 months to 2-4 weeks and lowered downtime maintenance by 60%.

Between the lines: - BPS is selling customization and process integration, not just raw belt stock. - The case studies are doing most of the commercial work here. They point to better yield, faster delivery and lower lifecycle cost as the main purchase arguments. - The focus on weld fatigue, flatness and tracking suggests the company is positioning the belt as a reliability component, not a commodity part. - The stated lead times also suggest an advantage for buyers trying to reduce imported-belt inventory and long procurement cycles.

What's next: - Buyers evaluating belts for sulphur pastillators, resin coolers, chocolate conveyors and tunnel ovens are expected to keep using process temperature, load, corrosion exposure, flatness and weld quality as the main selection criteria. - BPS says its ODM model will continue to pair belt design with customer equipment rather than selling a generic strip. - The company is likely to keep leaning on documented case performance as it competes with imported and domestic belt suppliers.

The bottom line: - For cooling and curing lines, the belt is a core engineering input. Shanghai Biquick is pitching steel belts as a custom thermal and mechanical system built around the process, not as a standard conveyor accessory.