Frequently Asked Questions
Q1: Are your transformer accessories (tanks, cores, radiators) suitable for non‑standard transformer models? Do you support customisation based on drawingsA1: Absolutely. We are not only a manufacturer but also a provider of customised solutions. Whether you provide hand‑drawn sketches, used part samples, or PDF drawings, our technical team can produce precise CAD production drawings for you. For cores, we can tailor the stacking scheme of grain‑oriented silicon steel sheets according to your loss requirements; for tanks, we can adjust wall thickness and reinforcement structures based on insulation class
Q2: How do you ensure that the cores or clamping frames you produce match the performance of my original transformer designA2: We implement full‑process quality traceability. For cores, we strictly test flux density and specific loss to ensure they meet or even exceed national standards. For clamping frames (clamps), we pay special attention to punching position accuracy and galvanising/anti‑corrosion treatment, and provide CMM (coordinate measuring machine) inspection reports for critical dimensions, ensuring seamless installation upon receipt
Q3: What materials are used for the transformer tanks and radiators? How do you prevent rustingA3: We conventionally use high‑quality cold‑rolled steel plates (Q235B or Q345R). For rust prevention, we perform strict shot‑blasting to remove mill scale, followed by epoxy coal tar paint or polyurethane topcoat, with a dry film thickness strictly controlled above 120μm. For radiators (fin‑type radiators), we place special emphasis on internal pickling and Phosphating treatment to ensure that the transformer oil is not contaminated during circulation
Q4: Are the silicon steel sheets for the cores imported or domestic? Are the clamping frames strong enoughA4: We offer two options – Baowu Steel and Nippon Steel – to suit different budget requirements. For clamping frames (clamps), we use high‑strength steel formed in one stamping process, followed by vibration ageing treatment to relieve internal stress. This ensures that the clamps do not deform during a transformer short circuit, firmly securing the core
Q5: What is the minimum order quantity (MOQ) for individual accessories? Can you supply just 1 set for emergency replacementA5: We adhere to flexible supply. Although bulk orders enjoy better unit prices, we understand the urgency of the maintenance market and support single‑set orders. Whether you need 1 radiator or 1 core set, our production line responds quickly, and small‑batch orders receive the same process standards as large orders
Q6: What is the warranty period for the accessories? What if I find slight dimensional deviations after receiving the goodsA6: We provide a 12‑month quality guarantee (from the shipping date). If any installation issue is caused by our manufacturing errors, we commit to unconditional replacement or return, and we will bear the two‑way freight. Meanwhile, we recommend that before mass production, we can make a first‑article sample for your approval before proceeding with full‑scale production
Q7: How do you prevent impact damage to cores and radiators during long‑distance sea or land transportA7: We use export‑grade, fumigation‑free wooden crate packaging. For cores, we employ vacuum‑sealed moisture‑proof aluminium foil bags with desiccants to prevent rust from moisture during transit. For radiators and tanks, we fill them with 0.02MPa dry air and seal the openings, and secure them with external steel frames to ensure no movement inside the container
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