OEM radiator sourcing requires more than choosing a model and negotiating a price. A reliable programme links the approved drawing, raw materials, production controls, testing, surface finish, accessories, labels and packaging. Importers should document these points before mass production and use the same checklist for every shipment.
1. Confirm the technical specification
State radiator type, height, length, depth, connection positions, thread size, working pressure and test pressure. Heat-output requirements should reference the applicable temperature conditions. Drawings must show tolerances and mounting dimensions, particularly for bottom-connection products.
2. Control materials and welding
Confirm steel grade and thickness for panels, tubes and convector components. Production checks should cover formed profiles, seam consistency and weld appearance. Leak testing must follow a defined pressure and holding time, with rejected units separated from accepted production.
3. Review pretreatment and coating
Surface preparation affects corrosion resistance and paint adhesion. Buyers should agree the cleaning and pretreatment process, powder specification, colour reference, gloss level and curing controls. The finish should be checked under consistent lighting for coverage, colour variation, particles and handling marks.
4. Check accessories and identification
Brackets, plugs, vents, screws and instructions must match the packing list. Product labels should identify the model, dimensions and production traceability. Private-label cartons, barcodes and language requirements should be approved using an artwork proof before printing.
5. Validate packaging and loading
Radiators need protection at corners, faces and connections. Carton strength and internal supports should reflect the handling route from factory to distributor. Container plans should control stacking, gaps and weight distribution. A pre-shipment check should record quantity, carton condition and container sealing.
SUNLIKE supports OEM and private-label heating radiator projects for international B2B customers. A shared inspection standard helps factory and buyer evaluate the same requirements, improves shipment consistency and reduces avoidable claims after arrival.