Custom 304 Stainless Steel Extension Springs, OEM Precision Stamped Custom Tension Spring Hardware

Custom 304 stainless‑steel extension spring belongs to our high‑precision custom tension‑spring hardware lineup. This durable rust‑proof extension spring is widely used for household appliance accessories, fitness‑equipment fittings, door and window hardware, mechanical equipment components, medical‑device spare‑parts and handmade metal‑craft accessories. Dongguan Xinwang Hardware & Plastic Co.,Ltd is an original‑equipment manufacturer focusing on custom metal stamping, bespoke metal fittings and handmade metal crafts. Two decades‑long experience in metal‑hardware customization enables us to handle complicated extension‑spring custom‑orders for overseas B‑end clients. Our core competitive strength lies in our ten senior engineers. Every team‑member has worked on metal stamping, spring coiling and metal component fabrication for more than 20 years. Our independent R&D and design department provides end‑to‑end customized service, covering drawing optimisation, mould‑opening, spring‑tension parameter debugging, sample‑fabrication, mass‑production and surface‑finish treatment. Once the exclusive mould is finished for your bespoke stainless‑steel extension‑spring, our factory will sign an agreement for regional‑exclusive sales privilege. This policy prevents your customized tension springs from homogeneous‑competition inside your local market. Our inventory of over one hundred self‑owned private spring moulds helps buyers save mould‑opening expense and shorten the whole project timeline. Our standard sample‑making cycle lasts 3‑7 working‑days. After overseas B‑end buyers approve spring samples, our production workshop launches mass‑manufacturing. Our mature production workflow guarantees bulk‑goods delivery within 25‑30 working days. Fast sampling service and efficient bulk‑production assist hardware wholesalers, machinery factories and metal‑craft brands to speed‑up new‑product release. Strict quality‑control covers every single manufacturing procedure. Our in‑house professional testing‑lab conducts raw‑material composition inspection, tensile‑strength testing, repeated‑pull fatigue testing, hardness inspection and salt‑spray anti‑corrosion testing. Every finished stainless‑steel extension‑spring receives 100% full‑inspection before export shipment. All process inspection‑files and finished‑product test‑reports are well‑archived to achieve complete‑chain‑level product traceability. If tension‑springs carry factory‑caused quality defects, Xinwang Hardware provides completely free‑of‑charge remanufacturing service for our B‑end cooperative partners. Our consultant‑oriented overseas‑sales‑team owns 15‑year‑long experience serving international custom‑hardware buyers. Our sales specialists rapidly decode complicated technical specifications including spring‑wire diameter, hook‑loop dimension, maximum pulling load, fatigue‑cycle requirement and surface‑treatment standard. We break down cross‑border‑communication barriers and reply to your inquiries promptly. Our primary customer groups are worldwide B‑end purchasers, such as hardware importers, home‑appliance manufacturers, fitness‑gear factories, medical‑component suppliers and handmade metal‑craft workshops. Long‑term cooperative clients keep delivering positive reviews about stable product quality, harmless raw‑material, flexible ODM customization and thoughtful after‑sales support. Please send your technical drawings and personalized specifications of stainless‑steel extension springs for factory quotation. Visit our official website: xinwanghardware.com