Import Floor Spring D-978 — Buy in Bulk from Supplier in China

The Floor spring D-978 is a floor‑mounted door‑closing device supplied by Foshan Chunli Lasting Hardware Door Control Manufacturing Co., Ltd in China. It features a cast‑iron body with an SSS surface finish and is engineered for doors up to approximately 1 050 mm wide and 150‑200 kg in weight. The main body measures 253 mm × 118 mm × 50 mm (L × W × H) and operates on low‑temperature anti‑freezing hydraulic oil. The unit provides double‑way 180° opening and a precise 90° stop, with stepless adjustment of closing force, speed and blocking action.

Cast iron offers high rigidity and resistance to wear, while the SSS finish protects against corrosion in indoor and outdoor environments. The spring is available in standard or eccentric configurations, allowing the height, width and length to be fine‑tuned by 4 mm, 5 mm and 6 mm respectively. Typical floor springs in this class are designed for a door‑closing speed range of 0.5‑2 m / s and use hydraulic oil with a viscosity of about 100 cSt at 40 °C. The device complies with EN EU3/4# standards for commercial door hardware, a common benchmark in the industry.

The D‑978 is widely installed in hotels, hospitals, schools and office buildings where reliable double‑way operation is required. Importers should request confirmation of the exact MOQ, packaging dimensions and Incoterms, as these details are not disclosed in the listing. The supplier states a seven‑year warranty and advises that the cam head be fitted with a dust‑proof cover to prevent oil leakage. Shipping is typically arranged from the supplier’s Jili Industrial Park facility in Foshan, but lead‑time and payment conditions must be agreed directly with the company.

Foshan Chunli Lasting Hardware Door Control Manufacturing Co., Ltd is located at Jili Industrial Park 39‑D Block, Chancheng, Foshan, Guangdong 528000, China. The company is listed as an imported‑tier supplier with a harbor trust tier, indicating it meets basic verification standards on the platform. Its response rate is currently recorded as 0 %, and the average response time is not available, suggesting that communication should be initiated early in the sourcing process.

The firm specialises in door control hardware such as floor springs, door closers and related accessories. The listing does not provide details on production capacity, certifications or export experience, so buyers are advised to request product test reports and compliance documentation before placing orders.