Qingdao Yidong Coal Mining Machinery Co., Ltd. is specialized in design and manufacture of
mining purpose flat connector units, block (flat) connector units, compact chain stand (V-lock)
connector units, various non-standard connector units, high strength chain, forged ring and various
non-standard customized mechanical parts.
The company was established in 2004. Having been intensively engaged in domestic market for
over a decade, the company has strong technical strength and cutting-edge machining equipment.
ll products are constructed with quality steel alloy as raw material. It relies on advanced heat
treatment and surface treatment technique, precision and perfect testing and inspection equipment
and process to manufacture stable quality and durable products conforming to ISO9001 quality
ystem standard. Among the products, connecting ring series products are qualified for mining
purpose product safety by national product safety approval and certification center.
QINGDAO YIDONG GOLLIERY MACHINE MANUFACTURING CO.LTD
The company used to be named Qingdao Yidong Machinery Co., Ltd. which was established in 1996. At the initial period of establishment, the company’s main lines of business were mechanical machining and design. Over the two decades, relying on R&D and production of mining machinery, this company has accumulated plenty of production experience and established a great technical
The company now has many CNC drills, mills and grinders, nine machining centers and over
20 wire cutters. It has independent R&D and design team which successfully developed CAD,
CAXA, UG and SOLIDWORKS. The company is able to provide one package service: survey and
mapping, modeling, programming, non-standard customization, developing machining technique
and finished product machining. We also have testing apparatus like hardness tester, flaw detector, 400-ton tension tester. We strictly control quality and ensure each piece of our products is
satisfactory to customer.
Qingdao Yidong Coal Mining Machinery Co., Ltd. is also specialized in providing parts for scraper conveyor, including scraper, press plate and E-bolts.
The scraper made by Qingdao Yidong Coal Mining Machinery Co., Ltd. is constructed of quality steel alloy, duly precision forged and heated treated, so that the scraper has wonderful performance.
Quality of chain made by Qingdao Yidong Coal Mining Machinery Co., Ltd. has gained extensive recognition by customers in China and abroad.
Purpose: for mining round chain (compact chain).
Features: All products are constructed of high strength steel alloy with
excellent structural design, mature heat treatment technology. Advanced
flaw detection and testing equipment is used in product quality inspection.
Every packed product has the best performance, high tensile strength,
high wear resistance, long service life and simple and fast installation
feature. It is suitable for in-well high intensity work. It improves effective
working time of in-well equipment, saving cost and increasing production
Reference standard: Flat Connector Unit MT/T99-1997.
Compact chain connector unit DIN22258
Purpose: scraper conveyor, tube plate reversed loader, coal miner, excavator, coal plough and other similar equipment in which such chain is used.
Manufacture reference standard: DIN 22252/PN-G-46701/GB/T-12718
Caution: Any anti-corrosion protection measure may reduce chain mechanical performance, and therefore such anti-corrosion plan should be agreed for each order.
No. 16 Chongqing North Road, Chengyang District, Qingdao
WeChat public number
18678958572 Manager Liang
18663922772 Manager Li