Product Description

Qingdao Dutelongdi Cast Iron Co., Ltd. adopts advanced Geman patent technology, specializing in the production of all kinds of gray iron, ductile iron, alloy cast iron sections: round, square, rectangular, regular polygon, semi circular profiles and symmetry, asymmetric cross-secion shaped profiles and plates. The company  cultivates professional technical team, upholds the principle of strict product quality inspection system to ensure ex factory pass rate of **0%. The company is located in Qingdao with the convenience of sea, land and air transportation and international trade open city. Based on the spirit of customer first, honesty, users of the urgency of the principle, ensure the timely delivery to meet the urgent need of users at home and aboad.

Horizontal continuous casting iron bars after decades of application practice, now widely used in hydraulic, machine tools, dies, locomotive, metallurgy and compressor parts industry and general use.

　　(1) hydraulic industry

　　Internal iron bars without defects, density greater than sand casting, with a fine organization, pressure density of the fine, under pressure *5Mpa, the wall thickness of 1mm sample no point infiltration and peripheral infiltration phenomenon, coupled with its excellent machining performance, very suitable for hydraulic parts.

　　(2) compressor industry

　　The rolling movement of the piston air compressor, scroll piston rings for critical components. By quenching, casting and machining of gray cast iron rod piston rings (also known as roll sets) can easily reach more than HRC*0 hardness and heat distortion, high dimensional accuracy. US Potorex, Fedders Corporation, Japan Hitachi, Shanghai Hitachi, LG, Gree and other famous Chinese manufacturers have bulk purchases.

　　(3) the machine tool industry

　　In the machine tool industry, the use of cast iron profiles manufacturing lathes, milling machines, grinders, drill press table and machine tool guide shaft.

　　(4) vehicle industry (ADI gear)

　　Casting profiles compared with sand casting, such as tensile strength *0Mpa after quenching temperature above *0% elongation, hardness 2HRC, mechanical properties significantly better than sand castings; Forged compared in terms of processing the entire gear reduce the cost of about *3%.

　　(5) metallurgical industry

　　Morgan technology applicable to high-speed wire rod rolling production line conveyor roller by Baosteel, Shougang Steel and other companies use to change the past, our dependence on foreign imports of high-speed wire accessories situation.

　　(6) railway locomotive industry

　　According to the Ministry of Railways train speed requirements, the use of ductile iron casting profiles after processing into the locomotive ADI (ADI) sets requirements Austempering HRC****5,  ***0Mpa,  1%, crushing strength  ***0Mpa promote the use of more than a decade to achieve good yields.