Yongnian County, Yuan Long Fastener Manufacturing Co., Ltd. is engaged in the production of specialized companies screw rings, located in Longquan Yongnian County, Handan City, Hebei Industrial Zone, convenient transportation. Yuan Long founded in 2000, after several years of development, the combination of training a large number of technical personnel and management team. General Hardware industry in the development, we mainly provide for the needs of groups of rings, screws and other industrial products. Mainly in stainless steel; carbon steel rings, screws and other materials General Hardware products mainly, its main purpose is to assemble motor parts, marine accessories. Model variety, mainly in what is primarily QM8321 screw rings, weighing 1kg American standard screw rings, product range, high quality and low cost can be supplied according to customer requirements. Caution: screw rings must be mounted vertically with the workpiece plane and joints need to be smooth, tight bonding required. Must adjust to the stretching direction, screw avoid contact with sharp edges of objects. Must strictly comply with the rated load, excessive use of frequent use and overloading are not allowed. Advantages: quality and stability, complete specifications, adequate cargo, inexpensive rings, screws, shipping convenience features: overall forged rings, screws, and after normalizing treatment and removal of oxide; forgings no burnt, crack defects; screw rings after unification hardness test, hardness values ??HRB67 ~ 95. Screw rings crown force strength rating 12.9. The appearance of smooth, no cracks defects, durable corrosion rust, strong efforts to fight. Screw rings widely used in ports, power, steel, shipbuilding, petrochemical, mining, railways, construction, metallurgy, automobile manufacturing, plastics machinery, industrial control, highways, large transport, pipelines and auxiliary set, slope tunnels, wells control protection, salvage, ocean engineering, airport construction, bridges, aviation, aerospace, and other important venues and infrastructure construction industry, machinery and equipment. Screw rings Surface treatment: CORRUD-DT, the surface treatment is stronger than ordinary galvanized anti-corrosion effect, at least 20 times. External thread length ¨H¨, bolts and other parts together, you must use the same quality level of the bolts when replacing. Overall forged rings, screws, and after normalizing treatment and removal of oxide; forgings no burnt, crack defects; screw rings unity through hardness test, hardness value HRB67 ~ 95. Screw rings crown force strength rating 12.9. Screw rings must be mounted vertically with the workpiece plane and joints need to be smooth, tight bonding required. Must adjust to the stretching direction, screw avoid contact with sharp edges of objects. Load testing with screw rings by 2.5 times the working load are 20,000 times fatigue test at 1.5 times the working load. Screw rings to meet or exceed ASME B30.26 standards. Screw rings from high alloy steel with reference to Germany RUD WBG type production, the products are exported to Europe, and through the local level G80 standard test. Better material than the existing higher domestic tension screw rings provide tensile test report. Screw rings must have professionals operate, and screw rings refer to the manufacturers instructions when connecting with the spreader, spreader and rings should keep joints rotate freely, professionals should conduct regular safety testing. Maximum working load of up to 30T, and can be customized inch thread. Screw rings National Standard | Yuanlong fasteners (certified) | Manzhouli screw rings from Yongnian County Yuan Long Fastener Manufacturing Limited. Yongnian County, Yuan Long Fastener Manufacturing Co. (www.hdyljgj.com) (www.hdyljgj.com) is Handan, fasteners leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness , and satisfy customer needs. Yuan Long fastener leadership with the staff warmly welcome all inquiries negotiations to create meta-long fasteners a better future. You can also access (www.hdyljgj.com/supply_details_41183040.html), for more information about the company.