Lifting chain should be clear before using its technical quality standards, certification lifting chain sling, should production, inspection department issued, and make the following mark (all the ends of the lifting chain on the chain, from Shanghai heavy chain, made obvious by the prosecutors inspection mark), look carefully lifting chain for deformation, cracks, corrosion, or the appearance of embroidered excessive wear. Lifting chain at all ends of the chain, the level of print quality code, every 20 of each chain length or per meter length, obviously teeth marks or print quality grade code. When using non-overload lifting chain, tightening, the lateral force, the use of shaking safekeeping, how much money one meter lifting chain to prevent rust and corrosion. Abnormal sounds or abnormal phenomena during operation, the operation of the lubrication condition is good. Lifting chain should be one of the following situations occur scrapped: 1. cracks; 2 chain ring diameter wear up to 10% of the original diameter; 3. plastic deformation, stretching up to 5% of the original length. Chen professional production of 80, 100 patent black, galvanized chain, 6-32 mm, raw materials are 20MN2, using advanced production line equipment, dock lifting chain, the whole strict quality control, using a carbon steel high temperature thermal treatment process dip made of, strictly from a variety of testing equipment to ensure its compliance with high intensity strength lifting chain standards to ensure that the impact resistance of products, carrying capacity, toughness and elongation rate to improve its safety performance and service life. Pier lifting chain lifting chain _ _ Shanghai Chen of the lifting chain (view) from Hebei chen sling Manufacturing Limited. Hebei chen sling Manufacturing Co., Ltd. (www.qzhon.com) is a professional. "Sling. Sling" company. Since its inception, we adhere to the "good faith, sound management" approach, the courage of healthy competition in the market, so that the "chen" brand has a good reputation. We adhere to the "service first, customer first" principle, so chen sling in chains, sprockets, has won the trust of the public, and establish a good corporate image. Special Note: This information is for reference only pictures and information, please contact us to obtain the most accurate information, thank you!