Lifting chain should be clear before using its technical quality standards, should production certificate issued by the inspection department, and make the following mark (all the ends of the lifting chain, lifting chain standards in the chain, is made by prosecutors significant inspection mark), look carefully lifting chain for deformation, cracks, excessive wear embroidered eclipse or look. Lifting chain at all ends of the chain, the level of print quality code, every 20 or the length of each chain length per meter, lifting chain specifications, clearly teeth marks or print quality grade code. When using non-overload lifting chain, tightening, lifting chain maintenance, lateral force, the use of shaking safekeeping, to prevent rust, 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. Lifting chain is composed by a long list of oblong chain. Comic material is made of Q215, Q235,20MnZ and MnV round by forge welding or soldering simmer. Welded chain according to the ratio of the pitch diameter D T and round, divided into two long-chain and short chain. Said long chain, NA and cranes. Short chain size for cranes; bending stress because when it is wound around the pulleys or rolls, and tangent chain produced at much less than the long chain. Lifting chain welded, press manufacturing precision different standards, specifications chain and is divided into two kinds of non-standard chain. In use, the lifting chain around pulley smooth surface, allowing the lifting chain there are some errors in the longitudinal direction, each pitch error allowable value. This chain has become a non-standard chain. Because the lifting chain when used in flat pulleys, Daqing lifting chain, he can slide along the wheel surface, therefore, it must be put to the burden she had to end fixed load. On the contrary, it is required to bypass the surface of the chain pulley special oval recess, which requires a chain fall exactly recess, then pitch error not greater than 0.03d, error no larger than the width. This chain has become standard chain. Lifting chain advantage for any direction have good flexibility, bending stress generated when bending small compared to other rigging. However, since there are major welding chain, easy to wear, extremely sensitive to shock loads and sudden rupture characteristics. Should be used with strict attention and examination. Daqing lifting chain, Chen power lifting chain, lifting chain specifications from Hebei chen sling Manufacturing Limited. Daqing lifting chain, Chen power lifting chain, lifting chain Specifications Hebei chen sling Manufacturing Co., Ltd. (www.qzhon.com) this year introduced a new upgrade, the above picture is for reference only, please call this page or Tel picture on to obtain the latest information, contact: Xu Lu source.