By pulling tension measuring chain elongation 1. To remove the entire chain of clearance  to be applied to some extent in the chain measurement 2. measurement   order to minimize errors in measuring 6-10 Section 3 (link) where The inner and outer L1 L2 size  roller measuring the number of links between the order of the judge dimension L = (L1 + L2) / 2 4. determine the length of the chain elongation  This value chain elongation before items Use limit values ??to compare the chain elongation = judge size - a reference length / reference length * 100% * reference length = Chain pitch count section, not be placed in a corrosive acid gas, liquid, solid environment has in but can not place it close to a variety of chemicals place. Second, can not be placed in a cool, moist environment samples lifting chain, lifting chain to avoid causing damp and rust corrosion. Third, not placed in a oil, viscous liquid and heavily polluted environments lifting chain hoists, lifting chain lifting chain to prevent contamination, causing corrosion. Fourth, before storing carburizing lifting chain, lifting chain need to ensure a clean surface and dried and placed in a dry, airy, clean environment. In order to better preserve lifting chain, we need to always pay attention to changes its storage environment, the timely lifting chain storage environment improvement. Chen power lifting chain, lifting chain, lifting chain from Hebei Hebei Chen force sling Manufacturing Limited. Hebei chen sling Manufacturing Co., Ltd. (www.qzhon.com) strong, credible, in Baoding forestry machinery industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead chen sling into the brilliant and you work for a better future!