Selection lifting chain are the following items: 1. Inside / outside links deformation, cracks, corrosion 2. embroidered pin is deformed or rotated, embroidered eclipse 3. Roller whether cracks, damaged by excessive wear 4. Lifting chain joints are loose abnormal sounds or abnormal vibration Cangzhou lifting chain manufacturers deformation 5. operation, lubricate the chain in good condition. Lifting chain price is based on the different types, specifications, models, materials lifting chain lifting chain administered prices. Chen power lifting chain models: diameter 6 ~ 20mm lifting chain, including 80 and 100 lifting chain lifting chain types. Lifting chain chain can be adjusted according to the height of lift lifting objects of different lengths crane essential extract important means to improve the operational efficiency of the crane to expand the operating range of the crane plays an important role. Cranes usually short link chain (lifting chain) shape. It measures: d represents the diameter or size round iron; l represents the length of the inside of the section or call long; b represents the inside width. Material is generally made of steel material. Strength properties when specifying steel using only these two materials, in addition to the combination of ingredients chemically related, but also with mechanical treatment and heat treatment related. By the numerous trials, we learned that with the molten steel made chain, when the diameter until 30cm, the chain of fine equal to the creator of the steel-making. Such as the chain diameter and then increase, it is to use more steel, as the result of steel to high temperature, while the expansion nor sensitive. Chain disadvantages. When the chain for cables is concerned, it has the disadvantage of following: overload and blow sensitivity greater elasticity very small Cangzhou lifting chain manufacturers, the situation is the sudden rupture simultaneously generated. Since the chain friction Cangzhou lifting chain manufacturers in phase between Festival and the Festival, a strong pattern. Due to the weight of the chain itself is very large, it can have a great inertia force, so when a large speed winch mechanism, quite inappropriate. Application load and test load, the load can be divided into the following types. 1. Apply the load (or allowable load): this load of chain can often afford those. 2. Test load: this load of the whole chain during the test must bear the load. 3. The rupture load: Each chain shall be taken as a rupture test three sections, three-section test chain must be able to withstand the load. Tensile strength material we used a great relationship, but the minimum should be 35 kg / cm. In cross-section welding, usually 25-30% lower than the strength of the other throughout. _ Chen lifting spreader chain of lifting chain (Online) _ Cangzhou, Hebei Chen force by the lifting chain sling Manufacturing Limited. Hebei chen sling Manufacturing Co., Ltd. (www.qzhon.com) Hebei Baoding, forestry machinery leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Chen led force in a sling with the staff warmly welcome all inquiries negotiations to create chen sling a better future.