Business philosophy
<p>The company has always adhered to the "quality" for survival, reputation, as the leading business philosophy, has an excellent team of engineers, perfect production equipment and after-sales service.</p>
After sales service and technical assistance
<p>After-sale service and technical assistance: company provides after sales service and technical assistance as per customers' requirement and needs with response within 24 hours.</p>
Personalized service
<p>Quality assurance,reaasonable prices, service country of origin, experience technical staff, excellent product performance.</p>
Stock
<p>There are emergency stocks for regular size perennially.This to save time for you.</p>
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Shandong Lisheng Machinery Co., Ltd. is a new generation enterprise dedicated to the hardware industry. It is located in Jining City, Shandong Province, the hometown of Confucius and Mencius. The company is a professional hardware supporting enterprise integrating design, research and development, production and sales. The main products are chains, wire ropes and their accessories: shackles, turn buckles, clips, rings, snap hooks and other forgings and castings, and accept drawings and samples for processing.
Importance of Proper Lifting Chain Usage
Proper usage of lifting chains is crucial to ensure safe lifting operations and prevent accidents or equipment failure. It is important to select the appropriate lifting chain based on load requirements, working load limits, and industry standards. Regular inspection and maintenance of lifting chains are necessary to identify any signs of wear, damage, or deformation that may affect their strength. Proper training and adherence to safety guidelines are essential for operators and riggers working with lifting chains to minimize risks and ensure optimal performance.
Functions of Lifting Chains
The primary function of lifting chains is to facilitate safe and efficient lifting and rigging operations. They are used to create a secure connection between the load and the lifting device. Lifting chains distribute the load's weight evenly, ensuring stability and reducing the risk of load shifting or accidents. They allow for controlled lifting, lowering, and positioning of heavy loads with precision. Lifting chains provide reliable load-bearing capabilities, enabling the safe movement of objects in various industries, including construction, manufacturing, and logistics.
About Chain Grades
One of the safety measures implemented was to place chain in Grades based on the ultimate breaking strength of that chain. This number is what we see today G30, G43, G70, G80 & G100 and the common chain grades. The number after each letter is N/mm2. For example, G80 means that the maximum stress on the chain at ultimate strength is 800 newtons per millimeter squared.
Which chain grade should be used for which type of application?
Alloy Chain Grade 80 or Grade 100 should be used for overhead lifting. ASTM states that alloy chain shall be able to elongate a minimum of 20% before fracture (7.3.5). To ensure that alloy chain consistently meets this requirement, ASTM requires the use of certain alloying elements in the manufacturing of the steel for alloy steel chain. These alloys can vary from company to company, but some key requirements are specified by ASTM. The alloy properties also improve the wear and tear that the chain will experience. Note that when chain is in use, no amount of stretch is allowed.
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Frequently Asked Question
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Only alloy steel chain, grade 80 or 100 is to be used for overhead lifting. Alloy steel chain will stretch when over loaded; other types of steel may break without warning. Steel chains slings used for lifting are manufactured specifically for lifting.
The most common reason for damage to chain and chain links stems from improper use, e.g. not complying with the chain's WLL chart. Using a chain incorrectly can cause damage such as cracks, breaks, stretched links or fittings, excessive wear, nicks, gouges and rigid chain links or fittings
Equipment should generally be inspected every three months, or more frequently if subjected to severe conditions.
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