<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>
<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>
<p>Quality assurance,reaasonable prices, service country of origin, experience technical staff, excellent product performance.</p>
<p>There are emergency stocks for regular size perennially.This to save time for you.</p>
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.
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.
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.
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.
There are different types of lifting chains available, designed to suit specific load requirements and lifting applications. Grade 80 chains are commonly used for general lifting purposes, offering a good balance between strength and affordability. Grade 100 chains provide higher strength and load-bearing capacity, making them suitable for heavy-duty lifting tasks. Additionally, stainless steel chains are available for applications that require corrosion resistance. The choice of lifting chain depends on factors such as load weight, working conditions, and safety regulations.
I am very satisfied for top quality product,quick response and attention provided by this seller and company，Thank you!
Quikly send,very good communication,all is ok,without problem.
Very good quality,fast and safe shipment,Nothing to improve
Great seller!Always online and helpful.Speedy delivery,very good and secure packing.
<p>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.</p>
<p>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</p>
<p>Equipment should generally be inspected every three months, or more frequently if subjected to severe conditions.</p>