Grade 70

Grade 70 chain is a high-strength, heat-treated alloy steel chain that is widely used in heavy-duty lifting, towing, and transport applications. Here are some key characteristics of grade 70 chains:
Material Composition: Grade 70 chain is typically made from a heat-treated carbon steel alloy, providing exceptional strength and durability. The exact chemical composition may vary slightly depending on the manufacturer.
Strength: Grade 70 chain has a significantly higher working load limit (WLL) or maximum load capacity compared to lower-grade chains such as Grade 30 or Grade 43. It is designed to handle heavy loads and provide a high level of strength and reliability.
Finish: Grade 70 chain is commonly finished with a yellow chromate or gold zinc coating to provide enhanced corrosion resistance. This coating helps protect the chain from rust and prolongs its service life, especially in outdoor or harsh environments.
Markings: Grade 70 chains are usually marked with "Grade 70" or "G70" along the chain links for easy identification and compliance with industry standards.
Versatility: Grade 70 chains are versatile and find application in various industries, including transportation, construction, and agriculture. They are commonly used for securing cargo, towing heavy loads, and as tie-downs for transportation purposes.
Standard Compliance: Grade 70 chains are manufactured to meet industry standards such as ASTM (American Society for Testing and Materials) or NACM (National Association of Chain Manufacturers). These standards ensure that the chain meets specific quality, strength, and performance requirements.
Safety Considerations: It is crucial to handle and use grade 70 chains in accordance with proper safety practices and guidelines. Overloading or misusing the chain can lead to accidents or equipment failure. Regular inspections and maintenance are essential to ensure the integrity and reliability of grade 70 chains.
Grade 70 chains are known for their high strength, durability, and corrosion resistance, making them a popular choice for demanding applications that require robust lifting and securing capabilities. When selecting grade 70 chains, it is important to consider factors such as load requirements, environmental conditions, and compliance with applicable industry standards.