ASTMA320L7/L7M low-temperature studs are Stud products made of ultra-high strength steel. It has high strength and toughness, good hardenability, high Fatigue limit and multiple impact resistance after quenching and tempering treatment. Its impact toughness is also excellent at low temperatures, making it an ideal choice for manufacturing large and medium-sized plastic molds. This product is resistant to high and low temperatures, high pressure, high strength, and corrosion resistance. It is widely used in various fields such as pressure vessels, petroleum and petrochemical, pump valves, heat exchangers, etc. Not only that, it can also meet the needs of customers who need strength, toughness, quenching and tempering brittleness, bringing more comprehensive and stable performance to your project. If you are looking for a durable and efficient stud product, then ASTMA320L7/L7M low-temperature studs will definitely be your best choice. It not only meets your requirements for strength and toughness, but also plays a stabilizing role in high, low, high pressure, and corrosive environments. Whether you are manufacturing pressure vessels or petroleum and petrochemical engineering, this product can provide you with more reliable and high-quality services,Full Thread Stud with Nut,L7/L7M Full Thread Stud with Nut,A320 Full Thread Stud with Nut,ASTM A320 L7/L7M Full Thread Stud with Nut.
Common defects of rolling thread: surface cracks or scratches on the thread part; Random buckle; The threaded part is out of round. If a large number of these defects occur, they will be discovered during the processing stage. If the quantity is small, these defects will circulate to users during the production process, causing trouble. Therefore, key issues related to processing conditions should be summarized and controlled during the production process.
We distinguish low carbon steel, medium carbon steel, high carbon steel, and alloy steel based on the carbon content in carbon steel materials.
Low carbon steel C% ≤ 0.25%. Mainly used for grade 4.8 bolts.
It is divided into 201, 304, 316, 316l, etc. Simply put, the higher the level, the better the corrosion resistance and high temperature resistance. The reason is that the content of Ni is different. The higher the Ni content, the more resistant it is to corrosion, and the stronger its ability to resist corrosion at high temperatures.
The Bolt performance grade label consists of two parts of numbers, representing the nominal tensile strength value and yield strength ratio of the bolt material. For example, bolts with performance level 8.8
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