ASTMA320L7/L7M low-temperature studs are a product made of ultra-high strength steel. It has high strength and toughness, and good hardenability. After quenching and tempering treatment, its Fatigue limit and multiple impact resistance are higher. At low temperatures, its impact toughness is particularly outstanding, making it very suitable for manufacturing large and medium-sized plastic molds. This product has high and low temperature resistance, high pressure resistance, and corrosion resistance, and is widely used in various fields such as pressure vessels, petroleum and petrochemical, pump valves, and heat exchangers. In addition, it can also meet customers' requirements for strength, toughness, hardenability, and temper brittleness. If you are looking for a durable and efficient Stud product, ASTMA320L7/L7M low-temperature studs will be your best choice. It not only meets your requirements for strength and toughness, but also maintains its stable performance in high, low, high pressure, and corrosive environments. Whether you are engaged in manufacturing pressure vessels or petroleum and petrochemical engineering, this product can provide you with more reliable and excellent services.
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The common feature of rolling (friction) pressure thread machining is that there is no need for too many rolling revolutions. If there are too many, the efficiency is low, and the surface of the thread teeth is prone to separation or random buckle phenomenon. On the contrary, if the number of revolutions is too small, the thread diameter is prone to losing its circle, and the initial rolling pressure abnormally increases, resulting in a shortened mold life.
The horseback bolts are not classified by their heads. Its English name is U-Bolt, which is a non-standard component with a U-shaped shape and is also known as a U-bolt. It has threads at both ends that can be combined with nuts and is mainly used to fix tubular objects such as water pipes or sheet objects such as car leaf springs. Due to the way it fixes objects like a person riding a horse, it is called a riding bolt.
Among them, 316 and 316l have better strength, with higher yield strength and tensile strength. However, the high-temperature and corrosion resistance of 316l is stronger than that of 316.
There are more than 10 performance levels of bolts used for structural connections, including 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc. Among them, bolts of grade 8.8 and above are made of low-carbon alloy steel or medium carbon steel and heat treated (quenched and tempered), commonly referred to as high-strength bolts, while others are commonly referred to as ordinary bolts.
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