The service temperature of high pressure seamless steel pipe is below 450 ℃, and the domestic pipes are mainly made of A573 grade 70 carbon steel plate, No.10 and No.20 carbon steel hot-rolled pipes or cold drawn pipes. High pressure seamless steel pipe is often used in high temperature and high pressure conditions. Under the action of high temperature flue gas and water vapor, the pipe will be oxidized and corroded. The steel pipe is required to have high endurance strength, high oxidation resistance and corrosion resistance, and good structure stability.
The company adheres to the business philosophy of "excellent quality and integrity", aims to create a first-class enterprise in the A573 grade 70 carbon steel plate industry, takes circular economy and resource reuse as the main line, takes energy conservation, emission reduction and sustainable development as the purpose, relies on advanced equipment, perfect transportation infrastructure and good reputation, and strives to become a leading enterprise in the A573 grade 70 carbon steel plate industry with scientific management, high quality, first-class service and harmonious development
Quenching is a common heat treatment process. It is the metal heat treatment process in which the A573 grade 70 carbon steel plate metal workpiece is heated to a proper temperature and kept for a period of time, then immersed in the quenching medium for rapid cooling. Quenching can improve the strength and hardness of steel in a large range, and adjust the coordination between A573 grade 70 carbon steel plate strength and hardness, plasticity and toughness. Quenching is generally used as the final heat treatment.
When the stainless steel plate is alloyed with chromium, the type of surface oxide is changed to that formed on pure chromium metal. This tightly adherent chromium rich oxide protects the surface from further oxidation. This kind of oxide layer is very thin, through which we can see the natural luster of the steel surface, so that A573 grade 70 carbon steel plate, stainless steel has a unique surface.
From the order to the delivery, there are three quality inspections to ensure that the qualified rate of finished products is more than 100%. We promise that every order will be tracked in a timely manner to ensure that customers can receive goods safely and constantly listen to their opinions and suggestions, reflect on our own problems, and let customers feel at ease. We have a large warehouse in Shanghai and Tianjin, which can provide customers with sufficient sources of supply.
