321 stainless steel flange is a common pipe connection component, made of austenitic stainless steel 321 material, which has good corrosion resistance and heat resistance, and is widely used in petroleum, chemical, water treatment and other fields. It connects pipelines through flanges and bolts to ensure the tightness and stability of the piping system, and the flange surface is smooth, easy to install and maintain, and has excellent high temperature, low temperature and corrosion resistance, which can meet the needs of various demanding working conditions.


321 stainless steel flange is a widely used metal product for pipeline connection, mainly composed of iron, chromium, nickel and other elements, with excellent corrosion resistance and high temperature resistance. Its structure is characterized by the same inner and outer diameters, and the flange surface is smooth, making it easy to install and disassemble. The flange connection method is bolted to ensure the tightness and stability of the pipe connection. 321 stainless steel flanges are widely used in petroleum, chemical, electric power, food, and other industries, and are indispensable pipeline connection components in modern industries.

321 stainless steel flange is widely used in petroleum, chemical, water treatment, food and other industries, its main functions include corrosion resistance, high temperature resistance, good sealing performance, can withstand certain pressure and temperature changes, ensure the stable operation of the pipeline system, and have good wear resistance and oxidation resistance, extending the service life of the equipment.

flanges include GB/T 9112-2017, GB/T 9123-2017, JB/T 74-2015, etc., which specify the dimensions, nominal pressure, nominal diameter and other technical parameters of the flange, aiming to ensure the interchangeability, safety and corrosion resistance of the flange. GB/T 9112-2017 is applicable to butt welded steel pipe flanges, GB/T 9123-2017 is applicable to fasteners for steel pipe flanges, and JB/T 74-2015 is applicable to high-pressure pipe flanges. In addition, there are other relevant international standards such as ASME B16.5, EN 1092-1, etc., which are widely used in various industrial fields at home and abroad.

321 stainless steel flange selection should comprehensively consider the nominal pressure, nominal diameter, connection method, material grade, sealing surface type, thickness, flange standard, temperature range, medium characteristics, corrosion resistance, installation size, weight and other factors of the flange to ensure that the flange meets the design requirements during use, safe and reliable.
In the process of selecting 321 stainless steel flanges, it is necessary to comprehensively consider the matching of working conditions to ensure that the flanges can adapt to the actual working environment; Follow the principle of unified standards and choose flanges that meet national or industry standards; Consider sealing compatibility to ensure good sealing performance at the flange connection; pursue economic reasonableness, and try to reduce costs under the premise of meeting performance requirements; At the same time, follow the installation specifications to ensure the safety and reliability of the flange installation process and subsequent use.
Jianing 321 stainless steel flange is widely used in chemical, petroleum, food and other industries due to its excellent corrosion resistance and high-temperature resistance. The product is made of high-quality stainless steel material and is precision machined to ensure the sealing performance and pressure-bearing capacity of the flange. In addition, Jianing 321 stainless steel flange has good thermal shock resistance and oxidation resistance, suitable for high-temperature and high-pressure environments, providing users with reliable product guarantee.
321 stainless steel flange is a high-quality connecting element with good corrosion resistance, high temperature resistance, and oxidation resistance, and is widely used in petroleum, chemical, water treatment, and other fields. Jianing specializes in the production of 321 stainless steel flanges, with complete product specifications and reliable quality, providing you with one-stop solutions. Follow Jianing for more details.
Shanxi Jianing Forging Co., Ltd
176 9623 6479(Manager Xue)
176 9623 6479
Cuijiazhuang Industrial Park, Dingxiang County, Xinzhou City, Shanxi Province telephone
top