Views: 8 Author: Site Editor Publish Time: 2023-11-20 Origin: Site
ASTM A403 pipe fittings are made from austenitic stainless steel as the raw material, and are manufactured by welding the pipes together.ASTM A403 steel pipe fittings have excellent corrosion resistance, high temperature strength, and low temperature toughness, and are widely used in various fields and industries for pipeline systems.
What Is ASTM A403 Standard
ASTM A403 standard specification for austenitic stainless steel materials, including various stainless steel grades such as 304, 316, 316L,321,904,31254 etc. The ASTM A403 specification the manufacturing, inspection, and testing requirements for stainless steel butt welding pipe fittings.It is classified and named according to the material type, size, and pressure rating of the pipe fittings to indicate their scope of application. In addition, the standard also specification the requirements for chemical composition, mechanical properties, heat treatment, surface treatment, etc.
The Types Of ASTM A403 Steel Pipe Fittings
According to Shapes：ASTM A403 pipe fittings include 90degree elbow, 45degree elbow, tee, cross, cap, concentric reducer, eccentric reducer, stub end, etc.These fittings can meet different pipeline layout and connection requirements.
According to Materials：ASTM A403 pipe fitings include WP304/304L、WP316/316L、WP904L、WP317/317L、WP31254、WP347、WP321,etc.It can adapt to the needs of pipeline applications in different working environments.
Manufacturing Process And Advantages
In the ASTM A403 standard, the manufacturing process of butt welded pipe fittings includes raw material preparation, cutting and processing, forging, welding, heat treatment, surface treatment, and other steps.During the manufacturing process, it is important to prevent material damage, oxidation, and decarburization to ensure the surface quality and performance of the product.
The heat treatment of stainless steel pipe fittings mainly includes three processes: heating, holding, and cooling.These processes are interconnected and cannot be interrupted.The ASTM A403 standard clearly specifies the time and temperature of solution annealing and cooling methods for different grades of stainless steel materials.
Long service life
ASTM A403 pipe fittings have excellent corrosion resistance, high temperature performance, low temperature toughness, good welding performance, and strict manufacturing processes. They are widely used in the fields of petroleum, chemical, and electric power.