ASTM A928 S31803 EFW Pipe is a type of duplex stainless steel commonly used in various industries such as chemical, petrochemical, and oil and gas. It is known for its high strength, corrosion resistance, and durability. If you plan to use this type of pipe for your project, this blog post is for you. This article shares everything you need about ASTM A928 S31803 EFW Pipe.
What is ASTM A928 S31803 EFW Pipe?
ASTM A928 is a standard electric-fusion-welded (EFW) austenitic chromium-nickel stainless steel pipe specification. S31803 is a grade of duplex stainless steel that contains 22% chromium, 5% nickel, and 3% molybdenum. EFW pipes are formed by fusion welding the plates or sheets to form the pipe, which is then heat-treated to improve its properties.
Properties of ASTM A928 S31803 EFW Pipe
ASTM A928 S31803 EFW Pipe has excellent corrosion resistance, high strength, and good weldability. It is also resistant to stress corrosion cracking and has good fatigue strength. The yield strength of this pipe is 450 MPa, and its tensile strength is 620 MPa. It has a maximum operating temperature of 300°C and a density of 7.8 g/cc.
Applications of ASTM A928 S31803 EFW Pipe
This type of pipe is commonly used in chemical, petrochemical, oil and gas, pulp and paper, and mining. It is used for transporting corrosive and high-pressure fluids, and it is also used in heat exchangers, boilers, and pressure vessels. It is also used in structural and architectural applications, such as buildings and bridges.
Welding of ASTM A928 S31803 EFW Pipe
Welding of ASTM A928 S31803 EFW Pipe can be done using several methods, such as gas tungsten arc welding (GTAW), gas metal arc welding (GMAW), and flux-cored arc welding (FCAW). However, using the correct welding parameters and filler metals is important to ensure that the welds have the same or better properties than the base metal. Welding should be done in a clean environment and using proper safety equipment.
Maintenance of ASTM A928 S31803 EFW Pipe
To ensure the long-term performance of ASTM A928 S31803 EFW Pipe, it is important to maintain it properly. This includes inspecting it regularly for signs of corrosion, leaks, or other damages. It should also be cleaned regularly to avoid the buildup of contaminants that can cause corrosion. Qualified professionals with experience working with this type of pipe should do any repairs or replacements.
In summary, ASTM A928 S31803 EFW Pipe is a high-quality duplex stainless steel pipe commonly used in various industries. Its excellent corrosion resistance, high strength, and weldability make it an attractive choice for transporting corrosive and high-pressure fluids. Furthermore, this type of pipe can be welded using several methods, and it is important to maintain it properly to ensure its long-term performance. If you’re looking for a reliable and durable pipe for your project, then ASTM A928 S31803 EFW Pipe might be the perfect choice.