A333 and A335 are two different grades of alloy steel pipe elbows. Each grade has its own unique characteristics, applications, and uses. A333 is a low-temperature steel alloy, meaning it has a higher degree of ductility and is better suited for lower temperature applications. It is commonly used in the production of elbows for low-temperature…
What harm does h2s do? How should pipe fittings be treated to resist damage from h2s? H2S is a colorless, flammable gas that is produced by the breakdown of organic materials and is a by-product of the industrial production of many materials. It is also a naturally occurring gas, found in areas like sewers, landfills,…
Butt welding pipe fitting is a type of pipe fitting used for connecting two pipes of different sizes, materials, or configurations. It is one of the most common types of pipe fitting and can be used for all types of applications, including residential, commercial, and industrial. Butt welding is a type of welding process…
Long-necked butt welding flanges are common dedicated connections used in industries such as energy, petroleum and petrochemicals. They are commonly found in complex piping systems that serve multi-storey buildings and refineries. But why are they considered the perfect pressure vessel connection for these piping systems? Here are some of the reasons: Example of a long…
T91 alloy tube, T91 alloy tube is a new martensitic heat-resistant steel developed by the National Like Tree Ridge Laboratory and the Metallurgical Materials Laboratory of the American Combustion Engineering Company. It is based on 9Cr1MoV steel to reduce the carbon content, strictly limit the content of sulfur and phosphorus, add a small amount of…
Due to the good high temperature comprehensive performance of P91 steel, it has been widely used in the main steam pipeline of Large Power Stations in China in the past ten years. This paper describes the welding characteristics, welding process, welding quality inspection, welding quality monitoring and development trend of P91 pipeline. In the construction…