What are the ASTM A691 Gr 1.25Cr Cl.42 EFW Pipes?
The alloy steel seamless pipes and channels produced under the standard ASTM A691 are primarily designed for high-temperature service. These pipes and channels are used in various industries including HVAC and firefighting, hydrocarbon process, plumbing, oil and gas, and sewage & water well. In the following paragraphs, we will discuss the various uses of these pipes and channels.
The steel pipes manufactured per the ASTM A691 Gr 1.25Cr Cl.42 EFW Pipes standard can be found in a variety of shapes and sizes. They vary in thickness, from three to twelve millimeters, and are available in schedules ranging from sch5 to XXS. Each type of pipe has its pressure capacity and a variety of physical properties, and they can be either seamless or welded. Seamless pipes can be welded using most conventional methods.
Uses of ASTM A691 Gr 1.25Cr Cl.42 EFW Pipes
LSAW and ASTM A691 Gr 1.25Cr Cl.42 EFW Pipes products are manufactured using a fusion weld process and range in outer diameter from 17mm to 914mm. They have wall thicknesses ranging from 2mm to 60mm and schedules from sch10 to XXS. A691 Cl22 Pipe is an example of a pressure vessel-quality pipe and is used in structural and industrial applications. It has a high hardness rating of 201 Brinell, which makes it highly resistant to corrosion.
As a general rule, ASTM A691 Gr 1.25CdR/Cr.42 EFW Pipes are made of carbon steel or alloy steel. EFW pipe is produced by joining two plates using a fusion welding process. These pipes are intended for high-pressure service and elevated temperatures. Heat treatment may not be required. There are different grades of ASTM A691 Gr 1.25Cr Cl.42 EFW Pipes, and they can be classified by the grade of the steel. Welds are radiographic and pressure-tested.