ASME SA 671 / ASTM A671 Grade 60 Boiler Pipes …
ASME SA 671 Gr. 60 Boiler Pipes come in two types, electric fusion welded (EFW) and seamless. The EFW pipe is made from a combination of steel plates that are joined together and then heated until the edges fuse. ASTM A671 Grade 60 boiler pipes are used mainly in boilers and other pressure vessels. They are also used in pipelines, heat ...