For chemical, energy and water-treatment projects, butt-weld fittings are mainly divided into seamless and welded types, which are often confused by buyers.
Seamless fittings are cold-pushed without welding seams, delivering outstanding pressure resistance for high-temperature and high-pressure conditions. Welded butt-weld fittings are rolled and welded from steel plates. After qualified UT and PT non-destructive testing, they are widely used for large-diameter, medium- to low-pressure projects with cost advantages.
Muterra manufactures both types in compliance with ASTM A403. We offer professional selection suggestions according to medium, pressure, temperature and size to help avoid potential risks for your projects.