Low Temperature Service Tube
A 334 specification describes Low temperature service tubes applied up to minus 150 degrees Fahrenheit. These tube are always provided in normalized condition with Charpy Impact V-Notch Test as per the temperature range requirements to assure compatibility with the applicable environments. Low temperature tube also known as LTCS tube abbreviated as LOW TEMPERATURE CARBON STEEL tube . Since heavier wall thickness has an adverse effect on the low temperature impact properties, the size availability is limited in this specification. As per ASME sec II part D ASTM A334 tube and ASME SA 334 tube can be used only up to 375 degrees Celsius. Specific Heat Treatment ASTM A333 Grade 6 and ASME SA 333 Grade 6 are heat treated to achieve normalized condition @ 920 degrees Celsius with controlled microstructure. LTCS tube have high toughness values because of heat treatment (normalizing above 800C and quenching) applied during manufacturing process. Specific I...