Jul 06, 2018
ASTM A209 T1, T1a, T1b (Standard Specification For Seamless Carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes Size Range: 1/2 5 Schedules : 20, 30, 40, Standard (STD), Extra Heavy (XH), 80, 100, 120, 140, 160, XXH heavier Grades :