... (ASME A790)6. Size: a) O.D.: 6 to 508mm b) Schedule: 5/5S, 10/10S, 20/20S, 40/40S, 80 ... , paper, fertilizer, fabric, aviation and nuclear) b) Fluid, gas and oil transport c) Pressure and heat transmission d) Construction and ornament e) Boiler heat exchangers ...