ASTM A335 /ASME SA335,covers chrome moly seamless pipes intended for high temperature service.It is commonly used in the power generation and petrochemical industries including refineries,centrali elettriche,petro-chemical plants,hydrocrackers,cokers,high and super high temperature lines, reheat lines, distillation, oil field services, eccetera.

ASTM A335(or ASME SA335) is the standard specification for seamless ferritic alloy steel pipe for high temperature service. It covers steel grades from P1 to P5, P9, P11, P12, P91. Grades P11/P22 and P91/92 pipes are commonly used in power generation and petrochemical industries.