What is ASME SA537 CLASS 2 equivalent?

What is ASME SA537 CLASS 2 equivalent?   Qfsteels produce and export ASME SA537 CLASS 2 equivalent Boiler steel plate. ASME SA537 CLASS 2 equivalent Low alloy and high strength steel plate, heavy plate and wide, heavy plate, Which is a … Continue reading What is ASME SA537 CLASS 2 equivalent?