ISO 12633-1:2011规定了圆形、方形或矩形热加工空心型材的交货技术要求。它适用于热成型或未经后续热处理的空心型材，或冷成型和后续热处理的空心型材，以获得与热成型产品中获得的同等冶金条件。细晶粒钢通常在正火状态下交付。 ISO 12633-1:2011给出了非合金钢和细晶粒钢的等级、化学成分和机械性能。

ISO 12633-1:2011 specifies the technical delivery requirements for hot-finished hollow sections of circular, square or rectangular form. It is applicable to hollow sections formed hot with or without subsequent heat treatment or formed cold with subsequent heat treatment to obtain equivalent metallurgical conditions to those obtained in the hot-formed product. Fine grain steels are generally delivered in the normalized condition. ISO 12633-1:2011 gives the grades, chemical composition and mechanical properties for non-alloy steels and fine grain steels.