What is the difference between ASME B36.10M and B36.10 pipes?

ASME B36.10M is the metric version of the standard that specifies the dimensions and tolerances for welded and seamless wrought steel pipes, while ASME B36.10 refers to the same standard in inch units. Essentially, B36.10M provides the same information but in metric measurements, making it more suitable for regions or applications that utilize the metric system. Both standards cover the same types of pipes but cater to different measurement preferences.