DIN 51857:1997-03

Отменен

Gaseous fuels and other gases - Calculation of calorific value, density, relative density and Wobbe index of pure gases and gas mixtures — 12 стр.

ICS

75.160.30 Gaseous. Including liquefied petroleum gases / Газообразное топливо

71.100.20 Gases. Including compressed air and hydrogen / Газы промышленного применения. Включая сжатый воздух