DIN 24191
Fittings for use in air distribution systems - Lock-seamed or welded sheet steel fittings
废止
发布日期 :
2001-12-01
实施日期 :
DIN 24152
Ducting sections for use in air distribution systems - Lock-seamed sheet steel ducting sections
废止
发布日期 :
2001-12-01
实施日期 :