Specifies the designations and chemical compositions of qualities of zinc ingots with a minimum zinc content of 98,5 % (m/m), obtained by treatment of ores or of other zinc-bearing materials by a process of chemical or electrolytic reduction or by distillation.
Carbon steel tubes suitable for screwing in accordance with ISO 7-1
This second edition cancals and replaces the first edition (1973). Establishes the dimensions and charakteristics of seamless and welded steel tubes for separate series as follows: heavy series, medium series, ligth series 1. ligth series 2. Tabulates dimensions for DN 6 up to and including DN 150 as well as tolerances on the outside diameter.
