Technical Specifications For Calcium Carbide 25/80. Chemical And Granulometric Composition. Name Of Indicators Displacement Dm3/Kg, Norm For Grade 25/80 Not Less Than - 1St Grade 285 Okp Code 2155 31 0230 04, Okp Code 2155 31 0240 02 - 2Nd Grade 265. The Volume Fraction Of Hydrogen Phosphorous Hydrogen (Ph3) In Acetylene Is Not More Than 0.08%. Mass Fraction Of Sulfide Sulfur Is Not More Than 1.2%. The Mass Fraction Of Free Carbon Is Not More Than - Not Standardized. The Mass Fraction Of Calcium Oxide (Cao) Is Not Standardized. The Mass Fraction Of Ferroalloy Is No More Than 1.0%. Mass Fraction Of Pieces: %, No More Than 100 Mm - Ots, From 80 To 100 Mm - 10%, From 25 To 50, Less Than 25 Mm - 7%, Including Less Than 2 - 2%. Gost 1460-2013
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