YB 4076-1991 Meltable silica refractories used in continuous casting

GB/T 2997-2000 Test method for bulk density, apparent porosity and true porosity of dense shaped refractory products GB/T 2997-2015 Test method for bulk density,apparent porosity and true porosity of dense shaped refractory products GB/T 5072-2008 Refractories—Determination of cold compressive strength GB/T 5072-2023 Refractory products—Determination of cold compressive strength GB/T 5072.1-1998 Dense, shaped refractory products—Determination of cold compressive strength—Part 1:Referee test without packing GB/T 5072.2-2004 Dense shaped refractory products—Determination of cold compressive strength—Part 2:Test with packing GB/T 6901-2008 Chemical analysis of silica refractories GB/T 6901-2017 Chemical analysis of silica refractories GB/T 6901.1-2004 Chemical analysis of silica refractories—Part 1:Determination of loss on ignition-Gravmetric method GB/T 6901.2-2004 Chemical analysis of silica refractories—Part 2:Determination of silicon dioxide—Gravimetric-molybdenum blue photometric method GB/T 6901.3-2004 Chemical analysis of silica refractories—Part 3:Determination of silicon dioxide—Hydrofluoric acid gravimetric method GB/T 6901.4-2004 Chemical analysis of silica refractories—Part 4:Determination of iron oxide—o-Phenanthroline photometric method GB/T 6901.5-2004 Chemical analysis of silica refractories—Part 5:Determination of aluminium oxide—Chromazurol S photometric method GB/T 6901.6-2004 Chemical analysis of silica refractories—Part 6:Determination of aluminium oxide-EDTA volumetric method GB/T 6901.7-2004 Chemical analysis of silica refractories—Part 7:Determination of titanium dioxide—Diantipyrylmethane photometric method GB/T 6901.8-2004 Chemical analysis of silica refractories—Part 8:Determination of calcium oxide and magnesium oxide—Atomic absorption spectrophotometric method GB/T 6901.9-2004 Chemical analysis of silica refractories—Part 9:Determination of potassium oxide and sodium oxide-Atomic absorption spectrophotometric method GB/T 6901.10-2004 Chemical analysis of silica refractories—Part 10:Determination of manganese oxide—Atomic absorption spectrophotometric method GB/T 6901.11-2004 Chemical analysis of silica refractories—Part 11:Determination of phosphorus pentoxide—Molybdenum blue photometric method GB/T 7321-2004 Sample preparation for testing of shaped refractory products GB/T 7321-2017 Sample preparation for testing of shaped refractory products GB/T 10325-2001 Shaped refractory products—Sampling and acceptance testing GB/T 10325-2012 Shaped refractory products—Rule of acceptance,sampling and inspection GB/T 10326-2001 Refractory products—Inspections of dimension appearance and section GB/T 10326-2016 Shaped refractory products inspections of dimension, appearance and section