GB/T 22590-2021 Refractory castables for rolling mill reheating furnace

GB/T 22590-2008 Refractory castables for reheating furnaces

GB/T 4513.2-2017 Monolithic(unshaped) refractory products—Part 2:Sampling for testing GB/T 4513.5-2017 Monolithic(unshaped) refractory products—Part 5:Preparation and treatment of test pieces GB/T 4513.6-2017 Monolithic(unshaped) refractory products—Part 6:Measurement of physical properties GB/T 6900-2006 Chemical analysis of alumina-silica refractories GB/T 6900-2016 Chemical analysis of alumina-silica refractories GB/T 6900.1-1986 Fireclay and high-alumina refractories—Determination of loss content on ignition—Gravimetric method GB/T 6900.2-1986 Fireclay and high-alumina refractories—Determination of silicon dioxide content—Gravimetric-molybdenum blue photometric method GB/T 6900.3-1986 Fireclay and high-alumina refractories—Determination of iron oxide content—o-Phenanthroline photometric method GB/T 6900.4-1986 Fireclay and high-alumina refractories—Determination of aluminium oxide content—EDTA volumetric method GB/T 6900.5-1986 Fireclay and high-alumina refractories—Determination of titanium dioxide content—Hydrogen peroxide photometric method GB/T 6900.6-1986 Fireclay and high-alumina refractories—Determination of calcium oxide content—EDTA volumetric method GB/T 6900.7-1986 Fireclay and high-alumina refractories—Determination of magnesium oxide content—Xylidyl blue Ⅰ-CTAB photometric method GB/T 6900.8-1986 Fireclay and high-alumina refractories—Determination of calcium oxide and magnesium oxide content—Atomic absorption spectrophotometric method GB/T 6900.9-1986 Fireclay and high-alumina refractories—Determination of potassium oxide and sodium oxide content—Atomic absorption spectrophotometric method GB/T 6900.10-1986 Fireclay and high-alumina refractories—Determination of manganese oxide content—Ammonium persulfate photometric method GB/T 6900.11-1986 Fireclay and high-alumina refractories—Determination of phosphorous pentoxide content—Molybdenum blue photometric method GB/T 15545-1995 Unshaped refractory—Packing, marking, transportation and storage GB/T 15545-2020 General rules for packing,marking,transport,storage and quality certificates of unshaped refractory GB/T 21114-2007 Chemical analysis of refractory products by XRF—Fused cast bead method GB/T 21114-2019 Refractories—Chemical analysis by X-ray fluorescence(XRF)—Fused cast-bead method GB/T 30873-2014 Refractory materials—Determination of thermal shock resistance GB/T 36134-2018 Monolithic(unshaped) refractory products—Determination of resistance to explosive spalling during heating YB/T 4130-2005 Refractory materials-Determination of thermal conductivity (Calorimeter) GB/T 6900-2025 Chemical analysis of alumino-silicate refractories YB/T 4130-2026 Abrasion-resistant Materials Thermal Conductivity Test Method (Water Flow Plate Method)