YB/T 4857-2020 Semi-silica heat-insulating refractory bricks

Standard Number: YB/T 4857-2020(YB/T4857-2020)
Chinese:半硅质隔热耐火砖
English:Semi-silica heat-insulating refractory bricks

Effective Date:2021-04-01
Standard Applicability:This standard specifies the terms and definitions, grades and shape and size, technical requirements, test methods, quality assessment procedures, packaging, marking, transportation, storage and quality certification of semi-silica thermal insulation refractory bricks. This standard applies to the thermal insulation layer of thermal kilns or direct contact with the flame of the working layer of half-silica heat-insulating refractory bricks.

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