Terracotta building products (ICS code(s): 91.100.25)

Ministerial Decree No. 499 /2023 (4 pages, in Arabic) mandating the Egyptian standard ES 41-1 for "vitrified clay liner plates part 1: specification"; (5 page(s), in English)

The Ministerial Decree No. 499 /2023 (4 pages, in Arabic) gives producers and importers a six-month transitional period to abide by the Egyptian standard ES 41-1 that establishes the criteria for the acceptance of vitrified clay liner plates used to protectively line or face pipe, culverts, abutments, structures, or appurtenances. Linear plates manufactured shall be known as curved linear plates or flat liner plates. These plates shall be manufactured from fire clay, shale, surface clay, or a combination of these materials that, when formed into liner plates and fired to suitable temperatures, yield a product that is strong, durable, serviceable, and free of objectionable defects. The absorption of liner plates shall not exceed 6%. The liner plates shall be subjected to acid resistance test. These liner plates shall be uniformly vitrified throughout their thickness and have a homogeneous structural texture.

Worth mentioning is that this standard adopts the technical content of ASTM C479-2017(2022)