Beijing waterproof coating was seized in Shijiazhuang on June 29, 2004 a batch of waterproof coatings provided by a Beijing company to Shijiazhuang Jianshe Street overpass project were seized by Shijiazhuang Yuhua District Bureau of quality and technical supervision on June 17 due to suspected quality problems
on June 18, we received a clue that the Jianshe Street overpass bridge project, which is about to be completed at the intersection of Huainan road and Jianshe street, has the problem of using the non-standard waterproof coating produced by Beijing No.1 company, which may bury potential safety hazards for the use of the bridge
subsequently, it was learned from the law enforcement section of Yuhua District Bureau of quality and technical supervision that 40 barrels of 8 tons of waterproof coating at the project site had been seized according to law on June 17 due to suspected quality problems
it is understood that the full name of the waterproof coating is "zt-408 polymer modified asphalt road and bridge waterproof coating". The manufacturer is Beijing Zhongtong new building materials Co., Ltd., and the product standard is "qb/". The brief introduction of the product says that the product "is the most ideal waterproof material in China at present"
according to the investigation conducted by Yuhua District Bureau of technical supervision to Tongzhou District Bureau of quality and technical supervision of Beijing, "the zt-408 special waterproof coating for roads and bridges produced by Beijing Zhongtong new building materials company is in the process of formulating enterprise standards and has not been filed with Tongzhou District Bureau of quality and technical supervision"
according to this, the staff of the standards section of Yuhua District Bureau of quality and technical supervision pointed out that "being developed" and "issuing standards without filing with local relevant departments if the pendulum does not rotate clockwise" are two different concepts. According to relevant national laws, "if there are no national and industrial standards for the products produced by an enterprise, the enterprise standards shall be formulated as the basis for organizing production. The enterprise's product standards shall be reported to the standardization administrative department of the local government for the record.". The provincial impact testing machine can synchronously display the experimental force, peak value, displacement, speed, experimental state, different models and different designs, and there are many kinds of material selection experimental curves; The impact testing machine (auto parts testing machine) has the functions of limit, automatic overload protection, automatic shutdown of sample fracture, etc. the specification clearly states that "enterprises are prohibited from producing without standards"
it is also understood that the waterproof coating provided by the company has not been fully available for the development of data diagnosis methods