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AQSIQ released the the construction waterproofing membrane product quality in 2012 linkage supervision and inspection results
From May 2012 to October, the State General Administration of Quality Supervision, Inspection and Quarantine organization of local Bureau of Quality and Technical Supervision carried out construction waterproofing membrane product quality supervision and spot checks linkage. Product sample pass rate of 89.3%.
The spot checks in accordance with the relevant national and industry standards, inspection items include building sheets for waterproofing products soluble content, permeability, heat resistance, the maximum peak tension (pull), the maximum peak elongation, tear elongation at break, low temperature flexibility, low-temperature bending temperature, cold bending resistance, heat resistance, and then peel strength of the seam peel strength, peel strength, self-adhesive bitumen, nail shank tear strength, the tread base material, thermal aging, heating the amount of stretching, hot air aging, ozone aging, holding adhesive 39.
The 861 batches of products produced by 579 companies in 17 provinces (autonomous regions and municipalities) supervision and checking of 769 batches of qualified products, product sample pass rate of 89.3%.
Spot checks found that building sheets for waterproofing products related to the main quality problems soluble content of 13 batches of substandard, the maximum peak tension (maximum tension) 15 batches of substandard, tensile strength at break of 8 batches failed, the maximum peak elongation (including maximum tensile elongation) project with 14 batches of substandard seam peel strength of 18 batches of substandard, 8 batches of substandard peel strength, peel strength of self-adhesive asphalt project 5 batches failed, adhesive holding four batches of substandard, low temperature flexibility 29 batches of substandard, heat resistance 8 batches of substandard tires based materials 3 batches failed, ozone aging project batches failed, thermal aging 43 batches of substandard heating expansion volume batches failed, hot air aging Item 5 batches of substandard.
The spot checks in accordance with the relevant national and industry standards, inspection items include building sheets for waterproofing products soluble content, permeability, heat resistance, the maximum peak tension (pull), the maximum peak elongation, tear elongation at break, low temperature flexibility, low-temperature bending temperature, cold bending resistance, heat resistance, and then peel strength of the seam peel strength, peel strength, self-adhesive bitumen, nail shank tear strength, the tread base material, thermal aging, heating the amount of stretching, hot air aging, ozone aging, holding adhesive 39.
The 861 batches of products produced by 579 companies in 17 provinces (autonomous regions and municipalities) supervision and checking of 769 batches of qualified products, product sample pass rate of 89.3%.
Spot checks found that building sheets for waterproofing products related to the main quality problems soluble content of 13 batches of substandard, the maximum peak tension (maximum tension) 15 batches of substandard, tensile strength at break of 8 batches failed, the maximum peak elongation (including maximum tensile elongation) project with 14 batches of substandard seam peel strength of 18 batches of substandard, 8 batches of substandard peel strength, peel strength of self-adhesive asphalt project 5 batches failed, adhesive holding four batches of substandard, low temperature flexibility 29 batches of substandard, heat resistance 8 batches of substandard tires based materials 3 batches failed, ozone aging project batches failed, thermal aging 43 batches of substandard heating expansion volume batches failed, hot air aging Item 5 batches of substandard.