Hebei Province: quality control checks of plastic pipe was only 23% qualified – market policy – HVAC Industry
The second quarter of this year, Hebei Province Quality and Technical Supervision Organization on the door and window Plastic Profiles, fasteners, engineering rubber, white latex, cement products, plastic pipes and other products for quality 6 random inspection. The results showed that product quality is worrisome, a total of 203 batches of random passing rate was 72.4%. Among them, the lowest passing rate of plastic pipe, only 23%.
Doors and windows with plastic profiles of random 9 batches of 5 batches by passing inspection, the sampling rate of 55.6% qualified. Main problem is the main sections of the drop hammer. Mainly due to: production enterprises in order to reduce costs, deliberately reduced the thickness of the main sections; part of a large number of enterprises in the manufacturing process to add calcium powder and other cheap ingredients, reduce costs, resulting in decreased shock resistance profiles. A total sample of Cangzhou
fastener 13 fastener manufacturers for 13 batches of products pass quality inspection six batches, the sampling rate of 46% qualified. Sample reflects the main problems fastener products slide pilot project failed. The main reason for failed projects: the production company cut corners to reduce costs; Second, process control instability, annealing time is short, to drop the product quality indicators.
Project had taken three kinds of rubber, 41 batches of engineering rubber products, qualified by testing 29 batches, the average pass rate of 70.7%. Among them, the water stop 84.2% of qualified products, failure of major ozone for the hot air aging and aging; highway bridges bearing products pass rate of 57.9%, without a major failure and mechanical properties of permanent marker. Road and Bridge bearings are product sampling rate of 66.75 qualified, unqualified for the mechanical properties of major performance failure.
White latex of sampling eight production batches of 8 white latex products pass quality inspection six batches, the sampling rate of 75% qualified. Adhesive products failing to comply with the compression shear strength index and product identification project.
Total sample of 110 batches of cement products products qualified by testing 96 batches of samples passing rate of 88.2%. In the random check of 14 batches of substandard products, 12 batches of product chloride ion content exceeded. Part of the cement grinding process in cement production and cement in order to increase the early strength, extensive use of grinding aids or mixed with early strength agent. Super offerings which Luquan City Cement Production "are offerings" brand slag cement, Changli County Tateishi source Cement Production "Jieshi" brand chloride ion content of Portland cement is 4.8 times the standard and 3.5-fold.
Plastic pipes of 22 batches of random products pass quality inspection five batches, the sampling rate of 23% qualified. Plastic pipe products, the main issues: First, identify non-compliant plastic tubing. Some manufacturers indicate the manufacturers are not names, product names, specifications and other content; Second, product size failed. Some small businesses poorly equipped, process backward, die accuracy of below standard, pipe extrusion speed does not match the speed and traction, resulting in product thickness, diameter tolerance failure; Third, tensile yield strength, hydraulic pressure test and density dissatisfaction. Mainly extensive use of recycled plastics manufacturer or formula to add a lot of cheap calcium powder, resulting in density tolerance, resulting in reduced strength index products.
For the problems found in sample surveys, Hebei Province Quality and Technical Supervision of Quality Supervision Bureau has instructed municipalities in strict accordance with the Product Quality Law and other laws, substandard product quality in sample surveys of enterprises and the law, deadline for correction. Meanwhile, good quality spot checks of enterprises, intensify propaganda and effectively act as a "Supporting the Excellent, fake shoddy, lead consumption" purposes.
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