Recently, the Jiangsu Provincial Center for Disease Control and Prevention released the results of the “100-door decorative materials and free detection of indoor air†activities. According to a free test of 103 households, more than 70% of households have exceeded formaldehyde and TVOC (total volatile organic compounds), and the main bedroom, second bedroom and children's room exceeded the standard. Indoor pollution can not be underestimated, how long is it safe to ventilate after renovation? Yesterday, an environmental lecture on the theme of “Green, Low-carbon Life†was held in the evening paper. Environmental experts and directors of the Ju'an Environmental Protection Consulting Center gave lectures on environmental protection live, which benefited the public.
Case 1 The indoor air of the leukemia family that was sampled was completely exceeded.
Among the families tested this time was a section of Ms. Duan, whose 4-year-old daughter was diagnosed with leukemia last year. The results of the inspection were shocking. Her formaldehyde exceeded 2.4 times and TVOC exceeded 1.6 times. Ms. Duan’s room has been renovated and stayed for 9 years. According to reports, the detection of 5 families of leukemia, the indicators were all exceeded.
The relevant person in charge of the Jiangsu Provincial Center for Disease Control and Prevention said that the indoor air quality of newly-installed houses is still widespread, and the over-standard conditions of the bedrooms are more prominent. People are more likely to be affected by indoor air pollution during sleep.
Expert advice
According to Beijing media reports, nine out of ten children who have been admitted to a hospital in Beijing in a year have been renovated within six months. Environmental experts have said that indoor pollution naturally disappears for 3 to 15 years, and today it is used on the market. The formaldehyde self-test box sold for inspection can be tested by ordinary people. If there is indoor pollution, the ozone released by the ozone machine can effectively reduce the pollution degree.
How to use ozone correctly, environmental experts remind you that different items have different treatment methods: 1 kg of water takes 1 minute, meat processing takes 10 to 15 minutes, children's toys take 20 minutes, cutting board takes 15 to 20 minutes, vegetables and fruits It takes 5 to 10 minutes, the wardrobe shoe takes 20 minutes, and the newly installed room takes 5 to 7 days of continuous circulation every 20 square meters. The room pollution reduction must be closed after the door is closed.
Case 2
11 kinds of vegetables are susceptible to pesticide pollution
According to Di Yulong, vegetables such as leeks, cabbage, rapeseed, green vegetables, mustard, cabbage, cabbage, broccoli, cucumber, green beans and sage are most susceptible to pesticide contamination, while removing pesticide residues with water, rice water and salt water only Can remove 15%, peeling can remove all the surface, fruit and vegetable purifying agent can remove 87%.
Decorative materials and indoor air
Flange is a method of connecting pipes valves, pumps and other equipment to form a piping system.Application: oil,
chemical industry, water conservancy,electric power, boiler, machinery, metallurgy,sanitary, construction etc.
A blind flange is a round plate which has all of the relevant blowholes except center hole, and because of this feature the blind flange is usually used to close off the ends of a piping systems and pressure vessel openings. It also permits easy access to the interior of a line or vessel once it has been sealed and must be reopened.
Without the blind flange it would be difficult to perform maintenance or repairs on a pipeline. The flow would need to be s
hut off at the nearest valve, which could be miles away from the repair area. Valves are also very expensive and are prone to sticking. The blind flange is a much more cost efficient way of sealing a pipe.
Blind Flanges are commonly used in petrochemical, pipe engineering, public services and water treatment etc.
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Flanges Types |
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Slip On Flange ,Welding Neck Flange ,blind flange ,plate flange ,socket welding flange , |
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long welding neck flange ,orifice flange ,loose plate flange |
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Materials |
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carbon steel :ASTM A105 ,A694.A36,Rst37.2,C22.8,SA350 LF2/LF1,Q235,Q345,etc |
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stainless steel :304,304L,316,316L,A182,etc |
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alloy steel :ASTMA182,F11,F12,F60,F22,etc |
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Marking type |
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forged or forging |
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Standard |
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ANSI B16.5/B16.47/B16.48/B16.36,ASME ,MSS SP44,API ,AWWA |
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DIN2527,DIN2566,DIN2573,DIN2576,DIN2641,DIN2642,DIN2655,DIN2627,DIN2628,DIN2631,DIN2632,DIN2633 |
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DIN2634,DIN2635,DIN2636,DIN2637,DIN2638,DIN2673 |
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BS4504/10 |
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Pressure grade |
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ANSI B16.5 B150Lbs, 300Lbs, 600Lbs, 900Lbs, 1500Lbs, 2500Lbs |
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BS4504:PN2.5,PN6,PN10,PN16,PN20,PN25,PN40,PN63,PN100,PN160 |
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JIS:5K,10K,16K,20K,30K,40k,63k |
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Facing |
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RF/M/FM/G/T/RJ |
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Blind Flange,Steel Blind Flange,Forged Blind Flange,Stainless Steel Blind Flange
Shijiazhuang Huize Pipe Fitting Co., Ltd. , http://www.huizegd.com