Since the ban on the sale of 100 watts and more incandescent lamps in China, the LED lighting market seems to have been shot a strong shot, and sales are gradually rising. However, the relevant departments found in a random inspection that the rate of failure of energy-saving lamps was as high as 68.75%. The reporter recently visited and found that the price of LED lamps of different brands is very different. Since there are no relevant standards at present, the uneven quality of the products also allows consumers to buy and look like flowers. It is said that the energy-saving lamps are not energy-saving. It is understood that the state has encouraged the use of energy-saving and environmentally-friendly products in recent years, and has introduced relevant subsidy policies. Compared with traditional lighting fixtures, energy-saving lamps are increasingly popular among consumers because of their energy-saving and environmentally friendly features. Due to the low entry barrier of the energy-saving lamps market, the process is relatively simple, and the quality of the products is mixed, many consumers cannot identify their advantages and disadvantages. In a random inspection, the relevant departments found that the unqualified energy-saving lamps mainly had problems such as product marking, protection against electric shock, mechanical strength, lamp power, and energy efficiency rating. This not only has the potential to affect human health, but is also likely to cause a risk of electric shock, posing a threat to consumers' lives. The reporter found that the rate of failure of the energy-saving lamps being sampled was as high as 68.75%, and the energy efficiency labels of 11 products did not meet the requirements of the CEL-005 implementation rules. That is to say, the energy-saving lamps in these markets are known as energy-saving, but they are not in line with the publicity. Relevant personnel explained that the main problems in the failure of energy efficiency labeling are summarized as follows: First, the product specification model is inconsistent with the energy efficiency label, second, the product nominal power is inconsistent with the energy efficiency label, and third, the energy efficiency label size does not meet the standard requirements, and the fourth is the actual measurement. The initial luminous efficacy does not meet the required energy efficiency rating requirements. Fifth, the measured initial luminous efficacy does not meet the initial luminous efficacy requirements. The reason is mainly because some small enterprises have low level of technology research and development, and product performance indicators cannot meet the standard requirements. At the same time, the enterprise did not know enough about the energy efficiency label, and even did not pay attention to it, resulting in the energy efficiency label not meeting the requirements. Price confusion business statement is not the same reporter visited the city's several professional lighting market yesterday, most businesses have LED lighting as the main product for sale. However, the reporter found that the price difference of LED lamps of different brands is very different. Take 9-watt LED spotlights as an example, the price ranges from 20 yuan to 200 yuan. “In general, good quality LED spotlights are brighter and more penetrating.†A merchant pointed to his own LED spotlights and told reporters that the price of 60 yuan is brighter than the price of 40 yuan. However, another merchant’s statement is just the opposite. After giving a demonstration to the reporter, the merchant pointed to a slightly darker LED spotlight, indicating that the lighting is softer and more visually comfortable, and the quality is better, so the price is relatively darker. More expensive. In terms of service life, many merchants claim that the life of LED bulbs can reach 20,000 to 30,000 hours, and the life span of families is 8 to 10 years. However, the reporter saw that the shelf life of most LED lamps and packaging is only two years. There is no national standard quality is uneven. Industry experts say that China's LED market enterprises are scattered, the number of brands may be as many as a thousand, but there are not many brands that are truly trustworthy. The quality of products below 30 yuan is difficult to guarantee. "At present, there are three main problems in domestic LED home lighting. First, the use of aluminum radiators, if not attached to the LED chip, directly affects the service life; second, the adjustment of brightness requires a controller, control The quality of the device itself is uneven. Third, for the core technology of driving power supply, only a few companies are willing to increase investment in scientific research." A person in charge of a famous brand lighting Daqing area said. For home use, the most important thing is to use power and life, and these indicators can only be measured with professional instruments. It is difficult for ordinary consumers to identify the quality of products only through sales personnel demonstrations. The staff of the relevant departments said that at present, there is no uniform standard for China's LED industry, and the quality of the products is uneven. As China's semiconductor lighting industry is in the early stage of development, the technological route changes rapidly and the product performance improves rapidly, which makes the pace of some product standards unable to keep up with the development of product performance, and the formulation of basic standards such as reliability test methods requires more in-depth research. Therefore, the development of LED lighting standards requires a longer period.
Coupling for High Pressure Cleaning Machine with Brass, Stainless Steel, Iron material. Fittings include welding, card sets and flared,
Male Coupling Connector Type:
End through connector, straight connectors, tees, elbows, with live nut joints, Swivel joints, plug, transition joints
Composed of dual ferrule fittings: Before the snap ring, after the snap ring nut
Materials commonly used are stainless steel and carbon steel
NPT, PT, G is the pipe thread.
NPT is National (American) Pipe Thread abbreviation belong American standard tapered pipe thread 60 degree, for North America. National standards can be found GB / T12716-1991
Pipe Thread PT is an abbreviation, is 55 degrees sealing cone pipe thread, is a Whitworth thread family, more for Europe and the Commonwealth countries. Commonly used in water and gas pipe industry, defined as 1:16 taper. National standards can be found GB / T7306-2000
G is 55 degrees non-thread sealing pipe thread, is a Whitworth thread family. G represents a threaded barrel mark. National standards can be found GB / T7307-2001
Also thread 1 / 4,1 / 2,1 / 8 mark refers to the thread diameter in inches.
Insiders usually points to refer to the thread size, one inch equals 8 points, 1/4-inch is 2 points, and so on.
G is the pipe thread collectively (Guan), divided into 55, 60 degrees are functional, commonly known as a round tube. That thread processing is made by a cylindrical surface.
ZG commonly known as the funnel, that thread processing by a conical surface made of pipe joints in general are like this, the old domestic thread standard male thread Rc labeled as R
Fitting
Male Coupling,Brass Male Fitting,45 Degree Brass Couplers,Stainless Steel Coupling
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