The cold working methods of steel pipes mainly include cold drawing and cold rolling. The raw materials of cold-rolled steel pipes can be hot-rolled seamless steel pipes or welded pipes. The common characteristics of the cold working method of steel pipes are high dimensional accuracy and good surface roughness. It can produce very thin (up to 0.05~0.01mm) thin-walled tubes and very thin (up to 0.3~0.1 mm in diameter) capillaries.
Seamless Steel Pipe is a kind of pipe with hollow section, which is widely used to transport fluids, such as oil, natural gas, gas, water and some solid materials. Compared with solid steel such as round steel, steel pipe is light in weight when its bending and torsional strength is the same. It is a kind of economic section steel, which is widely used in pipeline engineering.
Honed Steel Tubing,Cold Drawn Steel Tubes,Cold Rolled Precision Steel Tubing,Astm A1045 Hollow Anchor Rod Shandong Guanzhou Iron and Steel Group Co., Ltd. , https://www.guanzhousteel.com
Xiao Hongqing, executive director of the Taiwan Lighting Society, pointed out on the 22nd that in August 2013, the light-to-heat ratio of LED lighting reached 60:40, and the product of up to 180 lumens per watt is mature in marketization, which will start the explosive demand for LED lighting, and then the industry will win. The key will depend on packaging and design capabilities, while Taiwan's LED die and packaging capabilities are better than those of the mainland, and cross-strait cooperation opens up new market opportunities.
Xiao Hongqing was invited to give a speech at the temporary meeting of LED Lighting Alliance members yesterday as a professor of Taiwan University. He pointed out that in the fourth quarter of last year, Jingdian and Yan were all introducing high-quality LED dies such as photothermal ratio, luminous flux and light efficiency. It is estimated that the market will be tested in about half a year, and it will mature in August this year. At that time, it will be able to launch LED lighting products and prices that satisfy consumers. He also stressed that even Crystal and Helium will encounter competitors such as Cree, Lumleds, and Nichia, but the demand point will come out, and suppliers with 200-250 lumens/$1 will benefit.
Xiao Hongqing further pointed out that the NDRC is actively formulating standards for LED components and lighting components. It is expected that Guangdong will propose 21 specifications in the LED lighting standard optical component specification conference. Its LED lighting specification standards are leading Taiwan. LED lighting is released and has a market, but Taiwanese manufacturers have the technology and still have the winning conditions.
He stressed that Taiwan's grain technology is in place, and Taiwan's packaging plant has mature COB capacity, and its stability is higher than that of the land plant. Moreover, it is catching up with the SMC technology launched by Japan's Nichia, so the demand for LED lighting broke out in the second half of this year. As long as you master the packaging capabilities, design capabilities, and catch up with the existing standard market in the mainland, it is very profitable to follow the LED lighting.
Xiao Hongqing: LED demand will break out in August