Boiler tubes is a one of seamless pipe. Manufacturing methods is the same as seamless tube, but it has the stringent requirements for manufacture of steel pipes. According to the temperature level,boiler tube is divided into general boiler tubes and high pressure boiler tube.
Boiler Tube,Boiler Seamless Tube,High Pressure Boiler Pipe,Boiler Seamless Steel Pipe Shandong Guanzhou Iron and Steel Group Co., Ltd. , https://www.guanzhouiron.com
LEDinside's latest LED bulb retail price survey by Global Energy Research Group's Green Energy Division showed that the global replacement of 40W LED bulbs in March 2014 fell slightly to about $14.9, with prices falling most significantly in China. The global average price of LED bulbs replacing 60W is basically unchanged, and remains at $20.8.
Analyst Wang Ting pointed out that the global LED bulb price remained stable in March, while more manufacturers entered the smart lighting market. In addition to Philips and Samsung, Osram has also recently launched the LIGHTIFY intelligent control system, which uses wireless transmission as a bridge between mobile devices and lighting fixtures. Currently, a Gateway can control 50 lamps. LG is also working with Daintree to develop built-in ZigBee wireless network LED luminaires. In addition, Cree is actively looking to enter the lighting control system market and develop the SmartCast wireless control platform. In the future lighting market, the combination of various wireless intelligent control systems and lighting has gradually become the mainstream trend.
In March, China’s replacement of 40W commodity prices fell sharply by 14.7, and some of the original commodity prices were lowered. For example, Foshan Lighting 7W bulbs, the price of this month dropped from 4.3 US dollars to about 2.9 US dollars, the bulb luminous flux 450-500LM, provided Two years of quality assurance; another Hyde 5W bulb, luminous flux 450LM, life of 30,000 hours, this month's price dropped from 12.3 US dollars to 4 US dollars. The rise in the exchange rate has also led to one of the reasons for the downward adjustment in the average price.
As for the average price of 40W imported goods in the United States, it also showed a large decline in 7.6 in March. The prices of the original commodities basically showed a steady or falling trend, and some commodity prices fell more obviously. For example, CREE's 6W dimmable bulbs, after being subsidized by EnergyStar, fell to $4.97 in some parts of the United States.
In place of the 60W commodity segment, the price of the Japanese region fell sharply by 14.8 in March to reach US$ 19.2. The prices of the original commodities basically showed a steady downward trend, and some high-priced items were temporarily discontinued, such as the Sharp 10.4W bulb, the original price was about 32.4 US dollars. In the UK and Germany, prices have risen sharply in March, and some of the original commodity prices have increased significantly. For example, the Leonon12W full-circle bulbs have increased their price in Germany from US$20.8 to US$34.8 this month.
Production methods:
①general boiler tube temperature is below 350 ℃, using hot-rolled pipe or cold drawn tube manufacture Steel Pipe.
â‘¡ high-pressure boiler tube is used often in conditions of high temperature and high pressure pipe, the effect of high temperature flue gas and water vapor, oxidation and corrosion. Steel pipe with high rupture strength, high resistance to oxygen corrosion and have good organizational stability.
Boiler tubes purposes:
â‘ general boiler tubes is mainly used to manufacture water wall tubes, tubes in boiling water and super heated steam pipe, super heated steam locomotive boiler tubes, large and small smoke pipe and pipe arch brick.
â‘¡ high-pressure boiler tubes are mainly used to manufacture superheater tubes, reheater tubes, air guide tubes, main steam tubes, etc. for high-pressure and ultra-high-pressure boilers
Category:
General boiler tubes and high pressure boiler tube boiler tubes is exposed to high temperature performance. Boiler tubes in general, or high-pressure boiler tubes according to their use can be divided into a variety of steel pipe.