![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
The reporter learned from the National Standardization Management Committee that on September 21, the People’s Republic of China's National Standard Approval Announcement No. 4 (Total No. 159) was officially issued in 2010, of which GB25035-2010 “Dimethyl Ether for Town Gas†will be published next year. Formally implemented on July 1. The reporter learned from the interview that the issuance of national standards has disappointed dimethyl ether enterprises. Because the National Standard for Dimethyl Ether from Town Gas clearly stipulates that dimethyl ether can only be burned as a town gas, and it is required to be used exclusively for special bottles. This means that incorporation of liquefied gas, which is the largest application market for DME producers, is facing **, and the DME industry must accelerate the reshuffle.
As early as January 1, 2008, the industry standard for "Dimethyl Ether for Town Gas" released by the Ministry of Construction has been implemented. However, the proportion of dimethyl ether and liquefied gas blending is facing regulatory issues, which restricts the promotion and application of dimethyl ether for gas. For example, in March 2008, the General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ) issued the "Notice on Relevant Problems of Cylinder Filling," which explicitly prohibits the addition of dimethyl ether to liquefied gas. For a long time, the lack of national standards has caused the application of dimethyl ether in the field of civil gas to face “encirclement and interception.†DME enterprises are looking forward to the promulgation of national standards so that they have a legal status as civilian fuels.
According to one of the national standard editors, Professor Yu Gongqian of China Municipal Engineering Research Institute North China Design and Research Institute, the national standard stipulates that the quality of dimethyl ether used in town gas is ≥99.0% and methanol is <1.0%, which means that Burn, and special bottle. This again triggered the dimethyl ether enterprise hot discussion.
Wang Hongxing, sales manager of Shandong Yuhuang Chemical Co., Ltd., told reporters that 90% of dimethyl ether was blended with liquefied gas, and currently the market is using liquefied petroleum gas cylinders mixed with dimethyl ether. If pure burning, it will face the problem of market re-promotion. Used in town gas, consumers have known that dimethyl ether is not as resistant to burning as liquefied gas, and promotion is difficult; industrial applications have not yet been promoted. At present, the domestic production capacity of dimethyl ether has reached 6 million to 8 million tons/year, and the production capacity is so great. If it is limited to pure burning, it will be very unfavorable for its promotion and application.
According to Jing Yuguo, general manager of Hebei Kaiyue Group, whose dimethyl ether production capacity reaches 1 million tons/year, from the current situation, the process of pure burning promotion still needs a process. Zou Benzheng, the assistant director of the New Austrian Group, believes that the marketing of pure burning is a little bit troublesome, but it can be turned to the chemical industry in the future.
According to Zeng Xiangzhao, member of the Liquefied Petroleum Gas Bottle Branch of the National Gas Cylinders Standardization Technical Committee and a senior engineer of Guangdong Yingquan Steel Products Co., Ltd., the current dimethyl ether utilization rate is only 30%, and the promulgation of national standards will speed up the industry reshuffle. For dimethyl ether companies, before the standard was formally implemented, the development of a pure burning market became a top priority.
A high pressure tube is a tube that can withstand pressure. It is used to transport the liquid. There are many kinds of pipes, such as steel tubes, copper tubes, stainless steel tubes, and so on. High quality carbon structural steel and alloy structural steel high pressure pipe are mainly used for manufacturing steam boilers and pipes with high pressure and above pressure.
High pressure Steel Pipe and stainless steel seamless steel pipe, these boiler tubes work under high temperature and high pressure, and the pipe will be oxidized and corroded under the action of high temperature smoke and steam. Therefore, the steel pipe has high lasting strength, high oxidation resistance and good organization stability.
The high pressure pipe occupies an important position in the development of the steering pipe of the hydraulic power steering system.
Steel number is: high quality carbon steel steel steel number 20G, 20MnG, 25MnG; alloy structural steel steel 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG, 12Cr3MoVSiTiB, etc.; rust resistant steel commonly used 1Cr18Ni9, 1Cr18Ni11Nb high pressure pipe in addition to chemical composition and mechanical energy, to do water pressure test, to make expansion. Oral and flattening tests. The steel pipe is delivered in heat treatment state.
In addition, the microstructure, grain size and decarburization layer of finished steel pipe also have certain requirements. Seamless pipes for geological drilling and oil drilling and control are used for drilling underground wells in order to ascertain the structure of underground strata, underground water, oil, natural gas and mineral resources.
The exploitation of oil and natural gas can not be separated from the drilling, and the geological drilling and controlling of the seamless steel pipe used for oil drilling is the main equipment of the drilling, which mainly includes core outer tube, core tube, casing, drill rod and so on.
Because the drilling pipe has to work deep into the depth of several kilometers, the working conditions are very complex, the drill rod is subjected to tensile, pressure, bending, torsional and unbalanced impact loads, and it is also worn by mud and rock. Therefore, the pipe must have enough strength, hardness, wear resistance and impact toughness, steel pipe. The use of steel "DZ" (Geological Chinese Pinyin head) is represented by a number of steel yield points. The commonly used steel numbers are DZ45 45MnB, 50Mn; DZ50 40Mn2, 40Mn2Si; DZ55 40Mn2Mo, 40MnVB; DZ60 40MnMoB.
The steel pipes are all delivered in heat treatment.
Petroleum cracking pipe: seamless tube for furnace tubes, heat exchanger tubes and pipes used in petroleum refineries. Commonly used high quality carbon steel (10, 20), alloy steel (12CrMo, 15CrMo), heat resistant steel (12Cr2Mo, 15Cr5Mo), stainless steel (1Cr18Ni9, 1Cr18Ni9Ti) manufacturing. In addition to the chemical composition and various mechanical properties, the steel pipe should also ensure water pressure, flattening, flaring and other tests, as well as surface quality and non-destructive testing. The steel pipe is delivered under heat treatment.
Stainless steel pipe: hot rolled stainless steel tubes of various stainless steel, cold rolled stainless steel pipes, widely used in oil, chemical equipment pipes and all kinds of stainless steel structures for various purposes. In addition to ensuring chemical composition and mechanical properties, all steel pipes used to withstand fluid pressure should be qualified for water pressure testing. All kinds of special steel pipe should be guaranteed according to the stipulations.
High pressure rubber tube has non-toxic, environmental, physiological inertia, UV resistance, ozone resistance, high temperature resistance (-80 to 300 degrees), high transparency, strong resilience, compression resistant permanent non deformation, oil resistance, stamping, acid and alkali resistance, abrasion resistance, refractory, voltage resistance, electrical conductivity and so on.
High pressure metal tubes have high lasting strength, high oxidation resistance and corrosion resistance, good tissue stability and sufficient strength, hardness, wear resistance and impact toughness.
High Pressure Tubing,High Pressure Hose,High Pressure Rotary Hose,Hydraulic Hose High Pressure
HeBei GuangHao Pipe Fittings Co .,LTD (Cangzhou Sailing Steel Pipe Co., Ltd) , https://www.guanghaofitting.com