According to the news from the forum, the total geological resources of coalbed methane in China is expected to reach more than 3,600 billion cubic meters, which is equivalent to the current domestic natural gas geological resources. After more than 20 years of brewing and development, with the successful development of the 2004 Qinshui area as a symbol, the development of coalbed methane gas was quickly rolled out in the east of Jindong and was seen as a major breakthrough in alleviating the energy shortage in China. In order to support the exploitation of coalbed methane in China, relevant departments have formulated a series of preferential policies. This year, the capital community's enthusiasm for CBM has suddenly increased.
Since 2006, China has introduced a number of policies to support the development of the CBM industry, such as the implementation of the VAT on the CMM drainage enterprises. At present, the number of CBM wells in China has increased significantly, the exploration and development direction of CBM resources has gradually become clear, and remarkable results have been achieved in external cooperation. New technologies, especially horizontal well technologies, have achieved breakthroughs in their application.
“The outside world is overly optimistic about its prospects and there are signs of false prosperity.†Yang Luwu, president of Orion Energy International Co., Ltd., said that although the industry has just started, there are already bubbles in the industry. Blind investment and repeated construction are full of them.
Yang Luwu is the technical leader of the Qinshui CBM project in Shanxi. He bluntly stated that the biggest roadblocker for CBM mining remains a technical problem. The current technology can only solve the mining of a small part of coalbed methane resources, and the utilization rate is very low. It is the current state of energy shortages that has given rise to high hopes for coalbed methane. Instead, it has overshadowed the weakness of technology itself.
The same sentiments as Yang Luwu sent out were Hu Aimei, deputy general manager of China United Coalbed Methane Co., Ltd. China United Coal is the first company in China that has the right to use CBM for foreign cooperation. The company currently has 30 contracts with foreign companies. “The overall CBM industry is overheated. In fact, there are still many problems. It is not gold everywhere,†said Hu Aimei. “At present, being overly pessimistic and optimistic are not conducive to sound development of the industry.†She cited as an example, “a hot†one. The obvious feature is that the phenomenon of grabbing the site is prominent. Coal and coalbed methane companies have been fighting for CBM resources because the mode of coordinated mining has not yet been established.
Hu Aimei said that although the market’s demand for coalbed methane is far greater than supply, the development of industrialization still faces challenges. It is manifested as the coordinated development mode between coalbed methane development and coal mining has not yet been established, the investment channels are not smooth, and the technological innovation capability is Infrastructure is weak and so on.
In addition, what worries Hu Aimei is that China's CBM field is not large enough. At present, it is necessary to make several large-scale models for real large-scale commercial applications.
Liu Lianhe, Director of the Exploration Department of the Ministry of Land and Resources, stated that China's CBM industry policy is gradually in place and will promptly step into the industrialization track. With the development of the coalbed methane industry, the relationship between coal mines and coalbed methane production enterprises will be the key to the future.
In addition to the urgent problems that need to be solved, such as technology and mineral rights ownership, the young coalbed methane industry is also a major bottleneck. In fact, CBM investment is in an embarrassing situation: On the one hand, various funds are flocking, and on the other hand, the connection between capital and industry chain is not smooth. Businesses are calling for a solution.
Stamping welding elbow, it is the same material with the tube sheet metal stamping die with a half block ring bend, and then the two half ring elbow for welding. Because of various pipe welding standards are different, usually by the group on the fixed semi-finished products of the factory, on-site construction according to the pipe weld level of welding, therefore, also known as the two halves of the welding elbow.Pipe installation of a commonly used in connection with the pipe, connecting the two nominal diameter of the same or different tubes, so that the pipe to make a certain angle turn.
Photo of our Pressed Bend:
Advantage
The stamping production efficiency is high, and the operation is convenient, easy to realize mechanization and automation, this is because the stamping die and stamping equipment is to rely on to complete the processing, ordinary press trips as per minute
Up to several tens of times, high-speed pressure to hundreds of times per minute or more, and every time the punch stroke may get a punch.
The stamping generally without cutting scrap generated, material consumption is less, and does not need to other heating equipment, so it is a kind of material saving, energy saving and processing, stamping parts of the cost is low.
The stamping process the size range is larger, more complex shape parts, such as a small clock stopwatch to auto longeron, covering parts, stamping cold material deformation hardening effect and punching strength and stiffness are higher.
The stamping die due to ensure the stamping part dimension and shape precision, and generally does not destroy the stamping parts of the surface quality, and die life is generally longer, so stamping quality stability and interchangeability good, has the characteristic of "identical".
The forming process of stamping elbow is complicated, and it needs to be welded according to different materials and uses, and is gradually formed under certain pressure. Stamping elbow molding need according to a certain process, strictly comply with the corresponding process, otherwise the production of stamping elbow will produce quality problems. According to the need, a circular ring shell can be cut into 90 6 degree elbow or 60 elbow or other specifications of the elbow, the process is applied to the
Any specification of large scale, with the diameter of the elbow and the diameter of the elbow is larger than that of the 1.5D, is an ideal method for the manufacture of large push bends.
This process molding method used in the production of different bends, in different areas to show good use value, so that the process in the production of different bends with good value reflected.
The advantages of the forming process of large stamping elbow are mainly shown in the following aspects:
Stamping elbow
One need not tube for raw materials, save the tube making equipment and the mold expense and can get arbitrary large diameter and wall thickness relatively thin push of elbow. The raw material of the punching elbow is special, and the raw material of the pipe blank is not needed to be added.
The stamping elbow blank is flat or developable surface, and thus a simple material, to ensure accuracy. Assembly welding is convenient, in the processing of easy control of raw materials, simple operation, no complicated process and welding and assembly is convenient.
Because of the above two reasons, can shorten the manufacturing cycle and the production cost is greatly reduced. Because no special equipment is needed, especially suitable for the field processing of large stamping elbow.
Material
Stamping elbow material is carbon steel, stainless steel, alloy steel and other materials. Carbon steel stamping elbow is cheap, the use of large. The alloy steel elbow is used in a special position on the.
Stainless steel stamping elbow is different from carbon steel elbow is the main material of different materials, the chemical composition will keep the elbow for a long time will not rust, is not easy to be corroded.
Stainless steel, stainless steel, corrosion resistance as the main characteristics, and the chromium content of at least 10.5%, the maximum carbon content of not more than 1.2% of the steel.
Carbon steel: A234 WPB ASTM/ASME, WPC
Alloy: A234 WP 1-WP 12-WP ASTM/ASME 11-WP 22-WP 5-WP 91-WP911 15Mo3, 15CrMoV, 35CrMoV
Stainless steel: A403 WP 304-304L-304H-304LN-304N ASTM/ASME
A403 WP 316-316L-316H-316LN-316N-316Ti ASTM/ASME
A403 WP 321-321H ASTM/ASME A403 WP 347-347H ASTM/ASME
Low temperature steel: A402 WPL3-WPL ASTM/ASME 6
High performance steel: A860 WPHY 42-46-52-60-65-70 ASTM/ASME
Cast steel, alloy steel, stainless steel, copper, Aluminum Alloy, plastics, PVC, argon Ge Lek, PPR, RFPP (reinforced polypropylene) etc..
Stamping elbow thickness standard
After the arrival of the scene of the stamping elbow, the thickness of the stamping elbow while improving the process, the average thickness of the thick wall of the stamping elbow to seriously exceed the standard, need to be calculated according to the actual measurement.
In the process of calculation conducted among, wall thickness of the general accounting process, general pipeline equipment, general interface thrust and the thrust is qualified of, of course, docking pipeline whether or not to set up a reasonable. For pipeline calculation of punching elbow should stress strengthen coefficient and flexible coefficient, of course, re accounting check when, the consistency of calculating stress strengthen coefficient of pipe wall thickness, this by the weight of the elbow were reduced wall thickness is stamping elbow along the center line were carried out straight, ensure stamping elbow straight weight and stamping elbow weight, stamping elbow for stamping elbow weight conversion of wall thickness.
Pressed Bend
Bend Tube Without Flanges,Bend Fitting With Flanges,Bend Pipe Without Flanges,Pressed Bend With Flanges
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