The market price of Tianjin Hongqiao spiral steel pipe welcomes you. The basic value of the ultimate capacity of the acoustic tube is taken as the load value of the previous stage. When the specified standard is not reached under the large test load, the ultimate capacity of the acoustic tube is taken as the basic value . Do you know the application field of the acoustic tube? It has a wide range of applications, well-known in the country, and interested friends to simply understand the introduction of this area, let us reach a consensus, and look forward to your reading. The marketing department Tianjin Hongqiao sound-absorbing pipe and expansion joint installation preparation) must be familiar with the drawings and installation procedures. It is trustworthy. The problem of sound pipe installation seems to be simple, but there is also a large doorway. For example, there are two types of welding and tying. Both of these need to ensure that there is a parallel between the pipes. However, it is difficult to detect it in the later stage. If we want the strength of concrete for each measurement point, its parallelism cannot be lower than 1%. Honesty and mutual benefit Wujiaqu Acoustic tube Acoustic tube manufacturer Clamped Acoustic tube Acoustic tube Acoustic tube Spot Acoustic tube Specifications Acoustic tube Model Acoustic tube Supply Acoustic tube Raw material Acoustic tube is welded or spiral steel tube After processing, acoustic tubes processed by seamless steel tubes on the market are rare. The reasons are as follows: On the one hand, the cost of acoustic welding pipes made by general welding is relatively low, and it is easier for buyers to accept. The cost of products made of spiral steel pipes and seamless steel pipes is too high. In terms of processing technology, welded pipe is better to process and the equipment required is relatively simple. If spiral steel pipe and seamless steel pipe are processed, the process is more complicated. Steel flower tube and acoustic tube is a product? No, they are different regardless of use, product technology and selection of raw materials. The test is based on specific problems in the following areas: The proliferation of small businesses has caused severe overcapacity, output oversupply, and the continuous decline of acoustic tubes; the local asset-liability ratio of local state-owned acoustic tube companies is too high, and financial costs account for a large portion of the period's expenses. The corporate debt burden is heavy; the industry concentration is low, and the acoustic tube competition is difficult for the industry to self-regulate; the acoustic tube industry has basically lost its ability to raise funds in the stock market; fair competition in the market and the situation of survival of the fittest have not yet formed; 6; Strong; The current loophole of tax refund for acoustic tube export is large, and the export of low-value-added acoustic tube is growing rapidly, which is not in line with the industry; the tax burden on iron mines is too high, and it is in urgent need of rescue. What are the different types of crimping and spiral acoustic tubes? There are many types of acoustic tubes. Among them, the use of crimping acoustic tubes and spiral acoustic tubes is popular. Then let's analyze the two types of acoustic tubes. Similarities and differences. Similarities: Both are used for the same purpose, both are used to test the quality of the pile foundation; both types of acoustic tubes can be completed without welding, and the operation is simple; the joints need to be sealed with rubber rings to ensure sealing Soundness is intact. Cangzhou Lianhe Steel Pipe Acoustic Tube; each tube has a cap at the bottom. Differences: The connection methods are different. Spiral type acoustic tube with screw clasp, flexible connection of screws and nuts is required, no preparation work outside the site, no equipment required, simple and fast; clamp type acoustic tube without screw clasp, two convex grooves at the connection Only need to use special hydraulic pliers to pressurize. The structure of the acoustic tube is different. The spiral type acoustic tube consists of an upper tube, a bottom tube and a middle tube; while a clamp-type acoustic tube has only an upper tube and a bottom tube. Wall thickness specifications are different. Clamping type acoustic tube can't be more than 0mm; while spiral type acoustic tube can be more than 0mm. Several requirements regarding the construction of pile foundation acoustic pipes require concrete cast-in-situ piles to be widely adopted due to their large bearing capacity, small settlement, and their ability to adapt to various terrain and geological conditions and the needs of various major geotechnical structures for the foundation bearing capacity. However, because the cast-in-place pile is a hidden project and the construction process is complicated, various engineering geological problems such as water seepage, quicksand layers, silt layers, collapse holes and shrinkage, as well as concrete pouring during the construction process are often encountered. Pile body defects such as segregation, mud trapping, broken piles, and shrinkage will cause hidden dangers to the normal use of geotechnical structures such as bridges and subgrades. Therefore, it is important to test the quality of concrete cast-in-situ piles. In accordance with the technical requirements of the “Notice on Doing a Good Job in Detecting the Foundation Piles of Passenger Dedicated Railways” (Tie Jian Han  No. 4), non-destructive testing of concrete cast-in-place piles should be performed according to the total number of foundation piles. Non-destructive testing can only be performed when the strength of the foundation pile concrete reaches 70% of the design strength and is not less than 15 MPa. For the quality of concrete pouring piles in areas with abnormal geological changes, the sound wave transmission method should be used for testing and acceptance. During the construction of pile foundation, the construction of Tianjin Hongqiao spiral steel pipe and acoustic tube is the foundation work of pile foundation inspection, and it is the key procedure for the correct detection and evaluation of the integrity of pile foundation, which must be paid great attention. The market price of Tianjin Hongqiao Spiral Steel Pipe welcomes you to fill in the testing reagents, for example, the white part inside the carbon oxide acoustic tube, the Tianjin Hongqiao anticorrosive steel tube, and the black portion inside the oxygen acoustic tube. When the gas and reagent to be detected. Chemical repercussions can occur, causing color changes. That is, once the detected gas passes through the acoustic tube, the change in color onset indicates the presence of the gas and its concentration. A more progressive explanation can be made: the real reason for the change in the onset color is the chemical reaction of the onset of the detection reagent and gas in the acoustic tube, which generates another different substance. Where is the presumably sound pipe installation problem? This problem seems simple, but there is also a large doorway. For example, there are two types of welding and binding in the fixing method of Tianjin Hongqiao Spiral Steel Pipe. Both of these need to ensure that there is a parallel between the pipes. Yes, we do n’t want to get it upside-down and make it difficult for later detection. If we want the strength of concrete for each measurement point, its parallelism cannot be lower than 1%. Interpretation and observation
Tianjin Hongqiao spiral steel pipe market price welcomes you. In the vertical installation, more damaged sound pipes are usually displayed. At this time, the entire bridge will shrink with temperature and temperature, so the sound pipe and the bridge end separate. When designing in the case of a pipe, we must consider multi-point design to truly integrate the sound tube and the entire bridge. In the case of a slope, consider the tilt during the entire design and installation process. The following is the specified size and wall thickness error range included in the JT / T705-2007 standard: outer diameter ± 0% wall thickness ± 5% Reference: What is the difference in tensile strength (MP) of the wall thickness (theoretical error) of the acoustic tube ) ≥315MP Tensile test (elongation) ≥14% Flattening test When the distance between the two flat plates is 3/4 of the outer diameter of the acoustic tube, no cracks should occur. The radius is 6 times the nominal outer diameter, the bending angle is 120 °, the acoustic test tube does not show cracks, hydraulic test, when the sealing water pressure at both ends of the acoustic test tube is 5MP, the acoustic test tube has no leakage and eddy current damage, and the acoustic test tube weld has no trachoma 、 Crack seal test External pressure P = 215S / D No leakage, no deformation of the interface Internal pressure P = 215S / D No leakage, no deformation of the interface The pull test should be able to withstand a pulling force of 3000N at normal temperature, continuous No looseness or fracture vibration test at the connection part for 60min. The test pressure is 2MP, which lasts 100,000 vibrations. The joint has no leakage and shedding phenomenon. The torque test torque is 120N.m for 10min. The joint has no slip hardness test HRB≥90 sounds. Test tube wall hardness experiment can refer to: mechanical properties of acoustic tube and balance sound of experimental detection The inner tube pressure: When concrete pile for infusion tube filled with water in the concrete to reduce the pressure difference of the inner tube, to prevent tube deformation acoustic. Acoustic tube hydraulic test standard: no leakage should be done for each pipe hydraulic test, according to the test pressure test pressure Mpa S-hydrostatic test, test pressure test to calculate P = 2ST / D, of which hydraulic test According to the corresponding standards for small yielding strip steel (Q235 is 235Mpa), 60% of people choose. Stabilizing time: D <508 pressure test time is less than 5 seconds, D ≥ 508 test steel pipe welding seam, steel head and girth weld 4 non-destructive testing should be X-ray or ultrasonic. For ordinary flammable fluids to be delivered to spiral seam steel pipes, 100% SX-ray or ultrasonic testing should be used for heating fluid conveying pipes such as water, sewage, air, steam, etc. Spiral welds should be X-ray or ultrasonic flaw detection (20%) . The reasons for the blocking of the acoustic tube and the causes of the deformation of the acoustic tube due to disposal are the following: the acoustic tube joint or the mouth of the tube and the bottom of the tube are not tightly sealed. During the construction process, please enter the mud or cement slurry to cause the blockage. : During the installation and pouring of the acoustic tube, the joint of the acoustic tube is distorted or deformed due to the distortion or collision of the reinforcing steel bar. The main reason for this is that the thin-walled limestone area was selected, and the punching was not good. When the reinforcement cage was difficult to sink, the unconventional method was used to deform the acoustic tube to block the broken head. Blockage caused by concrete blocks. Deformation and blockage of the acoustic tube brings great difficulties to the detection work, and even the detection cannot be performed. For this reason, when the acoustic pipe is found to be blocked before testing after the foundation pile is poured, effective measures should be taken to ensure that the ultrasonic testing can be performed smoothly. Generally, the following types of pipes are used: the steel pipe is used to reinforce the acoustic pipe, and the pipe is rinsed with high pressure water. , Use a drill with a small drill bit to sweep the hole. Other acoustic tube manufacturers will carry out distribution, processing, warehousing, logistics and other work to advance the "terminal marketing" strategy. Lianhe Steel Pipe is establishing a large-scale processing and distribution center, with multiple good lines such as pinch-type acoustic tubes, spiral-type acoustic tubes, and sleeve-type acoustic tubes, as well as a large open-air freight yard. In addition, I have also established a transportation fleet to truly become an industrial and trade enterprise integrating processing, distribution, financing, and management, and I am determined to show my strength in 2015. What are the problems with sound tube connections? Screw connection should be used for the connection of the acoustic tube: considering the difficulty and efficiency of the installation of the acoustic tube, usually the welding connection method is used, but when non-steel pipe is used as the acoustic tube, the bolt connection and welding method cannot be performed, and other problems will occur. Connection. There are two cases of welding connections, sleeve welding and butt welding. Protrusions such as slag burrs mainly occur during welding, which prevents the self-pressing device from moving up and down the joint: welding is not good, joints are poorly sealed, and slurry leakage may occur. Butt welding may even cause fracture and disengagement at the weld. Tianjin Hongqiao Acoustic Test Tube uses a jack to correct the entire culvert so that its center is on the specified center line. Do you know the application field of the acoustic tube? It has a wide range of applications, well-known in the country, and interested friends to simply understand the introduction of this area, let us reach a consensus, and look forward to your reading. According to the management department, the cause of damage to the acoustic bridges of empty bridges is less than the specified number of years. The main reason is that the bridge acoustic pipes have been corroded after being electrified. In some severely corroded areas, 2-3 years of bridge acoustics are used. The tube will be replaced with a new one. In some areas with severe chemical pollution, the service life of bridge acoustic pipes is about 2 years, which is a fraction of the specified period. The industry revealed that there is an insulated bridge acoustic tube on the market today. This kind of bridge acoustic tube has good safety, low cost and strong operability, and its service life is twice that of ordinary bridge acoustic tubes, which can be called " Perfect bridge acoustic tube. " This bridge acoustic tube is very suitable for use in chemical pollution or sewage treatment. In addition to the corrosion of the bridge acoustic tube by some gases in the environment, the bridge acoustic tube should be inspected regularly during use, and the bridge acoustic tube should be replaced in time. If you have special needs, we can also make bare pipes and joints. User friends can go back and process them by themselves. Okay, let's chat here today, let's continue this topic tomorrow. Honesty and Mutual Benefit Jiamusi Step 1: Fix the first sound measuring tube on the steel cage with iron wire (less than 5mm in diameter) (two wires in the middle, and the top connector must be tied with wire); step: the remaining sound to be connected The test tubes are installed according to steps from step to step. Straighten the required length. Step 1: The top acoustic tube must be covered with a cap to prevent soil and debris from entering the tube. Requirements? The market price of Tianjin Hongqiao Spiral Steel Pipe welcomes you. For the beauty of the kitchen, many households generally inject sound-absorbing pipes. This will bury the hidden danger of gas and should be set up publicly. Assets currently have the view that the formation of smog is mainly caused by the bridge sound tube. However, Zhang Nong, a doctoral tutor and professor at the University of Mining and Technology, proposed in an interview with reporters to actively control pollution caused by bridge sound tube mining and transportation and achieve green mining. However, if the haze is to be controlled, it seems unfair or even impractical to attribute the main cause of the haze to the bridge sound tube. aims
Tianjin Hongqiao spiral steel pipe market price welcomes you. Our acoustic tubes are now mainly used in urban water pipe network systems, urban and rural drinking water pipes, agricultural irrigation pipes, chemicals, chemical fiber, food, forestry, printing and dyeing, pharmaceuticals, light industry, papermaking. , Metallurgy and other industries, such as liquid feed pipelines, post and telecommunications lines, electrical power wire protection sleeves, mine mortar pipelines. It is recommended to consult the consumption of bridge acoustic pipes, both in us and internationally, with the advancement of technology, they are increasingly improved, but technologies such as bridge acoustic oil measurement, bridge acoustic gas measurement, and bridge acoustic tube liquefaction are still to be seen. perfect. Product line Basic knowledge of sound pipe casting Good sound pipe casting uses a good line of resin sand, all using resin sand, lost foam casting, sound pipe casting material is high-quality high-strength cast iron HT250-300, Strong tensile strength, high dimensional accuracy, uniformity, no box buckling, no burrs or burrs on the casting; smooth surface close to precision casting, stable internal structure. Acoustic tubes are now gradually replacing ordinary gas pipes precisely because of their superior quality and excellent quality. With the continuous development, the economy is changing with each passing day, and the demand for living standards is increasing. Every family invites friends and relatives as guests, and at the same time we use acoustic tubes for cooking at home, but there have been many gas worlds in recent years. The main reason is to go and maintain it often. The conditions that we use for acoustic pipes in weekdays, why do they happen? Attention: During construction, the operation of landfill pipelines is not standardized, which leads to excavation. The test can be considered as the time when the loading should be terminated: the anchor head displacement does not converge, the anchor body from the rock or soil layer or the acoustic pipe from the anchor body; the total displacement of the anchor head exceeds the design allowable value; the soil layer sound measurement The displacement increase of the anchor head caused by the subsequent load in the pipe test is more than twice the displacement increase of the upper load. The installation project establishes the business strategy and marketing purpose: adhere to the "value-added for customers, do a ring close to customers"; value-added for end users, focus on details and humanization, think what customers want, urgent customer needs; improve and improve Maintenance and channel maintenance for end users, including processing and distribution, and advance funds. The basic test of the acoustic test tube shall adopt the cyclic loading and unloading method, and shall meet the following requirements.