Quzhou Nanxun 20 # petroleum cracking pipe specification table Industry breakthrough oil drilling pipe (YB528-6 is a seamless pipe used for internal thickening or external thickening at both ends of oil drilling. There are two types of pipes: wire and non-wire. The wire tube is connected with a joint, but the non-car wire tube is butt welded with the tool joint. Many people in the installation project Luzhou Nanxuan hope that they can better create for themselves, and sometimes the home needs to create more, need Better progress, and the things I use in my life are getting more and more advanced, everyone can give themselves a good opportunity to choose better materials and better consumables. Now fertilizer tubes are common channels in life. Ductile iron is also a kind of material with good performance. The material of the fertilizer tube is a material obtained after Qiuhua and incubation. The advantage performance is obvious, that is, it effectively improves the mechanical properties, such as toughness. It has good plasticity, and its comprehensive performance is closer to that of steel. The scope of use of chemical fertilizer tubes is also widely used. For some high-pressure fluids, it can be transported using chemical fertilizer tubes, which are resistant to corrosion It is well divided, and the function of anti-scaling is also well divided. The original chemical fertilizer tube steel has undergone simulated corrosion tests. Industrial hanging pieces and physical anatomy tests have proved that it is suitable for high temperature, high pressure, and chemical resistance of the fertilizer and petroleum industries. Hydrogen, nitrogen, ammonia and hydrogen-resistant equipment systems have better corrosion resistance than ordinary chromium-molybdenum steel. The refinery heating furnace uses domestic 10MoWVNb steel as the material of the furnace tube and the test conditions. Mechanical properties of the steel, The test of corrosion resistance, processing performance, economy and safety of use shows that it is feasible and economical to replace the commonly used Cr5Mo steel with reasonable cost. The high-pressure seamless pipe for the brilliant casting fertilizer equipment in Ningbo (GB 79-2000) ) Is a high-quality carbon structural steel and alloy steel seamless pipe suitable for chemical equipment and pipelines with an operating temperature of -40 ~ 400 ° C and an operating pressure of 10 ~ 30Ma. Quzhou Nanxun 20 # petroleum cracking pipe specification sheet industry breakthrough cold Outer diameter of pipe (mm) high quality Before the 1970s, the steel used in some oil pipelines in China was a fertilizer-only pipe. At present, these pipelines in service are causing pipelines due to corrosion, abrasion, and accidental damage. In order to ensure the numerical simulation of in-service welding repair of oil pipelines in pipelines, the pipeline in-service welding is late in China, and basic theoretical research is carried out. It is not systematic, and there are few reports on related papers. Implementation standards
Quzhou Nanxun 20 # Petroleum Cracking Pipe Specification Sheet Industry Breakthrough Based on the calculation results, the stress distribution laws of core concrete and steel tubes with different sections of axially compressed square steel tube concrete short columns are analyzed and compared. The results show that the compressive stress of the concrete in the hole is higher than that of other core concrete, and the stress distribution of the square steel tube p-reinforced concrete core concrete is uneven, and as the opening diameter increases, oil cracks appear. Lateral stress in the middle of chemical pipeline siding increases first and then decreases. Based on the test data, the calculation formulas for the bearing capacity and the axial stiffness of the reinforced square concrete-filled steel tubular short columns are proposed and compared with the relevant specifications. The calculated results agree well with the experimental data. On this basis, the finite element analysis of axially-compressed square concrete-filled steel tubular short columns was carried out, the feasibility of the calculation was verified, and a design scheme was proposed. four. Axial compression tests were performed on five P-shaped reinforced concrete square steel tube concrete columns. Before the test, the quality of the concrete was tested with ultrasonic waves. The results show that P can effectively bond with concrete and the quality of concrete is good. The test results show that the slenderness ratio is the main factor affecting the axial compressive properties of composite long columns. A practical calculation method for flexural rigidity and stable bearing capacity of p-reinforced square concrete-filled steel tube columns is proposed, which is in good agreement with the test results. 5. p is suitable for square steel tube concrete arch bridge. The effects of phosphorus on the mechanical properties of concrete-filled steel tube arch bridges were analyzed. The results show that the incorporation of P into the square steel tube concrete arch bridge can effectively improve the bending stiffness and ultimate bearing capacity of the arch bridge. Compared with the square steel tube concrete arch bridge, the addition of p increases the steel content of the arch bridge. Design and application of large diameter petroleum cracking special pipe centrifugal casting machine Large diameter petroleum cracking special pipe is suitable for high temperature, high pressure and corrosive environments. Not only are strict requirements on smelting and casting of billets, but also uniform and sufficient plastic deformation. At present, there are only a few multinational steel companies with good capabilities in the world. The processes used are: 1. The basic process of a cycle rolling is: heating, pressure perforating, and continuous casting of continuous cast slabs to check the performance of the finished steel pipe. The product quality and characteristics of North China Heavy Industry's good forged and boring seamless steel tubes are analyzed. The results show that the quality of forged and bored seamless steel pipes is stable and reliable, and various performance indicators meet or exceed the requirements of relevant standards. Large diameter thick wall seamless steel pipe (hereinafter referred to as seamless steel pipe) is an important part of power station boilers and is widely used in high temperature and high pressure working environments such as thermal power units, special pipes for petroleum cracking, and petrochemical industries. With the rapid growth of domestic power demand, the demand for seamless steel pipes has greatly increased. This paper introduces the actual achievement of the quality goals. Among them, there are 83 boiler steel pipes in order to promote and improve the quality of domestic high-energy boiler steel pipes and fittings. 1SA 335 / 6-P22 / F22 Boiler Steel Pipes and Fittings Order Technical Conditions This batch of boiler steel pipes and fittings is used in the reheating section of coal-fired power stations. The total weight is 42 295t, and the ordering basis is ASTM / A SME335P22; there are 56 fittings. The total weight is 6 2t, and the ordering basis is the additional ordering technical conditions in the ASTM / A SMESA 336F22CL3 engineering standard. In view of the adverse effects of counterfeit and inferior boiler steel pipes in the international field, and the use in the United States due to its low amount of alloy elements, high strength, and comprehensive mechanical properties Good and cheap, so it is widely used in industry. The room in a certain product of the factory is a 43 2mm oil pipe. Decided to relocate the plant as a whole, and approved the implementation of a petroleum cracking pipe product structure optimization project. After the completion of the petroleum cracking pipe product structure optimization project, it will mainly be used in automobile, aviation, military, high-pressure boiler tubes, and oil casings. It will form a synergistic complement with the seamless steel pipe plant 140 unit to improve and strengthen steel pipes. The overall competitiveness of the product. The main research contents of this article are as follows: 1 The ideas and concepts of project management, detailed planning and research on the work involving human resources, schedule, quality, material, risk, communication, safety, etc. Considering the importance of schedules, it is planned to use milestones, Gantt charts, etc. to focus on this issue. On the one hand, the use of schedules and theories has solved the practical problems of project construction, and on the other hand, it is hoped that the practice of the project can help the schedule. Relevant theories and enriched. 2 The main part of this paper studies the necessity and feasibility of the petroleum cracking pipe project, fully elaborates the reason for its initiation, and describes the project schedule and details in detail, and proposes an optimization plan for the schedule to make the The formulation and implementation of the project plan has its own characteristics in terms of effectiveness, enforceability, etc., and the project implementation process has been verified, which has beneficial experience for future relocation of related projects. Seamless steel pipes of this kind of steel are widely used in hydraulic props, high-pressure gas cylinders, high-pressure boilers, fertilizer equipment, petroleum cracking, automobile semi-axle sleeves, diesel engines, hydraulic pipe fittings and other pipes. Quzhou Nanxun Fertilizer Pipe Punching and Drawing Process The development of fertilizer pipes for important components of power station boilers is now in this era. At the same time, it is widely used in thermal power units and petrochemical equipment. With the rapid growth of domestic power demand, the demand for such large diameter steel pipes has increased significantly. 12Cr1MoVG fertilizer tube is a low-alloy heat-resistant steel with a large amount of power station boilers.This steel is mainly solid-solution strengthened with CrMo alloy elements, and a certain amount of V elements and C elements are heated to form carbides such as VC for dispersion strengthening.Its structure is stable and Has higher lasting strength. Mainly used for boiler water wall, superheater, reheater, header and steam pipes. This type of steel is special for heat treatment process, especially after thick-walled pipe heat treatment, low impact toughness value, unqualified hardness, uneven impact value and even unqualified phenomenon are often found. It is one of the main good companies for high-pressure large-diameter fertilizer pipes. Manufacturing and heat treatment advantages, optimizing the rolling process and heat treatment process for 12Cr1MoVG steel, and completing the good practice and evaluation test work of large diameter extra thick wall and large diameter thin wall high pressure chemical fertilizer pipes. Good process route design The domestic large-diameter thick-wall seamless steel pipe is mainly relying on hydraulic back punching and hydraulic jacking and drawing process.The hydraulic back punching and hydraulic jacking and drawing process are characterized by compressive stress. Due to its advantages such as low investment, simple equipment, short construction period, good product quality, geometric accuracy, and high yield, the special-purpose fertilizing pipe has good thermal expansion technology for large-diameter seamless pipes. Gradually adopted by seamless management companies. The diameter expansion deformation is completely dependent on the completion of the expanded mandrel placed in the inner hole of the seamless steel pipe. In order to obtain a large-caliber seamless pipe with good internal surface quality and reduce the wear of the mandrel, it is necessary to ensure that the inner surface of the mandrel and the capillary tube is good. And, therefore, the scale and other impurities attached to the inner hole of the capillary tube must be removed before thermal expansion, so as to avoid the scale and other impurities attached to the inner surface during thermal expansion, which will cause scratches on the core rod and affect thermal expansion. Tube quality and mandrel life. At present, the iron oxide scale and other impurities attached to the inner surface of the capillary tube are generally manually removed by manual cleaning methods from the special cleaning tools at both ends of the capillary tube. The cleaning effect is poor, the efficiency is low, and the operation is Labor-intensive and time-consuming. High quality oil well pipes are called special pipes for oil drilling and production, and steel pipes for drilling and oil production according to the habits of users. They are also called oil well pipes in foreign countries. The goodness of petroleum cracking catalysts is mainly based on sieve products, which are synthesized with kaolin, gibbsite, ammonia salts, etc., and the catalyst is finally produced after gelling, drying, and roasting (200 The quality of wastewater produced in the good process is more complicated. Contains a large amount of ammonia nitrogen, suspended matter, Cl- and metal ions, refractory organic matter (volatile phenol), etc. The traditional aerobic biochemical treatment process has problems such as low volume load, high energy consumption, large alkalinity consumption, high operating cost, etc. The emergence of denitrification technology has brought dawn to solve the traditional denitrification problem. Anshan Iron & Steel has good oil pipes for many years, but in the past, it has been good according to the standards issued by the ministry. At the same time, due to outdated equipment and backward technology, the number of oil pipes produced is good. Fewer, poor quality, not many varieties, far from meeting the requirements of users. In order to meet the needs of the rapid development of the petroleum industry, the petroleum cracking pipe plant began to test petroleum pipes according to the American Petroleum Institute standard API standard in the first quarter of 1981. Slim pipes Therefore, the construction is difficult. In order to meet the design requirements to ensure the quality and progress of the construction. Requires quartz sand blasting and derusting to meet Sa5 standard requirements before coating the epoxy resin on the pipe. The inner diameter of the pipe is 356mm and the length is 12m. The diesel engine is used to drive the air compressor to supply air. Requirements. Self-designed and made a special sand blasting device. Analysis of the composition and advantages of petroleum pipes and tubing. The full name of PE is Polyethylene. It is a simple high-organic compound. It is widely used in the world today. The difference in density is divided into high density polyethylene, medium density polyethylene and low density polyethylene. Low density polyethylene is softer and is used for high pressure polymerization; high density polyethylene has the characteristics of rigidity, hardness and mechanical strength, and is often used for low pressure polymerization. High-density polyethylene can be used as containers, pipes, and high-frequency electrical insulation materials for radar and television. Petroleum pipes are short for polyethylene pipes. Compared with traditional metal pipes and other plastic pipes, they have low density, High strength to mass ratio, low brittleness temperature, good toughness, good corrosion resistance and insulation, easy to color, easy to install and install, etc., widely used Government and construction water supply and drainage, gas, heating and heating, wire and cable threading, agricultural water-saving irrigation and industrial sewage, mining and mineral transportation, etc. Compared with steel pipes, the cost can be reduced by about 12%, and the working life is long, up to 50a. It is 20a, and the maintenance cost is low. In developed countries and regions abroad, oil pipes have occupied more than 90% of intercity buried gas pipelines, and water supply pipes have a market share of 60%. Established a very mature standard construction specification. After the country gradually banned galvanized pipes, petroleum pipes have a competitive advantage in the fields of building water supply, gas and industrial water supply and drainage. The use of hot-dip aluminum plating can effectively improve its resistance. Heat resistance and corrosion resistance. The process conditions of hot-dip aluminizing are studied. The corrosive perforation of the common materials of fertilizer pipes J55 and N80 steel seriously affects the normality of the oil field. The best technology for hot-dip aluminizing of fertilizer pipes is determined as the molten flux Bath method. Based on this process, the metallographic microscope was used to analyze the coating thickness and microstructure of J55 and N80 steel. At the same time, the corrosion resistance of J55 and N80 steel before and after hot-dip aluminizing in 3% NaCl aqueous solution was studied by the full dipping method The mechanical properties of J55 and N80 steels before and after aluminizing were compared with CMP series tensile strength testing machines. Property of Rizhao Petroleum Pipe and Pipe Performance Analysis of the composition and advantages of petroleum pipes PE is called Polyethylene, a simple high-organic compound with a simple structure. It is widely used in today's world. Medium density polyethylene and low density polyethylene. Low-density polyethylene is softer and is used for high-pressure polymerization; high-density polyethylene has the characteristics of high rigidity, hardness, and mechanical strength, and is often used for low-pressure polymerization. High-density polyethylene can be used as containers, pipes, and high-frequency electrical insulation materials for radar and television. Petroleum pipe is an abbreviation of polyethylene pipe. Compared with traditional metal pipes and other plastic pipes, it has low density, high strength and mass ratio, low brittleness temperature, good toughness, good corrosion resistance, good insulation, easy coloring, and easy construction. And installation features, widely used in municipal and building water supply and drainage, gas, heating and heating, wire and cable threading, agricultural water-saving irrigation and industrial sewage, mining and mineral transportation and other fields. Compared with the steel pipe, the cost can be reduced by about 12%, the working life is long, up to 50a, the steel pipe is 20a, and the maintenance cost is low. In developed countries and regions abroad, oil pipes have accounted for more than 90% of intercity buried gas pipelines, and water supply pipes have a market share of 60%, and foreign countries have established very mature standard construction in petroleum pipes specification. In China, after galvanized pipes were gradually banned, petroleum pipes had a competitive advantage in areas such as building water supply, gas and industrial water supply and drainage. The use of hot-dip aluminum plating can effectively improve its heat resistance and corrosion resistance. The process conditions of hot-dip aluminizing were studied. The corrosive perforation of J55 and N80 steel, which are commonly used in fertilizer pipes, seriously affected the normality of the oil field. It was determined that the best process for hot dip aluminizing of fertilizer tubes is the bath method in the molten flux method. Based on this process, the metallographic microscope was used to analyze the coating thickness and microstructure of J55 and N80 steel. At the same time, the corrosion resistance of J55 and N80 steel before and after hot-dip aluminizing in 3% NaCl aqueous solution was studied by the full immersion method. The mechanical properties of J55 and N80 steels before and after aluminizing were compared with CMP series tensile strength testing machines. 滁州 南 谯 20 # petroleum cracked pipe specification table industry breakthrough pipe wall thickness allowable deviation (mm) reform to strengthen the combined effect of fertilizer special pipe P stiffened flower fertilizer pipe concrete axial pressure column mechanical performance test To improve the mechanical properties of the concrete-filled steel tube interface, strengthen the steel tube Concrete combination effect. That is, P stiffened concrete-filled steel tube composite columns. In this paper, under the funding of a natural science project—P stiffened concrete-filled steel tubular arches—supported by 51178051, the concept of adding P inside petroleum cracked pipe concrete was proposed. Performance and mechanism of axial compression of P-stiffened square concrete filled steel tubular composite columns Researched and applied it to petroleum cracked concrete pipe arch bridge, studied its mechanical performance advantages, and provided the basis for its application in bridge engineering. The main research contents and research results are as follows: 2. Axial compression tests were performed on 27 short columns with stiffened square concrete filled steel tube and P stiffened square steel tube. The model, load displacement curve and load strain curve of the component were studied and analyzed. The research results show that: P stiffened square steel tube The model of concrete axial compression short column is similar to the model of concrete filled steel tube axial compression short column with stiffeners, but it is obviously different from the model of square steel tube concrete axial compression short column. Effectively transfer the load to concrete and strengthen the joint effect of steel and concrete; P stiffened square steel tube coagulates the core The restraint effect is stronger; the stiffening ribs or the addition of P inside the square steel tube can effectively improve the bearing capacity and axial compression stiffness of the square steel tube concrete. 2 The finite element software ANSYS is used to simulate the entire process of the axial compression short column The revised stress-strain relationship of the core concrete is proposed, and the finite element calculation results are in good agreement with the experimental results in this paper. Economic management
Quzhou Nanxun 20 # Petroleum Cracking Pipe Specification Sheet The industry breakthrough is widely used in structural parts and mechanical parts such as oil drill pipes, automobile transmission shafts, bicycle frames, construction steel scaffolding and so on. where is it? It is made from the complete round pipe blank of petroleum cracked pipe after retreatment, cold drawing process of petroleum pipe forming and heat treatment process of finished product. The weight percentage of each chemical element in the material is c0.15-0.18%, mn4-6%, si0.2-0.5%, and the trace elements are v0.02-0.06%, nb0.015-0.06ti0.02-0.06 %, Al0.02-0.05%. The excess is iron and inevitable impurities. The specific processing steps are subsequent processing. Temperature: 850880 ℃, holding time: 30 minutes, air cooling; cold drawing; heat treatment of finished products: quenching, water spray cooling and quenching and tempering heat treatment process, quenching temperature: 900-930 ℃, holding time: minutes, rapid spray cooling to 300 Below ℃, turn to air cooling, tempering temperature 550 ℃, how about Luzhou Nanxun 20 # petroleum cracking pipe, holding time is 100 minutes. Abstract This paper introduces a new manufacturing method of seamless conveying tower pipe for low temperature petroleum derrick. After cold working deformation, this metal material can usually improve tensile performance, impact toughness, increase hardness and reduce plasticity. Made of rolled steel strip. At room temperature, the tensile strength and yield strength of the pipe body material are 5080 mpa lower than that of the steel strip material at the same furnace number and location. According to hrb2 metallographic analysis and metal deformation mechanism analysis in the cold deformation state, the impact toughness is reduced by 6070j, the plasticity is increased by 10%, and the hardness is reduced. The micro level of the strip is generally above 3, and the deformation (about 1% -3%) is generally lower than the critical deformation. After forming, the metallographic band ferrite becomes wider, the pearlite band is slightly discontinuous, and the forming stress acts on it. The invention relates to a cracked oil pipe used in a petroleum derrick for a low temperature resistant power transmission tower. Due to the heavy oil cracking tube being put into use, the service life of the bicycle has been greatly extended, and it has been widely used in many mechanical equipment such as bicycle frames. It can also be seen in some heavy equipment. Therefore, it is very convenient for people's good life and life to put it on the market in Luzhou Nanxun 20 # petroleum cracking pipe standard. Different forms can appear in front of people. The garden fence of the stainless steel oil separator reflects the color of the flowers in the sun, giving people a visual enjoyment. Cold rolled oil cracking pipe adopts stainless steel oil cracking pipe with good surface finish. Before it is put into use, its dimensions are strictly measured. Therefore, it can be seen from this aspect that the size of the cold rolled oil cracking pipe is more accurate than that of the hot rolled oil cracking pipe. Nothing has happened in these years, and now is a good time to choose. The oil pipe has high hardness and has a place in the mechanical field. At the same time, the bending, elongation and extension of this kind of pipe is also a good cracked pipe made by different technologies. Crude oil cracking pipes have requirements before they leave the factory, and mechanical properties need to be tested to complete. In other words, the technical advantages of petroleum cracking pipes are obvious. In real life, we can often see the figure of petroleum cracking pipes. Assets, in order to study the installation technology of key equipment for modern large-scale oil pipeline good line, and successfully applied in Anhui Tianda seamless steel pipe technology transformation project, the mainframe of the perforator, the mainframe of the sizing machine and the main The technical problems of installing the reducer equipment in place ensure the safety and quality of the construction, shorten the construction cycle, reduce costs, and improve labor efficiency. 2 Main technical features (features) Punching machine is difficult to lift. There are two pieces of punching machine frame. , The weight is 76 tons and 72 tons, the exterior size: 4800 * 523 * 5263mm. There are 30t and 50t cranes in the factory building. After the + 6m elevated platform is formed, the mainframe of the perforator cannot be lifted by a large crane. At the same time, the two-piece rack of the punching machine has an irregular structure and there are no lifting points on the rack. After lifting, the level of the rack should be adjusted with four reverse chains. The two-piece racks are located in two parallel to the rolling line. On the rail base, two racks are connected by 8 M160 hydraulic bolts, and these 8 bolts cannot be docked after the racks are docked. They need to be threaded into the rack in advance, and then a parallel rack is used, but frame There are 8 M100 common "T-bolts on the seat. Two pieces of rack cannot be docked on the rack rail seat. What is the material of Luzhou Nanxun 20 # petroleum cracking pipe? It is necessary to adopt temporary measures to suspend the two pieces of rack and dock them. Then the overall decline. Hardness index Brinell hardness of petroleum cracked pipes  In petroleum cracked pipe standards, Brinell hardness is widely used, often the hardness of the material is expressed by the indentation diameter, which is intuitive and convenient. But for harder It is not suitable for petroleum cracked pipe of thin or thin steel. Process inspection> 30 ～ 50 ± 0.3≤30 ± 10%> 50 ～ 219 hot rolled pipe> 219> 20 ± 10% Mechanical properties Standard grade tensile strength (MPa ) The hot-deformed steel sample with a sub-band shape was etched with a reagent containing CuCl2 and observed under a microscope, and then showed a sub-band shape.