Weight per meter of steel plate coil = (outer diameter wall thickness) * wall thickness * 0.0246615 steel plate coil is made of steel plate. Thick wall t-welded coil can be divided into coil and hot rolled thick wall coil.
The diameter of thick wall coiled pipe is usually higher than dn450. Thick wall coiled pipe is sometimes two welds. The reason why this happens is mainly due to the problems of raw materials and equipment processing. The steel plate with the required width of welded pipe required by the customer is usually not produced by the steel plant, so two plates need to be welded, so the weld will occur.
.Steel plate rolling round production process: the production process of steel plate rolling round generally includes hot rolling, hot coil, casting and other production methods! Steel plate rolling is often seen in the production process of double-sided submerged arc welding. The products go through multiple processes such as welding, external welding, straightening and flat head. Rolling pipe, Q235B rolling pipe, Q345B rolling pipe, large-diameter thin-wall rolling pipe, large-diameter thick wall rolling pipe, stainless steel rolling pipe, strict in testing, more affordable and more preferential. Welcome to consult
It shows great advantages in improving labor productivity. This leads to the development of plasma cutting technology from manual or semi-automatic to NC, which has become one of the main directions of NC cutting technology. NC plasma cutting technology is a set of high-tech technologies such as NC technology, plasma cutting technology and inverter power supply technology. Its development is based on the common progress of computer, plasma arc characteristic research, power electronics and other disciplines. The CNC cutting technology began in the 1980s, and the CNC plasma cutting technology was later. However, recently, some domestic universities, research institutes and manufacturers have studied NC plasma cutting technology and gradually developed and produced various specifications of NC plasma cutting equipment, narrowing the gap of foreign advanced technology. Today, let's discuss the packaging process of lower thick wall coil.
.Circumferential deviation of coiled pipe, it is type I weld; when the pipe wall thickness is greater than 6mm, it is type V weld; For pipes with diameter greater than 600mm and wall thickness greater than 6mm, the bottom of the pipe shall be sealed at the bottom of the pipe; In addition to the lap joint, the other type of gas coil pipe is continuous and solid V-groove butt welding. If the weld is found to be defective, the weld must be re welded. Rewelding shall not be more than twice. Long term supply of hot rolled steel pipe, large diameter thick wall rolling pipe, thick wall straight seam rolling pipe, steel casing, rolling pipe factory has complete products and excellent quality, The price is favorable. The longitudinal weld of the winding pipe with the same cylindrical part shall not be greater than the spacing between two longitudinal joints shall not be less than 200mm. The arc length of the winding pipe calibration template shall be 1 / 6 ~ I of the circumference of the pipe / the gap between the template and the pipe. Let me introduce the steel plate production standard winding pipe. During the winding process, the surface of the circuit board shall be protected from damage. Parts with severe scars shall be ground to achieve transition, and the wall thickness of the ground part shall not be less than the design wall thickness.
Circumferential deviation of coiled pipe, pipe groove processing and joint pair: when the pipe wall thickness is less than 6mm, it is type I weld; when the pipe wall thickness is greater than 6mm, it is type V weld; For pipes with diameter greater than 600mm and wall thickness greater than 6mm, the bottom of the pipe shall be sealed at the bottom of the pipe; In addition to the lap joint, the other type of gas coil pipe is continuous and solid V-groove butt welding. If the weld is found to be defective, the weld must be re welded. Rewelding shall not be more than twice. Long term supply of hot rolled steel pipe, large diameter thick wall rolling pipe, thick wall straight seam rolling pipe, steel casing, rolling pipe factory has complete products and excellent quality The price is favorable. The longitudinal weld of the winding pipe with the same cylindrical part shall not be greater than the spacing between two longitudinal joints shall not be less than 200mm. The arc length of the winding pipe calibration template shall be 1 / 6 ~ I of the circumference of the pipe / the gap between the template and the pipe. Let me introduce the steel plate production standard winding pipe. During the winding process, the surface of the circuit board shall be protected from damage. Parts with severe scars shall be ground to achieve transition, and the wall thickness of the ground part shall not be less than the design wall thickness.
Thickness detection thickness detection is very simple, as long as the caliper is OK. Like other pipes.
The process of thick wall straight seam coiled pipe is generally rolled. If the diameter required by the customer is particularly large it is difficult for general machinery and equipment, so it is necessary to use coiled pipe. First, after the steel plate is rolled, then weld the two rolled steel pipes. The weld is also called T-welding. Sometimes the large diameter thick wall straight seam steel needs to roll and weld the two steel plates, Therefore, there may be two welds on a pipe body, also known as double welds. Thick wall straight seam coiled pipe has a wide range of materials. As long as it is a steel plate that can be ordered in a steel plant, it is basically OK. The main problem of the product is the welding quality. The welding quality directly determines the quality of the product, which is the main step in the thick wall rolling pipe. It is suitable for columns for bearing steel structures such as buildings, bridges, dams and offshore platforms, super long-span building structures and electric pole tower and mast structures requiring wind resistance and earthquake resistance.
How big can the diameter of thick wall coiled pipe be? Thick wall coiled pipe sometimes has two welds. Why does this happen? It is mainly due to raw material problems and equipment processing problems. The width of the welded pipe required by the customer is not produced by the steel plant, so this kind of weld occurs. The main problem of thick wall coiled pipe is welding. As long as the flaw detection can be carried out, the delivery can be carried out. The relevant requirements are broader than other products. The detection of thick wall coiled pipe is mainly ultrasonic flaw detector, and the longitudinal weld on the same cylinder section of coiled pipe should not be more than two. The group of butt welds of coiled pipe shall be flush. When the nominal diameter is greater than, back sealing welding shall be carried out in the pipe. During pipe rolling processing, the surface damage of the plate shall be prevented. High cost. Hot rolled thick wall coiled pipe is widely used: oil cylinder, hydraulic pressure, bridge roller, etc& amp; amp; quot; Compared with seamless steel pipe, thick wall coil has the disadvantages of low cost, rapid delivery, breaking the fixed specification of seamless steel pipe, etc. Quality department 3 editing of welding process and welded pipe type thick wall coiled pipe is made of steel plate or steel strip after bending and then welding. According to the weld form it is divided into straight welded pipe and spiral welded pipe. According to the purpose, galvanized welded pipe, oxygen blowing welded pipe, wire sleeve, metric welded pipe, idler pipe, deep well pump pipe, automobile pipe, transformer pipe, electric welding thin-wall pipe, electric welding special-shaped pipe and spiral welded pipe. Objective knowledge packaging strategy thick wall steel plate coil - thick wall steel plate coil price thick wall coil is formed by bending steel plate or steel strip, with the electrical model of 031 inspection 8517611 standard, and then made by high-frequency welding and submerged arc welding. According to the weld form, it is divided into general welded pipe, galvanized welded pipe, oxygen blowing welded pipe, wire sleeve, metric welded pipe, idler pipe, deep well pump pipe, automobile pipe, transformer pipe, electric welded thin-walled pipe, electric welded special-shaped pipe and spiral welded pipe, coil, Q235B coil, Q345B coil, large-diameter thick-walled coil, stainless steel coil, L360 coil and 16Mn coil, Quality. Preferential activities are in progress. Welcome to consult. Large diameter welded pipe, etc. The large-scale thick wall rolling equipment has the advantages of 3000mm outer diameter, 200mm wall thickness and 2mm roundness: compared with seamless steel pipe, thick wall rolling pipe has the disadvantages of low cost, rapid delivery, breaking the fixed specification of seamless steel pipe, etc.
The production process of thick wall welded pipe can be divided into cold rolling, cold rolling and hot rolling. The steel pipes are made of 10, 20, 35 and 45, which are referred to as ordinary steel pipes for short, and 16Mn is between ordinary steel pipes and alloy steel pipes. This material is called low alloy steel pipe, the steel pipe materials are 27SiMn, 12Cr1MoV, 10crmo9, 15CrMo and 35CrMo, it is divided into structural seamless steel pipe; Seamless steel pipe transportation; Seamless steel pipe for boiler; High pressure seamless steel pipe for boiler; High pressure seamless steel pipe for fertilizer equipment; Seamless steel pipe for geological exploration; Jointed steel pipe; Seamless steel pipe for petroleum cracking; Marine seamless steel pipe; Cold drawn cold rolled precision seamless steel pipe; Various alloy pipes.
Design brand.In general, the process of expanding the diameter of coiled pipe products can be divided into three stages. It is the preliminary rounding stage: the sector blocks are opened until all the sector blocks reach the steel pipe. At this time, the radius of each point in the steel pipe is almost the same within the step range, and the steel pipe is preliminarily rounded. The second stage is the nominal inner diameter stage: the sector starts to reduce the movement speed from the front position until it reaches the required position, which is the inner circumference position of the finished pipe with quality requirements.
The longitudinal weld of the same barrel part of the coiled pipe shall not be greater than 2.
Have we learned about the packaging process of the steel used? Today, with wall thickness of 20mm and outer diameter of 450-3000mm. Steel plate is directly rolled, welded, formed, butted and reinforced. Cold rolled thick wall pipe has the characteristics of short processing time, fast delivery and low cost. Cold rolled thick wall pipe is mainly used for: pipe, billboard, column, etc.
middleman.Gas and other projects.
How big can the diameter of thick wall coiled pipe be? Thick wall coiled pipe sometimes has two welds. Why does this happen? It is mainly due to raw material problems and equipment processing problems. The width of the welded pipe required by the customer is not produced by the steel plant, so the two plates must be welded, so this kind of weld occurs. The main problem of thick wall coiled pipe is welding. As long as the flaw detection can be carried out, the delivery can be carried out. The relevant requirements are broader than other products. The detection of thick wall coiled pipe is mainly ultrasonic flaw detector, and the longitudinal weld on the same cylinder section of coiled pipe should not be more than two. The group of butt welds of coiled pipe shall be flush. When the nominal diameter is greater than, back sealing welding shall be carried out in the pipe. During pipe rolling processing, the surface damage of the plate shall be prevented. High cost. Hot rolled thick wall coiled pipe is widely used: oil cylinder, hydraulic pressure, bridge, roller, etc& amp; amp; quot; Compared with seamless steel pipe, thick wall coil has the disadvantages of low cost, rapid delivery, breaking the fixed specification of seamless steel pipe etc. Quality department 3 editing of welding process and welded pipe type thick wall coiled pipe is made of steel plate or steel strip after bending and then welding. According to the weld form, it is divided into straight welded pipe and spiral welded pipe. According to the purpose, it is divided into general welded pipe, galvanized welded pipe, oxygen blowing welded pipe, wire sleeve, metric welded pipe, idler pipe, deep well pump pipe, automobile pipe, transformer pipe, electric welding thin-wall pipe, electric welding special-shaped pipe and spiral welded pipe. Objective knowledge packaging strategy thick wall steel plate coil - thick wall steel plate coil price thick wall coil is formed by bending steel plate or steel strip, with the electrical model of 031 inspection 8517611 standard, and then made by high-frequency welding and submerged arc welding. According to the weld form, it is divided into straight welded pipe and spiral welded pipe. According to the purpose, it is divided into general welded pipe, galvanized welded pipe, oxygen blowing welded pipe, wire sleeve, metric welded pipe, idler pipe, deep well pump pipe, automobile pipe, transformer pipe, electric welded thin-walled pipe, electric welded special-shaped pipe and spiral welded pipe, coil, Q345B coil, large-diameter thin-walled coil, stainless steel coil, L360 coil and 16Mn coil, Quality. Preferential activities are in progress. Welcome to consult. Large diameter welded pipe, etc. The large-scale thick wall rolling equipment has the advantages of 3000mm outer diameter, 200mm wall thickness and 2mm roundness: compared with seamless steel pipe thick wall rolling pipe has the disadvantages of low cost, rapid delivery breaking the fixed specification of seamless steel pipe, etc.
Deviation reel as follows (unit: mm): nominal diameter & amp; amp; lt; 800 800 to 1200 1300 to 1600 1700 to 2400 2600 to 3000 perimeter Deviation & plusmn; 5± 7± 9± 11± 13 ovality is 1% of the outer diameter, 4 6 8 10 and no more than 4 steel plate coils have standards. At present, we carry out construction according to the acceptance of standard GB / t19793-92.
.Thick wall coiled pipe is usually higher than dn450. Thick wall coiled pipe is sometimes two welds. Why does this happen mainly because of raw material problems and equipment processing problems? The steel plate with the required width of welded pipe required by the customer is usually not produced by the steel plant, so the weld will occur. The main problem of thick wall coiled pipe is welding. As long as flaw detection can be carried out, the requirements related to delivery are wider than other products. The detection of thick wall coiled pipe is mainly ultrasonic flaw detector. The longitudinal weld on the same cylindrical part of the coiled pipe shall not be greater than 2. When the coil pipe is butt welded, the corresponding parts shall be flushed to. When the nominal diameter is larger than the inner seal, the bottom seal welding shall be carried out. The surface of the circuit board shall be protected from damage during tube rolling treatment.
Welding voltage because the welding arc is conical, and the welding voltage directly affects the length of the arc. Therefore with the increase of welding voltage, the arc length increases, the moving range of arc spots expands the weld pool widens, and a wider weld formation will be obtained. If welding is carried out in a horizontal position, it will only change the width of the weld without affecting the edge transition of the weld. However, the external welding of spiral welded pipe is carried out on the slope, and the molten weld metal will flow laterally under the action of gravity. It can be seen that the larger the welding voltage and the wider the weld pool, the more serious the trend of lateral flow of weld metal, * eventually leading to the bias flow of weld metal. Coil products are not only rich in types, but also diversified in processing technology and molding. In most cases, after forming, the next process is to expand the diameter of the welded pipe blank to improve the quality of welded pipe shape. In other words the expanding process has become an important process to ensure the quality of finished pipe in the production of large-diameter straight seam coiled pipe.
Thick wall coiled pipe sometimes has two welds. Why does this happen? It is mainly due to raw material problems and equipment processing problems. The width of the welded pipe required by the customer is not produced by the steel plant, so the two plates must be welded, so this kind of weld occurs. The main problem of thick wall coiled pipe is welding. As long as the flaw detection can be carried out, the delivery can be carried out. The relevant requirements are broader than other products. The detection of thick wall coiled pipe is mainly ultrasonic flaw detector and the longitudinal weld on the same cylinder section of coiled pipe should not be more than two. The group of butt welds of coiled pipe shall be flush. When the nominal diameter is greater than, back sealing welding shall be carried out in the pipe. During pipe rolling processing, the surface damage of the plate shall be prevented. High cost. Hot rolled thick wall coiled pipe is widely used: oil cylinder, hydraulic pressure, roller, etc& amp; amp; quot; Compared with seamless steel pipe, thick wall coil has the disadvantages of low cost, rapid delivery, breaking the fixed specification of seamless steel pipe, etc. Quality department 3 editing of welding process and welded pipe type thick wall coiled pipe is made of steel plate or steel strip after bending and then welding. According to the weld form, it is divided into straight welded pipe and spiral welded pipe. According to the purpose, it is divided into general welded pipe, galvanized welded pipe, oxygen blowing welded pipe, wire sleeve, metric welded pipe, idler pipe, deep well pump pipe, automobile pipe, transformer pipe, electric welding thin-wall pipe, electric welding special-shaped pipe and spiral welded pipe. Objective knowledge packaging strategy thick wall steel plate coil - thick wall steel plate coil price thick wall coil is formed by bending steel plate or steel strip, with the electrical model of 031 inspection 8517611 standard, and then made by high-frequency welding and submerged arc welding. According to the weld form, it is divided into straight welded pipe and spiral welded pipe. According to the purpose it is divided into general welded pipe, galvanized welded pipe, oxygen blowing welded pipe, wire sleeve, metric welded pipe, idler pipe, automobile pipe, transformer pipe, electric welding thin-wall pipe, electric welding special-shaped pipe and spiral welded pipe, coil, Q235B coil, large-diameter thin-wall coil, large-diameter thick wall coil, stainless steel coil, L360 coil and 16Mn coil. The inspection is strict and the quality is preferential