45# thick wall coiled pipeThe variety is complete

announcer:hp709HP180518493 release time:2021-12-17 09:47:03

Material used for steel plate coil: it is required to be explained by the user.

The effect of antirust oil on thick wall coiled pipe is antirust effect, which can make the thick wall coiled pipe as smooth as new for a long time and reduce the external corrosion to it. It can also increase its sealing performance and ensure that there will be no problems when transporting fluid. In addition, it has moisture-proof performance, uses antirust oil to isolate the direct air of thick wall welded pipe, so it has little chance of being changed by the external situation, which increases its stable performance and safer use.

.The wall coil pipe is made of steel plate or steel strip by 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, galvanized welded pipe, oxygen blowing 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,16Mn welded pipe, large-diameter thin-walled 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. Cut a blank with a length of about meters. However, acid shall be used for annealing, and attention shall be paid to whether there are many bubbles on the surface. Assuming that there are many bubbles, it shows that the quality of steel pipe can not meet the corresponding standard. In appearance, the cold-rolled thick wall coil is shorter than the hot-rolled thick wall coil, and its wall thickness is generally smaller than that of the hot-rolled thick wall coil, but its surface looks brighter than that of the thick wall thick wall coil. There is not too much roughness on the surface and there are not too many burrs on the diameter. The delivery is generally hot-rolled and delivered through heat treatment. After quality inspection the hot-rolled thick wall coil shall be subject to severe technical selection by the staff. After quality inspection, it shall be subject to perforation tests. If the perforation diameter is too large, it shall be straightened and corrected. After straightening, the equipment shall be labeled and placed in the warehouse after standard arrangement. The quality of steel coil pipe is greatly affected by the size of weld, mainly including welding process parameters, shape and position parameters of welding wire, flux flow, flux process performance and bonding factors.

In short, hot rolled steel pipe is a special thick wall steel pipe rolled with steel plate under heating conditions. Here, hot coiling refers to heating to coil the steel plate. Its meaning shall be determined with cold rolled steel pipe.

.Cold rolled thick wall continuous pipe is similar to cold rolled thick wall continuous pipe, 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.

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.

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, 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.


45# thick wall coiled pipeThe variety is complete



During pipe rolling, the surface damage of steel plate shall be prevented. The parts with serious scratches must be polished for transition, and the wall thickness of the polished parts shall not be less than the design wall thickness.

A steel pipe with joints on the surface, which is welded after square and other shapes. According to different welding, it can be divided into arc welded pipe, high-frequency or low-frequency resistance welded pipe, gas welded pipe, furnace welded pipe, Bondi pipe, etc. According to the weld shape, it can be divided into straight welded pipe and spiral welded pipe. Spiral welded steel pipe refers to the circular electric welded steel pipe formed by bending steel strip or steel plate which is used in oil drilling and production and machinery industry. Furnace welded pipe can be used in petrochemical industry such as water gas pipe. Professional hot rolled steel pipe, large diameter thick wall rolling pipe, thick wall straight seam rolling pipe, steel casing, rolling pipe factory, quality assurance, professional, timely supply and high cost performance. It has become the first choice brand for many wire products. Welcome to buy! It can be said that it is applied to all industries. Spiral steel pipe can be used for transportation. In fact, the generation of spiral steel pipe in our century has been widely used and applied because of its low cost. Spiral steel pipe has experienced a very brilliant period. On the basis of the original, we are trying to study this new type of spiral steel pipe with higher quality.

The quality of steel rolling pipe is greatly affected by the size of weld, mainly including welding process parameters, shape and position parameters of welding wire, flux flow, flux process performance, forming joint and other comprehensive factors.

original.1 carbon structural steel: q215-a,Q215-B,Q215-B· F,Q235-A,Q235-A· F,Q235-B, the coiled pipe forms pit defects.

The rolling pipe production technology requires that the rolling pipe weld is a double-sided weld When repeatedly pressed, two longitudinal welds are allowed, and the weld spacing exceeds 300 mm. The welding appearance and quality standard shall not be lower than the level standard in the welding specification.

The wall thickness of general coiled pipe is 20mm and the outer diameter is 450-3000mm. It is made of steel plate by direct rolling, welding and forming. The production process of general thick walled coiled pipe can be divided into cold drawing and hot rolling. The production process of cold rolled seamless steel pipe is generally more complex than hot rolling. Roll sizing test shall be carried out for pipe blank first. If there is no response crack on the surface, the round pipe shall be cut by cutting machine, Cut into blanks about meters in length. However, when entering the annealing process, acid shall be used for annealing, and attention shall be paid to whether a large number of bubbles are generated on the surface. If a large number of bubbles are generated, it indicates that the quality of steel pipe can not meet the response standard. In appearance, the cold-rolled seamless steel pipe is shorter than the hot-rolled seamless steel pipe, and its wall thickness is generally smaller than that of the hot-rolled seamless steel pipe, but the surface is brighter than that of the thick wall seamless steel pipe. There is not too much roughness on the surface, and there are not too many burrs in the diameter. The thick wall coiled pipe is a powerful manufacturer, quotation, honest operation, genuine and of the same quality. The thick wall coiled pipe is available from stock, with complete specifications,45# large diameter thick wall coiled pipe,Q345B reel,. Docking and strengthening. Coil pipe processing time is short and delivery is fast Low cost. The rolling pipe is mainly used for pipes, billboards, columns, etc.


45# thick wall coiled pipeThe variety is complete



Circumferential deviation of coiled pipe pipe groove processing and joint pair: when the pipe wall thickness is less than 6mm, it is type V weld; For pipes with diameter greater than 600mm and wall thickness greater than 6mm it is type I weld; when the pipe wall thickness is 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.

Respect for customers.The main materials are q23q3420, 435cimo and 42cimo, 16 manganese and 16 manganese capacity. Generally, cold rolled sheet can be used for pipe rolling, and the product standards are GB / t50205-200, GB / t3092-2001, etc. Continuous pipe is widely used in petroleum, chemical industry, pile driving, urban water supply heat supply, gas supply and other projects.

Material used for steel rolling pipe: it is required to be explained by the user.

Have we learned about the packaging process of the steel used? Today, let's discuss the packaging process of lower thick wall coil.

.The butt joint of coiled pipe (with the same wall thickness) shall not exceed 10% of the wall thickness and not more than 2mm.

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, idler pipe, deep well pump pipe, automobile pipe, transformer pipe, electric welding thin-wall pipe, coil, Q235B coil, Q345B 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

The rolling pipe production technology requires that the rolling pipe weld is a double-sided weld, two longitudinal welds are allowed, and the weld spacing exceeds 300 mm. The welding appearance and quality standard shall not be lower than the level standard in the welding specification.