Electric fusion connection: when the pipe fittings leave the factory, the resistance wire is buried in the pipe fittings to make electric fusion pipe fittings. At the construction site, only the plug of the special welding instrument and the socket of the pipe fittings need to be connected. The inner body of the pipe fittings melts the outer plastic of the pipe fittings and the inner plastic of the pipe fittings to form a reliable connection, and combines the timing methods such as special digital timekeeper and installation indicator hole.
Before starting up, it is necessary to check whether the hot coil machine operates normally and fill the oil hole with oil.
.The utility model is characterized in that a T-shaped welded steel pipe needs to be hung when measuring the length. In addition, the photoelectric switch detection also has a certain error, which may require a comprehensive measurement of the circumferential weld butt steel pipe.
Service specification of coiled steel pipe: there are spiral welded pipe and seamless pipe, and the pressure resistance of gas and water is different.
.Weld size has a great influence on the quality of rolled steel pipe. Weld size mainly includes welding process parameters, welding wire shape and position parameters, flux flow, flux process performance and weld forming.
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 is a kind of familiar steel. It is widely used in construction and pipeline industry because of its durable performance and excellent quality. Have we known about the packaging process of the frequently used steel? With the development of domestic economic situation and the acceleration of welding and casting trend, the advantages of NC cutting are gradually recognized. NC cutting not only greatly improves the rate of plate and product quality but also improves the working environment and labor efficiency. At present, the NC cutting machines used in the thick wall coil processing industry are mainly flame and ordinary plasma cutting machines, but pure flame cutting can not meet the needs of modern production. At present, most NC cutting machines are NC plasma cutting machines. This type of cutting machine can meet the needs of thick wall coiled pipe plate processing and thick wall coiled pipe parts processing, so the demand will be greater and greater, but there is still a very obvious gap with foreign countries, which is mainly reflected in: 90% of the developed thick wall coiled pipe processing industry is digital control cutting machine, and only 10% is manual cutting; The CNC cutting machine only accounts for part of the total blanking. 10%, of which the proportion of NC plasma cutting is small. Professional hot rolled steel pipe, large diameter thick wall rolling pipe, thick wall straight seam rolling pipe, steel casing, rolling pipe factory to ensure quality, service and quality. Your satisfaction is our pursuit! Welcome to inquire. In industrial production, thick wall coil thermal cutting generally includes gas cutting, plasma cutting, laser cutting, etc. Among them plasma cutting has a wider cutting range than gas cutting More efficient. Fine plasma cutting technology is close to laser cutting in material cutting surface quality, but the cost is much lower than laser cutting. Therefore, since the successful development of the United States in the mid-1950s, plasma cutting has developed rapidly. With the rapid development of computer and digital technology, NC cutting is also developing, which improves the machining accuracy. Save materials
The wall thickness of hot coil thick wall continuous pipe is generally greater than 20mm, and the outer diameter range is 450-3000mm. Hot rolled thick wall continuous pipe is rolled, welded, formed, reinforced, flaw detected and delivered under the condition of steel plate heating. Sometimes the wall thickness is very special and needs secondary heating. It is characterized by small outer diameter tolerance and uniform wall thickness. The main reason is that the hot rolled thick wall continuous pipe will not damage the performance of raw materials. The disadvantages of hot rolled thick wall continuous pipe are long processing time and high cost. Hot rolled thick wall pipe is widely used: oil cylinder, hydraulic, bridge, roll, etc. Compared with seamless steel pipe, thick wall continuous pipe has the disadvantages of low cost, breaking the fixed specification of seamless steel pipe and so on. Thick wall coil is welded by bending steel plate or steel strip. According to the weld form it is divided into straight welded pipe and spiral welded pipe. It can be divided into ordinary welded pipe, galvanized welded pipe, oxygen blowing welded pipe, wire sleeve, idler pipe, automobile pipe, transformer pipe, welded thin-wall pipe, welded special-shaped pipe and spiral welded pipe. It is a special product manufacturing enterprise integrating research, development and service. It has long been specialized in hot-rolled steel pipe, large-diameter thick wall rolling pipe, thick wall straight seam rolling pipe, steel casing and rolling pipe factory. Continuous pipe is committed to producing all kinds of circumferential seam and longitudinal circumferential continuous pipe and penstock, and is reformed on the basis of the same specification and model of traditional rolling equipment. The function of parameters of coil welded steel pipe equipment is improved by 30%, which fills the gap that can not be produced by traditional rolling equipment. It can produce steel pipes with diameter of more than 400 and wall thickness of 8-100mm. The main materials are q23 q34 20, 16Mn, GB / t3092-2001, etc. the products are widely used in petroleum chemical industry, natural gas transmission, pile driving, urban water supply, heating, gas supply and other projects.
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, Q345B rolling pipe, large-diameter thin-wall rolling pipe, large-diameter thick wall rolling pipe, stainless steel rolling pipe, L360 rolling pipe and 16Mn rolling pipe are advanced in technology, strict in testing, more affordable and more preferential. Welcome to consult
The inspection requirements for thick wall coiled pipe treatment are that the thick wall coiled pipe is made of steel plate. The thick wall coiled pipe can be divided into coiled pipe and hot rolled thick wall coiled pipe. Generally, the production process of thick wall 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 the pipe blank first. If the surface does not respond to the crack, the round pipe shall be cut by a cutter and cut into a blank with a length of about meters. 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,. The wall thickness of coiled pipe is 20mm and the outer diameter is 450-3000mm. It is rolled, welded, formed, butted, removed and reinforced directly from the steel plate. Coil processing time is short and delivery is fast.
Direct material.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.
Continuous pipe products are widely used in petroleum, chemical industry, natural gas transmission, pile driving, urban water supply, heat supply, gas supply and other projects. The detection of thick wall continuous pipe is mainly ultrasonic flaw detection. The longitudinal wall thickness of two cylinders should not exceed two. The butt weld of thick wall continuous pipe shall be flush with the. When the nominal diameter is larger than, back sealing welding shall be carried out in the pipe. In the process of pipe rolling, the rolling quality of pipe, Q235B rolling, Q345B rolling, large diameter thin wall rolling, large diameter thick wall rolling, stainless steel rolling, L360 rolling and 16Mn rolling were analyzed. The offer is in progress. Welcome new and old customers to consult. Prevent surface damage of steel plate.
Let me introduce the standard coil produced by steel plate. In the process of rolling, the surface of the circuit board should 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.
Today's equipment is double-sided submerged arc welding, because it goes without saying that double-sided welding is necessary here.
Where can I find it?.The butt joint of coiled pipe (with the same wall thickness) shall not exceed 10% of the wall thickness and not more than 2mm.
Large diameter thick wall coiled pipe is usually higher than dn450. Large diameter thick wall coiled pipe sometimes has two welds. The reason why this happens is mainly because of raw material problems and equipment processing. Steel mills usually do not produce steel plates with the required width of large-diameter welded pipes required by customers. Therefore, two plates need to be welded, so welds will occur. Large diameter thick wall coiled pipe can mainly carry out flaw detection, and the requirements related to delivery are wider than other products. Ultrasonic flaw detector is mainly used to detect large-diameter thick wall coiled pipe. The same circular joint of coiled pipe shall not be greater than 2.
With the development of domestic economic situation and the acceleration of welding and casting trend, the advantages of NC cutting are gradually recognized. It has long provided various brand products such as hot-rolled steel pipe, thick wall straight seam rolling pipe, but also improves the working environment and labor efficiency. At present, the NC cutting machines used in the thick wall coil processing industry are mainly flame and ordinary plasma cutting machines, most NC cutting machines are NC plasma cutting machines. This type of cutting machine can meet the needs of thick wall coiled pipe plate processing and thick wall coiled pipe parts processing so the demand will be greater and greater, but there is still a very obvious gap with foreign countries, which is mainly reflected in: 90% of the developed thick wall coiled pipe processing industry is digital control cutting machine, and only 10% is manual cutting; The CNC cutting machine only accounts for part of the total blanking. 10% of which the proportion of NC plasma cutting is small. In industrial production, the thermal cutting of thick wall coiled pipe generally includes gas cutting, plasma cutting, laser cutting and so on. Among them, plasma cutting has a wider cutting range than gas cutting More efficient. Fine plasma cutting technology is close to laser cutting in material cutting surface quality, but the cost is much lower than laser cutting. Therefore, since the successful development of the United States in the mid-1950s, plasma cutting has developed rapidly. With the rapid development of computer and digital technology, NC cutting is also developing, which improves the machining accuracy. It shows great advantages in saving materials and 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.
.The misalignment of butt weld of coiled pipe shall not exceed 20% of wall thickness and shall not exceed 2mm. Butt joint of two pipes with small adjacent deviation value.
Sealing and sealing shall be carried out in the pipeline. The wall thickness of general coiled pipe is 20mm and the outer diameter is 450-3000mm. The production process of general thick walled coiled pipe can be divided into cold drawing and hot rolling directly from the production process of steel plate rolling and general thick walled coiled pipe. The production process of cold-rolled seamless steel pipe is generally more complex than hot rolling. Roll sizing test shall be carried out for the pipe blank first. If there is no response crack on the surface, 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. Welding, forming butt joint and pipe rolling, with short processing time, fast delivery and low cost, are mainly used for hot-rolled thick wall coils such as pipes, billboard and columns. The thickness of hot-rolled thick wall coils is generally greater than 20mm and the outer diameter is 450-3000mm. The hot-rolled thick wall coils are rolled under the heating of steel plates Welding, forming deburring, defect detection and delivery. Sometimes the wall thickness is relatively thick and secondary heating is required. The feature is that the outer diameter tolerance is small Uniform wall thickness. It is important that the hot rolled thick wall coil will not damage the properties of raw materials. The disadvantages of hot roll thick wall rolling pipe are long processing time and. Professional hot-rolled steel pipe, large-diameter thick wall coil, thick wall straight seam coil, steel casing, coil factory inspection is strict, quality assurance. Preferential activities are in progress, welcome to consult. Hot-rolled thick wall coil is widely used: cylinder block, hydraulic pressure, bridge, roller table, etc.
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. Generally, the production process of thick wall 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 the pipe blank first. If the surface does not respond to the crack, the round pipe shall be cut by a cutter and cut into a blank with a length of about meters. However, when entering the annealing process, acid shall be used for annealing, 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,. 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. The factory has perfect steel plate coil, thick wall coil, T-shaped welding coil, flaw detection welding coil, 16Mn coil, special-shaped coil and other production lines. It is a coil factory that can produce large coils of various specifications and wall thicknesses. Our thick wall coil and large coil products are sold to large enterprises all over the country and are deeply trusted and praised by customers. Steel plate coil, thick wall coil, coil, t-welded coil, flaw detection welded coil, 16Mn coil and Q345B coil shall be carried out in strict accordance with ISO9001:2000 international quality management standards.