20# thick wall
20# large diam, low cost. The rolling pipe is mainly used for pipes, billboards, columns, etc.
In order to make you better understand the installation method of coiled pipe, the following coiled pipe factory will introduce the installation method of coiled pipe: pipe hoop is used, and raw silk belt, white hemp wire, pipe expander, handle and other tools are used to connect coiled pipe and pipe fittings. This method may need repeated debugging due to the great influence of human factors. In addition, when the materials of coiled pipes and pipe fittings are different, due to their different thermal coefficients, leakage may occur when cold and hot water are used alternately.?
.Clean up the workplace and eliminate unsafe factors.
The influence of welding process parameters on welding current mainly includes two aspects: according to the production characteristics of spiral steel pipe, small welding current is usually used for internal welding
.The offer is in progress. Welcome new and old customers to consult. Prevent surface damage of steel plate. Thick wall coil and large diameter coil are mainly made of carbon steel, two or more steel pipes must be connected. Therefore, the process of this welded pipe is flexible, convenient and applicable. The disadvantage is that it can not be produced by mechanized line. The level of automation and mechanization is not high, which requires a lot of manual processing. The main problem of coiled pipes is welding. Thick wall coiled pipes can be delivered as long as they can be inspected by flaw detection. The relevant requirements are broader than other products.
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± The ovality is 1% of the outer diameter, and the quality of no more than 4 steel plate coils is greatly affected by the weld size, mainly including the comprehensive factors such as welding process parameters, welding wire shape and position parameters, flux flow, flux process performance and formed joint.
Application of hot rolled steel pipe: the disadvantage of changing hot rolled steel pipe into seamless steel pipe with fixed specification and model is another major feature of hot rolled steel pipe. In the production process, hot rolled steel pipe has been widely used, especially in large equipment such as oil cylinder production, bridge construction, engineering column, large drum and so on. Save materials and labor for the above enterprises, reduce production costs, improve the market competitiveness of finished products, and promote the development of enterprises to a certain extent. Continuous pipe is committed to producing all kinds of circumferential seam, longitudinal circumferential continuous pipe and penstock, and is reformed on the basis of the same specification and model of traditional pipe rolling equipment. The function of parameters of pipe rolling equipment is improved by 30%, which fills the gap that can not be produced by traditional steel rolling equipment. It can produce steel pipes with diameter of more than 400 and wall thickness of 8-100mm.
Because the coiled steel pipe plays an important role in construction, railway construction and bridge construction, its quality standards are also more important. If you don't understand the quality specifications and standards, it is easy to have an impact. Generally, we can purchase from these aspects.
The purpose of pipe end sizing is to reduce the ellipticity of thick wall coiled pipe and ensure the dimensional accuracy of thick wall coiled pipe after machining. It is mainly used for oil casing. The number of casing after end sizing is less, it is divided into straight seam welded pipe and spiral welded pipe. According to the purpose the weld formation is deteriorated and the edge transition is poor.
How many?.The steel plate or strip is bent and then welded to form a thick wall coil. According to the welding form, it is divided into ordinary welded pipe, galvanized welded pipe, oxygen blowing welded pipe, wire sleeve, metric welded pipe, rolling pipe, deep well pump pipe,Q235B large diameter welded pipe, automobile pipe, transformer pipe, welded thin-wall pipe, welded pipe and spiral welded pipe. Coil pipe is dedicated to the production of, longitudinal ring coil pipe and steel pressure pipe, and is modified according to similar specifications of traditional rolling equipment. The function of increasing the parameters of spiral steel pipe equipment by 30% fills the gap that the original traditional rolling equipment can not produce. It can produce steel pipes with a diameter of 400 or more and a wall thickness of 8-100mm. The material mainly includes Q235, Q345, 20, 16 manganese, 16 manganese capacity, etc. Product executive standards include: GB / t50205-2001, GB / t3092-2001, etc. The products are widely used in petroleum, chemicals, natural gas transportation pile driving, urban water supply, heating, gas supply and other projects. When the coiled pipe is greater than 600mm, two longitudinal welds are allowed, and the spacing shall be greater than 200mm.
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, 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 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, 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 steel plate or strip is bent and then welded to form a thick wall coil. According to the welding form, it is divided into straight seam welded pipe and spiral welded pipe. According to the purpose, it is divided into ordinary welded pipe, galvanized welded pipe,Q460b straight seam welded pipe, oxygen blowing welded pipe, wire sleeve, metric welded pipe, deep well pump pipe, automobile pipe, transformer pipe, welded thin-wall pipe welded pipe and spiral welded pipe. Coil pipe is dedicated to the production of, longitudinal ring coil pipe and steel pressure pipe, and is modified according to similar specifications of traditional rolling equipment. The function of increasing the parameters of spiral steel pipe equipment by 30% fills the gap that the original traditional rolling equipment can not produce. It can produce steel pipes with a diameter of 400 or more and a wall thickness of 8-100mm. The material mainly includes Q235, Q345, 16 manganese, 16 manganese capacity, etc. Product executive standards include: GB / t50205-2001, GB / t3092-2001, etc. The products are widely used in petroleum, chemicals natural gas transportation, pile driving,Q460b large diameter thick wall coiled pipe, urban water supply, heating, gas supply and other projects. When the coiled pipe is greater than 600mm, two longitudinal welds are allowed and the spacing shall be greater than 200mm.
Effective.
retailer.The diameter of large-diameter thick wall coiled pipe is generally above dn450. Long term supply of hot rolled steel pipe, thick wall straight seam rolling pipe, steel casing, rolling pipe factory, old brand, price advantage and quality guarantee! Sometimes there are two welds for large-diameter thick wall coiled pipe. Why does this happen? It is mainly due to the problems of raw materials and equipment processing. The steel plate with the required width of large-diameter 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 large-diameter 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 large-diameter thick wall coiled pipe is mainly ultrasonic flaw detector, and the longitudinal weld on the same barrel section of the 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.
Clean up the workplace and eliminate unsafe factors.
The distance between the longitudinal joints of two pipes shall be greater than 100 mm. The distance between the outer wall of the branch pipe and the weld shall not be less than 50mm.
.When the pipe is rolled, and the distance between the outer wall of the outer branch pipe shall not be less than 50mm.
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.
First, select the specification and put forward the pipe, such as 90 & deg; Elbow which can calculate the curvature to calculate the 90 DEG of the long material; Elbow, and then cut with the length as the fixed length.