Q355b welded steel pipeQuotation

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.

Flame cutting and plasma cutting are commonly used for sheet metal blanking in our factory. The equipment used includes manual cutting, copier, semi-automatic cutting machine and NC cutting machine. Manual blanking is arbitrarily large compared to other cuts Flexible and convenient, no special supporting cutting equipment is required.

.Generally, the production technology of thick wall coil can be divided into cold drawing and hot rolling. The production process of cold rolled thick wall coil is generally more than that of hot rolling. The pipe blank must first be tested by roll sizing. Assuming that the surface does not take care of the crack, the round pipe should be cut by cutting machine. Sometimes there are two welds in thick wall coil. Why does this happen? It is mainly because of the problems of raw materials and materials Equipment processing problem. The steel plate with the required width of the welded pipe required by the customer is generally not produced by the steel plant, so the two plates must be welded, the delivery can be carried out. The relevant requirements are broader than other products. The detection of thick wall coiled pipe is mainly For the ultrasonic flaw detector, the longitudinal weld on the same cylinder section of the coil pipe should not be more than two. The group of the butt weld of the coil pipe should be flush. When the nominal diameter is greater than, the back sealing welding should be carried out in the pipe. During the processing of the coil pipe, the surface damage of the plate should be prevented. The cost is high. The hot-rolled thick wall coil pipe is widely used: oil cylinder, hydraulic pressure, bridge, roller, etc. & amp; quot; quality control 2 thick Compared with seamless steel pipe, thick wall rolling pipe has the disadvantages of low cost, rapid delivery, thick wall rolling pipe breaking the fixed specification of seamless steel pipe, etc. professional hot-rolled steel pipe, large-diameter thick wall rolling pipe, steel casing, which sell well at home and abroad, and the equipment has a long service life! Products are the leader in the electric wire industry. Welcome to call for consultation Inquiry. Quality department 3 editing of welding process and welded pipe type

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, 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 reinforced, bridge, roll, etc. Compared with seamless steel pipe, thick wall continuous pipe has the disadvantages of low cost, fast delivery, 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, galvanized welded pipe, oxygen blowing welded pipe, metric welded pipe, idler pipe, deep well pump 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,Q235B large diameter thick wall welded pipe, 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, 16Mn etc. the product standards are GB / t50205-200, 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.

.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.

In progress, welcome to consult. Large diameter welded pipe etc.

The rolled pipe shall meet the specified arc degree, end face deviation, straightness etc.

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. Thick wall coiled 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. Rolling pipe is committed to producing all kinds of rolling pipes and steel penstocks with circumferential seam and longitudinal ring, and is reformed on the basis of similar specifications and models of traditional rolling equipment. The function of improving the parameters of the rolling and welding steel pipe equipment by 30% fills the gap that the original traditional rolling equipment can not produce. It can produce steel pipes with diameter of more than 400 and wall thickness of 8-100mm. Materials mainly include q23 q34 20#, 16 manganese 16 manganese capacity, etc. Product executive standard: GB / t50205-200, GB / t3092-2001, chemical industry, natural gas transportation, pile driving and urban water supply, heating, gas supply and other projects.

During cold sizing, not only deformation but also a small amount of plastic deformation occurs at the end of thick wall coiled pipe. After sizing, there may be differences in the transition zone between expanding and non expanding. At the same time, there may also be internal and external surface scratches caused by punch and sizing ring,Q460b straight seam welded pipe, resulting in slight stress corrosion. Therefore, the dimensional accuracy of hot-rolled steel pipe should be improved as much as possible to avoid adopting method.

Rolled pipe is divided into straight seam rolled pipe and T-shaped welded pipe. The pipe rolling can meet the market demand for less number and more models of welded pipes. It can be used for pipe pile, column, conveying fluid, pressure vessel, etc. The longitudinal weld of the same barrel section of high pressure and high temperature continuous pipe shall not exceed two courses, and the spacing between the two longitudinal welds shall not be less than 200mm.

Respect for customers.Before starting up, it is necessary to check whether the hot coil machine operates normally and fill the oil hole with oil.

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.

Generally, the wall thickness of the rolled pipe is 20mm and the outer diameter is 450-3000mm. It is rolled, welded, formed, butted and rolled directly from the steel plate. It has the advantages of short processing time, fast delivery and low cost. The rolled pipe is mainly used for hot-rolled thick wall coils such as pipes, billboard and columns. The thickness of the hot-rolled thick wall coil is generally greater than 20mm and the outer diameter is 450-3000mm. The hot-rolled thick wall coil is rolled under the heating of the steel plate 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. Hot rolled thick wall coils are widely used: cylinder,16Mn welded pipe, hydraulic, bridge, roller table, etc.

Gas and other projects.

project.All continuous pipe welds shall be penetration tested.

Among the small Banqiao Xinyuan material trading market of coil pipe manufacturers, this is a relatively mature steel processing trading market. Therefore, there are more manufacturers and more choices, and natural processing will be cheaper.

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.

.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.

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

The arc length of the coil calibration template shall be 1 / 6 ~ I of the circumference of the pipe / the gap between the template and the pipe. What is the manganese content of the straight seam coil? Q345B coil, manganese is a common element in structural steel. Manganese in carbon steel is mainly added to the steel water as deoxidizer in the steelmaking process, usually in the range of 0.3-0.8%. In low alloy steel, manganese is a mixed alloy element, and the manganese content in 16Mn steel and 15MnV steel is 2-6%.