China Round Welded Pipe Mill Without Roller Changing

Round Weled Pipe Mill Without Roller Changing
The round pipe mill without roller changing is our developed newest product. During the diameter changing, the whole complete forming line does not need to change the roller in compared with before precise forming roller changing. Then, the investment for the roller can be saved, which is suitable for the large and medium diameter machine. During the diameter changing, the adjustment of roller is automatic too. It only needs to input the diameter, pipe wall thickness, material and other parameter in the IPC. Then, the entire roller will be automatically adjusted to the right position. Then, the machine can be started directly to have the production. A lot of time can be saved for the roller changing to let the variety diameters pipes production in little quantity to be possible. It improves the machine efficiency and machine starting rate. Besides, automatic adjustment can make the adjustment accurate, decrease the error on the manual adjustment, improve the qualified rate, and the economic efficiency.
This kind of machine can produce top grade pipe in the high standard API pipe and the normal fluid pipe and structure pipe.
Recommended model
1. Φ108~Φ219 mill,Wall thickness range: 2-12mm,Max. material: X80;
2. Φ114~Φ273 mill,Wall thickness range: 2-14mm, Max. material: X80;
3. Φ127~Φ325 mill,Wall thickness range: 3-16mm, Max. material: X80;
4. Φ168~Φ426 mill,Wall thickness range: 3-18mm, Max. material: X80;
5. Φ219~Φ508 mill,Wall thickness range: 4-20mm, Max. material: X80;
6. Φ273~Φ630 mill,Wall thickness range: 4-22mm,Max. material: X80;
7. Φ325~Φ711 mill,Wall thickness range: 5-25mm, Max. material: X80;
Recommended production process:
Coil loading-Uncoiler-Leveling-Steel cutting and welding-Accumulator-Fine leveling-Forming-HF welding-Water cooling-online UT detector-IF annealing-stable steel pulling-Air cooling-Water cooling-Sizing-After saw sizing cutting-Pipe end facing and beveling machine- Hydrotester -Offline UT welding seam and pipe body detector-weighting, measuring, marking-Pipe storage
Technolog:
The Round Pipe mill Without Roller Changing Research
The round pipe mill without roller changing is our developed newest product. During the diameter changing, the whole complete forming line does not need to change the roller in compared with before precise forming roller changing. Then, the investment for the roller can be saved, which is suitable for the large and medium diameter machine. During the diameter changing, the adjustment of roller is automatic too. It only needs to input the diameter, pipe wall thickness, material and other parameter in the IPC. Then, the entire roller will be automatically adjusted to the right position. Then, the machine can be started directly to have the production. A lot of time can be saved for the roller changing to let the variety diameters pipes production in little quantity to be possible. It improves the machine efficiency and machine starting rate. Besides, automatic adjustment can make the adjustment accurate, decrease the error on the manual adjustment, improve the qualified rate, and the economic efficiency.
Round to Square Pipe Mill Without Roller Changing Research
Round to square pipe mill without roll changing is our company new product. During the diameter changing, the whole complete forming line does not need to change the roller in compared with before precise forming roller changing. Sizing section bears the responsibility for the work from round to square. Our mill adopt the newest technology. The sizing section from round to square does not need the roller changing too. This kind of technology not only avoids the large investment on the roller, which is suitable for the large and medium mill. When the diameter changing , the roller adjustment is complete automatic. It only needs to input the diameter, pipe wall thickness, material and other parameter in the IPC. Then, the entire roller will be automatically adjusted to the right position. Then, the machine can be started directly to have the production. A lot of time can be saved for the roller changing to let the variety diameters pipes production in little quantity to be possible. It improves the machine efficiency and machine starting rate. Besides, automatic adjustment can make the adjustment accurate, decrease the error on the manual adjustment, improve the qualified rate, and the economic efficiency.
The square pipe manufacture can be divided to two kinds of technology. One is direct to square cold rollforming technology in general use for the domestic market. Because this kind of technology can use one kind of roller to produce many kinds of square pipe, which saves the lots of roller investment. But the pipes from this kind of technology have the defect, such as unevenness of four angles in square pipe and unfull on round angle. Therefore, this kind of pipe basically is not accepted in the foreign market. It is no problem for sale in domestic market. But export is the problem. Another kind of technology is round to square pipe technology, which is generally used in the foreign market. The round angle of the pipe from this kind technology is full and four angles are even. The outlook of pipe is pretty beautiful. But this kind of mill also has the certain fault. Due to the limited technology, each kind of pipe needs to change one set rollers. The investment of rollers is large and the roller changing takes time and energy. Our company adopts the newest technology, which solves the problem. Our machine only needs to change the welding roller. It is no need to change other rollers. The roller changing adopts computer control. This kind of technology not only avoids the large investment on the roller, but also can produce high quality square pipe. This mill is the best square pipe mill.
Stainless Clad Pipe Welding Mill Research
The stainless clad pipe welding mill can be divided into two kinds of model according to the supply state. The supply state for thin and narrow sheet is the coil, so the mill is continuous type. The supply state for thick and wide sheet is the sheet type, so the mill is intermittent type. In normal condition, the continuous mill can be suitable to the pipe bellowing diameter 325mm and thickness 10mm. The intermittent mill can be suitable to the pipe of diameter 325 to 914mm and thickness 10mm to 25mm.
Continuous mill firstly opens the coil and levels the steel. The steel is milled to special groove online. After forming machine, the steel is formed to round pipe state. Then, the pipe state is welded to the stainless clad pipe after several welding art crafts.
Intermittent production line firstly levels and edge mills the metallurgy combined double metal sheet. Then, each sheet will enter to the forming machine. Using our patent technology-single sheet forming machine and the physical function of the roller, the clad sheet is bended to the pipe state. Then, the pipe is welded with our company patent welding device. It adopts total automatic flexible forming technology in precise control. All the forming section does not need to change the roller, which largely saves the roller investment and decreases the investment on the large diameter mill.
Straight seam submerged-arc pipe welding mill research
Straight seam submerged-arc pipe welding mill is the newest patent product in our company, which adopts the coil as the raw material to manufacture pipe in high thickness and strength. . Compared with ERW, the quality and energy consumption of Straight seam submerged-arc pipe is easier to be controlled, and is welded better and low consumption. The welding seam of Straight seam submerged-arc pipe overcomes the shortages of long welding seam and difficult inspection on spiral welding seam after inbuilt. Compared with UOE and JCOE, the investment cost and production cost are low. The quality of Straight seam submerged-arc pipe welding seam is the best in all welding seam technology. Straight seam submerged-arc pipe is the most reliable. there is no circular interface welding seam on the pipe, which is easy to weld, inspect, maintain and repair. The pipe produced by the mill just covers most pipes which are currently used by oil, gas casing. The mill also has a good market prospect. The technician in our company starts the research after the serious analysis and deep understanding. Because this mill is the first one in the world and pipe diameter 711mm is the largest one then & the most difficult part. Our technicians in my company make the bold experiments, detailed design, and repeat tries. Fortunately, 219-711 straight seam submerged-arc welding machine is successfully developed at the end of 2012.