Precision welded pipe is a generalized concept with many different individual quality requirements depending on the requirements of use. Precision welded pipe is the result of further improvement on the basis of general welded pipe, and is a fine product in welded pipe products. First, the main features of precision welded pipe With precise geometrical dimensions, uniform lateral wall thickness, good shape of steel pipe, small ovality, reliable weld quality, small internal burrs, smooth outer surface, heat treatment of welded steel pipe or protective atmosphere, it can achieve oxygen-free surface. The mechanical properties are stable and the metallographic structure is uniform. The production cost is much lower than that of similar seamless precision steel pipes. It can be used directly or after a small amount of processing on some equipment to reduce equipment processing costs. Second, the precision pipe welding process 1 Precision welding pipe manufacturing process: The production process of precision welded pipes varies slightly with different production methods, but the production process of forming welded parts is basically the same, and the difference is only in the later steps. The typical production process is as follows: 1.1 The first production mode production process: strip steel preparation → unwinding → leveling → cutting head tail → butt welding → loop sleeve storage → forming → welding → removing burrs → weld heat treatment → cooling → sizing → nondestructive testing → Flying shearing → straightening → cutting flat head → eddy current testing / hydraulic testing → inspection packaging → finished product 1.2 The second production method production process: Strip preparation → unwinding → leveling → cutting head tail → butt welding → loop sleeve storage → forming → welding → removing burrs → weld heat treatment → cooling → sizing → nondestructive testing → flying shearing → preparation (drawing) - rolling head heat treatment pickling phosphating, saponification cold drawing machine straightening (cold rolling) Cut flat oil lubrication - cold rolling mill eddy current testing acceptance package finished product 1.3 The third production mode production process: Strip preparation → unwinding → leveling → cutting head tail → butt welding → loop sleeve storage → forming → welding → removing burrs → cooling → cold reducer → nondestructive testing → flying shearing → heat treatment → straightening → flat cutting → Eddy current flaw detection → Acceptance packaging → Finished product 2 Production equipment: In the typical three production process, the main equipment of the pipe, the cold forming machine of the welded pipe forming unit, the cold rolling unit and the cold reducing unit have a decisive effect on the precision welded pipe forming, but there are many types of equipment for precision welding control pipes. The scope is large and the technical performance requirements are different. It must be properly configured to meet the quality requirements of precision welded pipes. 2.1 Weld pipe manufacturing stage: Strip preparation - bench rack or chain conveyor Unwinding - cantilever or double cone unwinder Strip leveling - roll leveler Shear - oblique blade shear Butt welding - butt welding machine Looper storage - looper (box, cage, screw, tunnel, etc.) Milling edge planing---milling edge planing machine Forming - continuous forming machine (roller, row roll, FF forming, etc.) Welding - high frequency induction or contact heating welding device Clearing burrs - internal and external deburring devices (both inline and out of line) Weld heat treatment - medium frequency linear induction heating device (or overall heat treatment of steel pipe) Cooling - air cooling and cooling water jacket Sizing - continuous sizing machine (roller type) Non-destructive testing - ultrasonic or eddy current testing equipment Flying shears - flying shears (punching, rolling, sawing, milling, etc.) Straightening - roll straightening machine (five to seven rolls) Cut flat head - cutting machine and flat head machine and stepping frame Eddy current flaw detection - eddy current flaw detector (instead of hydraulic test) Hydraulic test - hydraulic test tube machine (single or multiple) 2.2 Cold drawn cold rolling stage: Rolling head - rolling head or hammer machine Intermediate heat treatment - continuous roll annealing furnace. Pickling, cleaning - pickling, washing tanks and flushing facilities Phosphating, saponification - phosphating, saponification pool Cold drawing - cold drawing unit Lubrication - lubrication pool Cold rolling - roll cold rolling mill Finished heat treatment - protective atmosphere heat treatment furnace (chamber or roller bottom) 2.3 Cold reduction stage: Cold reduction – cold reduction unit (two or three-roll cold reduction unit frame is configured according to total deformation) Due to the variety, size and technical requirements of precision welded pipes, the production process and process are different. Some processes take a long time, some processes are short in time, so the production process is prone to imbalance, and a buffer is needed. In order to make the production go smoothly and minimize the weak links, about 90% of the precision welded pipe products have to go through the intermediate warehouse to balance the production capacity. Third, the use of precision welded pipe Precision welded pipes are mainly used in various fields such as chemical, textile, machinery, instrumentation, aviation, and automobiles. Such as cars, motorcycle bumpers, reducers, condensers, tank pipes, drive shafts, silencers, steering shafts, thrust brakes, hydraulic cylinders, cylinders, jacks, various conveyor rollers, belt rollers, printing cylinders, Textile printing and dyeing rolls, drafting tubes for textile and chemical fiber machines, tubes for hydraulic support, tubes for deep well pumps, various mechanical light pipes, outer tubes for electric heaters, pipes for household appliances, etc.
A floor drain is a plumbing fixture that is installed in the floor of a structure, mainly designed to remove any standing water near it. They are usually round, but can also be square or rectangular. They usually range from 2 to 12 inches (5.1 to 30.5 cm); most are 4 inches (10 cm) in diameter. They have gratings that are made of metal or plastic. The floor around the drain is also sloped to allow the water to flow to the drain. Many residential basements have one or more floor drains, usually near a water heater or washer/dryer. Floor drains can also be found in commercial basements, restrooms, kitchens, refrigerator areas, locker/shower rooms, laundry facilities, and near swimming pools, among other places.
Floor Drain,Square Floor Drainer,Stainless Steel Square Floor Drainer,Pop-Up Floor Drain Kaiping Jenor Sanitary Ware Co., Ltd , https://www.jenorsanitary.com