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Hydraulic pipes, simn are noted separately due to the five significant components (carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S).1. Seamless steel pipeline for fluid: GB8163-992. Seamless steel pipe for central heating boiler: GB3087-19993. High pressure smooth pipe for central heating boiler: GB5310-95 (ST45.8- type).4. High-pressure smooth steel pipes for plant food devices: GB6479-1999.5. Seamless steel pipeline for geological boring: YB235-70.6. Seamless steel pipeline for oil exploration: YB528-65.7. Seamless steel pipe for petroleum splitting: GB9948-88.8. Special seamless pipeline for oil drill collar: YB691-70.9. Smooth steel pipeline for automobile half shaft: GB3088-1999.10. Seamless steel pipeline for ships: GB5312-1999.11. Cold-drawn cold-rolled accuracy smooth steel pipe: GB3639-1999.Various alloy pipelines 16Mn, 27SiMn?, 15CrMo?, 35CrMo?, 12CrMov?, 20G, 40Cr, 12Cr1MoV, 15CrMo? steel pipes are divided right into smooth steel pipelines and welded steel pipes according to various manufacturing procedures. Seamless steel pipes are smooth steel pipelines made from steel ingots, pipeline billets or steel rods perforated.Hydraulic pipeline weight formula: [( external diameter-wall density) * wall density) * 0.02466= kg/m (weight per meter).Advantages of hydraulic.Compared with mechanical transmission and also electric transmission, hydraulic transmission has the following advantages:.1. Various components of hydraulic transmission can be easily and flexibly organized according to needs.2. Lightweight, tiny size, small activity inertia as well as quick response speed.3. Convenient operation as well as control, which can recognize stepless rate law in a vast array (rate guideline range approximately 2000:1).4. The overload security can be recognized automatically.5. Usually, mineral oil is utilized as the working tool, the loved one relocating surface area can be oiled by itself, and the solution life is long;.6. It is easy to realize linear activity/.<img width="454" src="">7. It is simple to understand the automation of the machine. When the electro-hydraulic mixed control is taken on, not just a higher degree of automatic control procedure can be recognized, however likewise push-button control can be realized.Disadvantages of hydraulics.1. As a result of the large liquid flow resistance and leakage, the performance is low. If not handled appropriately, the leakage will not only infect the site, but might likewise trigger fire and explosion accidents.2. As the functioning performance is easily impacted by temperature adjustments, it is not ideal to work under very reduced or really high temperature level problems.3. The production precision of hydraulic parts is high, so the rate is much more expensive.4. Due to the leakage and also compressibility of the liquid tool, a rigorous transmission ratio can not be obtained.5. When the hydraulic transmission falls short; the use and maintenance need a greater technical level, it is not easy to locate out the reason.Port installment.The tube should not be exceedingly bent when it is moving or at remainder, nor can it be curved at the root, however should begin to flex a minimum of 1.5 times its diameter;.When the hose is transferred to a severe placement, it should not be pulled as well securely, it needs to hang;.Try to prevent torsional deformation of the pipe;.Maintain the hose pipe as away as feasible from the warmth emitting components, and it is essential to install a thermal barrier;.Prevent exterior damage to the tube, such as lasting friction on the surface of the very same component throughout use;.If the tube's very own weight triggers excessive contortion, there ought to be support components.Pipeline installation.Prior to installment, all steel pipes can be marinaded first, specifically the steel pipes connected to the ferrule kind pipeline joints must be pickled first, and after that the ferrule is fastened to the pipeline end beforehand;.All pipeline joints ought to be cleaned with kerosene prior to installation, the O-rings inside must be briefly eliminated for storage space, and after that place on after the official installation;.During building, maintain the oil ports, pipe joints, pipeline ends and also various other openings of pumps, suppliers as well as other tools tidy, as well as do not enable foreign things such as water and also dirt to enter;.The pipeline will be laid in a cost-free state, as well as the welded pipe shall not be forcibly taken care of as well as linked by applying excessive radial pressure;.The oil hole of the bearing seat should be signed in advancement to see if the interior oil circuit is unblocked and if the oil port string matches the joint.Pipe cleansing.In order to make sure the tidiness of the lubrication system as well as supply the bearings of mechanical equipment with clean grease, the pre-installed pipelines have to be gotten rid of and also cleaned up. There are 2 sorts of cleansing: kerosene cleaning as well as pickling.( 1) Items and also approaches of kerosene cleaning.Item. http://www.liujin-fittings.com/2-hours-replied-factory-supply-brozen-copper-air-conditioning-parts-double-tube-o-ring-equalizer-expansion-valve-38115-pd47156763.html , stainless-steel pipes;.method. 1. The steel pipes that have actually been marinaded prior to pre-installation, as well as the inner wall is totally free of corrosion as well as iron scale; 2. The pipeline joints that were stained throughout the pre-installation; 3. Eliminate the pipelines and joints that require to be cleaned, and also utilize cloth (( It is needed not to drop wool). Wipe the within the tube with kerosene, saturate both ends as well as joints in kerosene to tidy, then layer the within of television with engine oil or loaded with oil, and seal both ends for installment; 4. After cleaning, there need to be no visible pollutants. (Such as iron filings, coarse contaminations, welding slag, and so on), pay unique focus to the welding slag on the inner wall surface of the weld have to be completely cleaned.( 2) Pickling objects as well as approaches.Object. Steel pipes that have not been pickled before pre-installation; steel pipelines that have been marinaded yet are now badly rusted.method. 1. Use a degreasing representative to get rid of the grease sticking to the pipeline; 2. Use clean water to get rid of the dust on the pipe; 3. Eliminate the rust spots on the pipe wall surface, rolled iron filings, etc in the pickling option; 4. Wash with clean water For the accessories produced in the above procedures, the within the pipe need to be cleaned with high-pressure water; 5. Counteract the acid option continuing to be on the pipe with lye; 6. In order to efficiently dry out the pipeline, the pipeline ought to be immersed in hot water or vapor dried. Make the pipes dry; 7. Examine the pickled pipes to see if they are clean; 8. Seal the opening of the pipeline with plastic or plastic tape immediately after pickling to protect against foreign issue and wetness from intruding [1]The steel pipes that have actually been pickled prior to pre-installation, and also the inner wall surface is totally free of rust as well as iron range; 2. Get rid of the pipelines and joints that require to be cleansed, as well as utilize towel (( It is needed not to lose wool). Use http://www.liujin-fittings.com/1BT-12L-air-hose-swivel-hydraulic-fittings-china-flexible-pipe-fittings-hydraulic-hose-pd49826763.html to get rid of the dirt on the pipeline; 3. Rinse with tidy water For the accessories generated in the above operations, the inside of the pipe need to be washed with high-pressure water; 5. In order to effectively dry the pipeline, the pipeline needs to be immersed in warm water or heavy steam dried out.