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http://cqms.skku.edu/b/lecture/848274 , simn are listed separately because of the five major elements (carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S).1. Seamless steel pipeline for fluid: GB8163-992. Smooth steel pipe for boiler: GB3087-19993. High stress smooth pipeline for central heating boiler: GB5310-95 (ST45.8- kind).4. High-pressure smooth steel pipes for plant food tools: GB6479-1999.5. Seamless steel pipe for geological drilling: YB235-70.6. Smooth steel pipe for oil exploration: YB528-65.7. Seamless steel pipeline for petroleum splitting: GB9948-88.8. Unique smooth pipeline for oil drill collar: YB691-70.9. Seamless steel pipeline for auto half shaft: GB3088-1999.10. Smooth steel pipe for ships: GB5312-1999.11. Cold-drawn cold-rolled accuracy smooth steel pipe: GB3639-1999.Numerous alloy pipelines 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo steel pipelines are split right into smooth steel pipelines as well as welded steel pipes according to different manufacturing procedures. Seamless steel pipes are smooth steel pipelines made from steel ingots, pipeline billets or steel rods perforated.Hydraulic pipe weight formula: [( external diameter-wall thickness) * wall thickness) * 0.02466= kg/m (weight per meter).Advantages of hydraulic.Contrasted with mechanical transmission and also electric transmission, hydraulic transmission has the complying with advantages:.1. Different parts of hydraulic transmission can be conveniently and flexibly prepared according to demands.2. Lightweight, little dimension, small movement inertia and quick response rate.<img width="445" src="http://i.ebayimg.com/images/i/231446472299-0-1/s-l1000.jpg">3. Practical operation as well as control, which can realize stepless speed regulation in a vast array (speed law range up to 2000:1).4. https://www.click4r.com/posts/g/3759357/basic-introduction-lt-br-gt can be recognized instantly.5. Generally, mineral oil is utilized as the working medium, the loved one moving surface area can be lubed by itself, as well as the service life is long;.6. It is easy to recognize direct movement/.7. It is easy to recognize the automation of the maker. When the electro-hydraulic consolidated control is taken on, not only a greater degree of automatic control process can be understood, yet likewise push-button control can be understood.Disadvantages of hydraulics.1. As a result of the huge liquid circulation resistance as well as leakage, the effectiveness is low. If not dealt with appropriately, the leak will certainly not only pollute the website, however may likewise trigger fire and explosion accidents.2. As the working performance is easily influenced by temperature level modifications, it is not ideal to work under really high or very reduced temperature conditions.3. The production accuracy of hydraulic components is high, so the price is much more costly.4. Because of the leak and also compressibility of the fluid medium, a stringent transmission proportion can not be acquired.5. When the hydraulic transmission falls short; the usage as well as maintenance require a higher technological level, it is not simple to discover out the reason.Port installment.The hose pipe ought to not be exceedingly bent when it is moving or at rest, neither can it be curved at the root, however ought to start to flex at the very least 1.5 times its diameter;.When the hose is moved to an extreme setting, it ought to not be pulled also firmly, it should hang;.Attempt to prevent torsional contortion of the tube;.Keep the tube as away as possible from the heat radiating parts, and it is necessary to mount a thermal barrier;.Stay clear of external damages to the hose pipe, such as long-term rubbing on the surface area of the very same part throughout usage;.If the tube's own weight triggers extreme contortion, there ought to be support parts.Pipe setup.Prior to setup, all steel pipes can be pickled first, particularly the steel pipelines connected to the ferrule kind pipeline joints must be pickled initially, as well as after that the ferrule is fastened to the pipe end ahead of time;.All pipe joints ought to be cleaned up with kerosene prior to installment, the O-rings inside should be briefly gotten rid of for storage, and after that place on after the official installation;.During building, keep the oil ports, pipeline joints, pipe ends and various other openings of pumps, suppliers and various other equipment tidy, as well as do not permit international items such as water as well as dirt to get in;.The pipeline will be stocked a complimentary state, as well as the bonded pipeline will not be forcibly repaired and also attached by using too much radial force;.The oil hole of the bearing seat should be signed in advance to see if the internal oil circuit is unblocked as well as if the oil port string matches the joint.Pipe cleansing.In order to make certain the tidiness of the lubrication system as well as provide the bearings of mechanical devices with tidy oil, the pre-installed pipelines need to be removed and also cleaned. There are two sorts of cleansing: kerosene cleansing and also pickling.( 1) Items and also approaches of kerosene cleansing.Item. Copper pipelines, stainless steel pipelines;.method. 1. The steel pipelines that have actually been marinaded before pre-installation, and also the inner wall surface is devoid of corrosion and also iron scale; 2. The pipe joints that were soiled throughout the pre-installation; 3. Eliminate the pipelines and also joints that need to be cleaned up, as well as utilize fabric (( It is essential not to shed woollen). Clean the within television with kerosene, soak both ends and joints in kerosene to clean, after that coat the within the tube with engine oil or full of grease, as well as seal both finishes for installation; 4. After cleaning, there must be no visible pollutants. (Such as iron filings, fibrous impurities, welding slag, and so on), pay unique focus to the welding slag on the internal wall of the weld need to be extensively cleaned.( 2) Pickling techniques and also things.Things. Steel pipelines that have actually not been marinaded prior to pre-installation; steel pipelines that have been pickled yet are now severely corroded.technique. 1. Make use of a degreasing representative to remove the grease sticking to the pipe; 2. Usage tidy water to eliminate the dust on the pipe; 3. Get rid of the corrosion areas on the pipe wall surface, rolled iron filings, etc in the pickling option; 4. Wash with clean water For the attachments generated in the above procedures, the within of the pipeline need to be washed with high-pressure water; 5. Neutralize the acid option remaining on the pipeline with lye; 6. In order to properly dry the pipeline, the pipe needs to be submersed in warm water or vapor dried. Make the pipes dry; 7. Inspect the pickled pipelines to see if they are clean; 8. Seal the opening of the pipe with plastic or plastic tape promptly after pickling to avoid international matter and also dampness from intruding [1]The steel pipelines that have actually been pickled prior to pre-installation, and also the inner wall surface is cost-free of corrosion and iron range; 2. Eliminate the pipes as well as joints that need to be cleaned up, as well as make use of towel (( It is needed not to shed wool). Usage clean water to remove the dust on the pipeline; 3. Wash with clean water For the attachments produced in the above operations, the within of the pipeline need to be cleaned with high-pressure water; 5. In order to effectively dry out the pipe, the pipe should be submersed in hot water or steam dried out.