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Hydraulic pipelines, simn are provided independently as a result of the 5 significant components (carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S).

1. Seamless steel pipeline for fluid: GB8163-99

2. Smooth steel pipeline for central heating boiler: GB3087-1999

3. High stress seamless pipeline for boiler: GB5310-95 (ST45.8- type).

4. High-pressure smooth steel pipelines for fertilizer tools: GB6479-1999.

5. Seamless steel pipeline for geological boring: YB235-70.

6. hydraulic adapter fitting for oil drilling: YB528-65.

7. Smooth steel pipeline for petroleum cracking: GB9948-88.

8. Unique seamless pipe 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 precision smooth steel pipe: GB3639-1999.

Various alloy pipelines 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo steel pipelines are split right into seamless steel pipelines as well as welded steel pipes according to different production procedures. Smooth steel pipes are seamless steel pipes made from steel ingots, pipe billets or steel poles perforated.

Hydraulic pipe weight formula: [( external diameter-wall density) * wall thickness) * 0.02466= kg/m (weight per meter).

Benefits of hydraulic.

Compared to mechanical transmission as well as electrical transmission, hydraulic transmission has the following advantages:.

1. Different parts of hydraulic transmission can be comfortably as well as flexibly prepared according to needs.

2. Light weight, little size, tiny movement inertia and fast reaction speed.

3. Convenient operation and also control, which can understand stepless rate regulation in a wide variety (rate guideline range approximately 2000:1).


4. The overload protection can be recognized automatically.

5. Typically, mineral oil is made use of as the functioning tool, the relative moving surface can be lubed on its own, as well as the solution life is long;.

6. It is simple to recognize linear activity/.

7. It is very easy to understand the automation of the maker. When the electro-hydraulic mixed control is embraced, not only a greater degree of automated control process can be understood, however also remote can be understood.

Negative aspects of hydraulics.

1. Due to the large liquid circulation resistance and also leak, the effectiveness is low. If not managed appropriately, the leak will certainly not only contaminate the site, yet might additionally trigger fire as well as explosion accidents.

2. As the working efficiency is quickly influenced by temperature changes, it is not suitable to work under extremely high or really reduced temperature level conditions.

3. The manufacturing accuracy of hydraulic parts is high, so the price is extra costly.

4. Due to the leakage and also compressibility of the liquid tool, a rigorous transmission ratio can not be acquired.

5. When the hydraulic transmission falls short; the use and also maintenance require a greater technical degree, it is not simple to locate out the cause.

Connector installation.

The tube should not be excessively curved when it is moving or at remainder, neither can it be bent at the root, however must begin to flex a minimum of 1.5 times its size;.

When the hose pipe is relocated to a severe position, it ought to not be drawn also securely, it needs to hang;.

Attempt to stay clear of torsional contortion of the hose;.

Maintain the tube as away as possible from the heat emitting elements, as well as it is necessary to install a thermal barrier;.

Avoid outside damages to the hose pipe, such as long-term rubbing on the surface of the same component during use;.

If the hose pipe's very own weight creates too much contortion, there must be assistance components.

Pipeline setup.

Prior to setup, all steel pipes can be pickled initially, specifically the steel pipelines linked to the ferrule type pipeline joints must be pickled initially, and after that the ferrule is attached to the pipe end beforehand;.

All pipe joints must be cleaned with kerosene before installment, the O-rings inside must be briefly gotten rid of for storage space, and after that place on after the official setup;.

During construction, maintain the oil ports, pipe joints, pipe ends and various other openings of pumps, suppliers as well as other devices clean, as well as do not enable foreign things such as water and dust to go into;.

The pipeline will be stocked a free state, and also the bonded pipe will not be by force taken care of as well as attached by using excessive radial pressure;.

The oil opening of the bearing seat must be signed in breakthrough to see if the inner oil circuit is unblocked as well as if the oil port thread matches the joint.

Pipe cleansing.

In order to make sure the sanitation of the lubrication system as well as supply the bearings of mechanical devices with tidy grease, the pre-installed pipes need to be gotten rid of and also cleaned. There are two kinds of cleansing: kerosene cleaning and also pickling.

( 1) Items and also techniques of kerosene cleaning.

Object. Copper pipelines, stainless-steel pipelines;.

technique. 1. The steel pipes that have actually been marinaded prior to pre-installation, and also the internal wall surface is devoid of rust and iron range; 2. The pipe joints that were dirtied throughout the pre-installation; 3. Remove the pipelines as well as joints that require to be cleansed, and also use fabric (( It is required not to shed wool). Wipe the within of the tube with kerosene, saturate both ends and also joints in kerosene to tidy, after that coat the inside of the tube with engine oil or full of oil, and also seal both ends for installation; 4. After cleansing, there need to be no visible contaminants. (Such as iron filings, fibrous contaminations, welding slag, and so on), pay special focus to the welding slag on the internal wall surface of the weld must be completely cleansed.

( 2) Pickling things and also approaches.

Item. Steel pipes that have actually not been pickled prior to pre-installation; steel pipes that have actually been marinaded yet are now drastically corroded.

method. 1. Utilize a degreasing agent to get rid of the grease adhering to the pipeline; 2. Usage tidy water to remove the dust on the pipe; 3. Remove the corrosion spots on the pipeline wall, rolled iron filings, and so on in the pickling option; 4. Rinse with clean water For the attachments generated in the above procedures, the inside of the pipeline must be cleaned with high-pressure water; 5. Counteract the acid remedy staying on the pipeline with lye; 6. In order to properly dry the pipe, the pipeline needs to be submersed in hot 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 pipeline with plastic or plastic tape quickly after marinading to avoid contaminant as well as wetness from intruding [1]



The steel pipes that have been marinaded before pre-installation, and the internal wall is free of corrosion and iron range; 2. Get rid of the pipes and also joints that need to be cleaned up, and also utilize cloth (( It is required not to lose wool). Use clean water to remove the dirt on the pipeline; 3. Rinse with clean water For the accessories produced in the above procedures, the within of the pipe must be cleaned with high-pressure water; 5. In order to efficiently dry the pipeline, the pipe should be immersed in warm water or heavy steam dried.

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