Notes

standard introduction<br>
http://www.liujin-fittings.com/Good-service-factory-directly-90-degree-aluminum-elbow-pd45856763.html , simn are noted individually as a result of the 5 significant components (carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S).

1. Smooth steel pipeline for liquid: GB8163-99


2. Seamless steel pipe for central heating boiler: GB3087-1999

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

4. High-pressure seamless steel pipes for plant food devices: GB6479-1999.

5. Seamless steel pipe for geological drilling: YB235-70.

6. Smooth steel pipe for oil exploration: YB528-65.

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

8. Unique smooth pipe for oil drill collar: YB691-70.

9. Seamless steel pipeline for car fifty percent shaft: GB3088-1999.

10. Seamless steel pipeline for ships: GB5312-1999.

11. Cold-drawn cold-rolled accuracy seamless steel pipe: GB3639-1999.

Different alloy pipes 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo steel pipelines are separated right into seamless steel pipelines and welded steel pipelines according to various production processes. Seamless steel pipes are seamless steel pipes made from steel ingots, pipe billets or steel rods perforated.

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

Advantages of hydraulic.

Compared with mechanical transmission as well as electrical transmission, hydraulic transmission has the adhering to benefits:.

1. Different elements of hydraulic transmission can be easily and also flexibly organized according to needs.

2. Light weight, small size, little activity inertia and also rapid reaction rate.

3. Hassle-free operation as well as control, which can recognize stepless speed regulation in a wide variety (speed policy variety approximately 2000:1).

4. The overload security can be understood automatically.

5. Usually, mineral oil is used as the working tool, the family member moving surface can be lubed on its own, and also the solution life is long;.

6. It is very easy to understand direct activity/.

7. It is simple to recognize the automation of the machine. When the electro-hydraulic mixed control is embraced, not only a higher level of automated control procedure can be understood, however likewise remote control can be understood.

Downsides of hydraulics.

1. Due to the huge fluid flow resistance as well as leak, the performance is low. If not dealt with correctly, the leak will not only contaminate the site, yet might also trigger fire and also explosion mishaps.

2. As the functioning efficiency is conveniently influenced by temperature changes, it is not ideal to work under very high or really reduced temperature level problems.

3. The manufacturing accuracy of hydraulic elements is high, so the price is much more expensive.

4. As a result of the leak and compressibility of the fluid medium, a stringent transmission proportion can not be obtained.

5. When the hydraulic transmission fails; the use and also maintenance require a greater technical degree, it is not very easy to find out the reason.

Adapter installation.

The pipe must not be exceedingly bent when it is relocating or at remainder, neither can it be bent at the root, but ought to start to bend at the very least 1.5 times its size;.

When the pipe is relocated to a severe placement, it ought to not be pulled also tightly, it needs to hang;.

Attempt to prevent torsional contortion of the hose pipe;.

Keep the pipe as away as possible from the warm radiating components, and also it is needed to set up a thermal barrier;.

Stay clear of exterior damage to the hose, such as lasting rubbing on the surface of the very same element during usage;.

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

Pipeline installment.

Prior to setup, all steel pipelines can be marinaded initially, especially the steel pipelines linked to the ferrule kind pipeline joints must be marinaded first, and after that the ferrule is attached to the pipe end ahead of time;.

All pipeline joints must be cleaned with kerosene prior to setup, the O-rings inside need to be temporarily removed for storage space, and after that place on after the formal setup;.

During building, maintain the oil ports, pipe joints, pipe ends as well as various other openings of pumps, distributors and other tools clean, and also do not permit foreign items such as water and dust to go into;.

The pipe will be laid in a totally free state, and the bonded pipe will not be forcibly dealt with and attached by using extreme radial force;.

The oil hole of the bearing seat ought to be signed in advancement 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 ensure the sanitation of the lubrication system and provide the bearings of mechanical devices with clean oil, the pre-installed pipelines have to be removed and also cleansed. There are 2 kinds of cleansing: kerosene cleansing and also pickling.

( 1) Objects as well as methods of kerosene cleaning.

Things. Copper pipes, stainless-steel pipelines;.

The steel pipelines that have actually been pickled before pre-installation, and the inner wall surface is totally free of corrosion and also iron range; 2. The pipe joints that were stained throughout the pre-installation; 3. Get rid of the pipelines and joints that need to be cleansed, as well as utilize cloth (( It is necessary not to drop woollen).

( 2) Marinading objects and also approaches.

Item. Steel pipelines that have actually not been pickled before pre-installation; steel pipes that have actually been marinaded however are currently seriously rusted.

method. 1. Utilize a degreasing agent to remove the oil adhering to the pipe; 2. Use clean water to remove the dirt on the pipeline; 3. Remove the rust areas on the pipeline wall, rolled iron filings, and so on in the pickling solution; 4. Rinse with tidy water For the attachments generated in the above procedures, the within the pipeline must be washed with high-pressure water; 5. Reduce the effects of the acid solution remaining on the pipe with lye; 6. In order to successfully dry out the pipeline, the pipe needs to be immersed in warm water or heavy steam dried out. Make the pipelines completely dry; 7. Inspect the pickled pipelines to see if they are clean; 8. Seal the opening of the pipeline with plastic or plastic tape immediately after pickling to avoid foreign matter and moisture from intruding [1]



The steel pipes that have actually been marinaded before pre-installation, as well as the inner wall is totally free of rust as well as iron range; 2. Remove the pipes as well as joints that require to be cleansed, and also use towel (( It is needed not to shed woollen). Use clean water to get rid of the dust on the pipeline; 3. Wash with tidy water For the attachments created in the above operations, the inside of the pipeline must be cleaned with high-pressure water; 5. In order to successfully dry the pipe, the pipeline should be submersed in warm water or steam dried.

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