Notes

basic intro<br>
Hydraulic pipelines, simn are detailed separately because of the 5 major components (carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S).

1. Seamless steel pipe for liquid: GB8163-99

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

3. High stress smooth pipe for central heating boiler: GB5310-95 (ST45.8- kind).

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

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


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

7. Seamless steel pipeline for petroleum splitting: GB9948-88.

8. Special smooth 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 precision smooth steel pipe: GB3639-1999.

Different alloy pipelines 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo steel pipelines are divided right into seamless steel pipes as well as bonded steel pipelines according to different manufacturing procedures. Seamless steel pipelines are seamless steel pipelines made from steel ingots, pipe billets or steel poles perforated.

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

Advantages of hydraulic.

Compared to mechanical transmission and also electrical transmission, hydraulic transmission has the following benefits:.

1. Various parts of hydraulic transmission can be comfortably as well as flexibly organized according to requirements.

2. Lightweight, tiny dimension, little movement inertia and also rapid reaction speed.

3. Convenient operation and also control, which can understand stepless rate regulation in a vast range (rate policy variety up to 2000:1).

4. The overload defense can be understood immediately.

5. Normally, mineral oil is utilized as the working medium, the family member moving surface can be lubed on its own, as well as the solution life is long;.

6. It is simple to realize straight motion/.

7. It is very easy to understand the automation of the machine. When the electro-hydraulic consolidated control is taken on, not only a greater level of automatic control procedure can be realized, but likewise remote can be realized.

Disadvantages of hydraulics.

1. Because of the huge fluid flow resistance and leak, the performance is low. If not handled properly, the leakage will certainly not only contaminate the site, but might additionally trigger fire and surge accidents.

2. As the functioning performance is easily affected by temperature level changes, it is not suitable to work under really reduced or really high temperature level problems.

3. brass hose pipe fitting couping copper connector manufacturing precision of hydraulic components is high, so the price is extra pricey.

4. As a result of the leakage and compressibility of the liquid tool, a strict transmission proportion can not be obtained.

5. When the hydraulic transmission stops working; the use as well as upkeep need a higher technical degree, it is not easy to find out the reason.

Adapter installation.

The hose pipe must not be excessively bent when it is relocating or at remainder, nor can it be curved at the origin, yet need to start to bend at least 1.5 times its size;.

When the hose is relocated to a severe setting, it must not be drawn too snugly, it should be loose;.

Try to stay clear of torsional deformation of the hose;.

Keep the tube as far as possible from the heat radiating parts, and it is essential to set up a thermal barrier;.

Stay clear of external damages to the hose pipe, such as long-lasting friction externally of the very same part throughout usage;.

If the pipe's very own weight creates extreme contortion, there ought to be support components.

Pipeline installment.

Before setup, all steel pipelines can be pickled initially, especially the steel pipelines attached to the ferrule kind pipeline joints should be pickled first, and afterwards the ferrule is fastened to the pipeline end ahead of time;.

All pipe joints should be cleaned with kerosene prior to installment, the O-rings inside should be briefly eliminated for storage, and after that put on after the official installment;.

Throughout building and construction, keep the oil ports, pipeline joints, pipe ends and also various other openings of pumps, distributors as well as other equipment tidy, and do not permit international objects such as water and also dirt to go into;.

The pipe will be laid in a complimentary state, and the bonded pipeline shall not be forcibly fixed and also connected by using excessive radial force;.

The oil opening of the bearing seat must be checked in advance to see if the interior oil circuit is unblocked and if the oil port thread matches the joint.

Pipeline cleaning.

In order to make certain the sanitation of the lubrication system as well as supply the bearings of mechanical tools with clean oil, the pre-installed pipes should be removed and also cleaned. There are two kinds of cleaning: kerosene cleaning and also pickling.

( 1) Objects and approaches of kerosene cleansing.

Things. Copper pipes, stainless-steel pipes;.

technique. 1. The steel pipes that have been marinaded before pre-installation, as well as the inner wall surface is devoid of corrosion and iron scale; 2. The pipeline joints that were soiled throughout the pre-installation; 3. Get rid of the pipelines and also joints that need to be cleaned up, as well as make use of fabric (( It is required not to lose woollen). Wipe the inside of television with kerosene, soak both ends as well as joints in kerosene to tidy, then layer the inside of the tube with engine oil or fill with grease, and seal both finishes for installment; 4. After cleaning, there must be no noticeable contaminants. (Such as iron filings, coarse contaminations, welding slag, etc), pay unique attention to the welding slag on the internal wall of the weld have to be extensively cleaned.

( 2) Pickling objects and also approaches.

Object. Steel pipelines that have actually not been marinaded before pre-installation; steel pipes that have actually been marinaded however are currently significantly worn away.

Use clean water to remove the dust on the pipe; 3. Rinse with clean water For the attachments created in the above operations, the within of the pipe ought to be cleaned with high-pressure water; 5. In order to effectively dry the pipeline, the pipeline should be immersed in hot water or vapor dried.



The steel pipelines that have been pickled before pre-installation, and also the inner wall surface is free of rust and also iron range; 2. Get rid of the pipelines and also joints that require to be cleaned, as well as make use of fabric (( It is required not to drop woollen). Usage tidy water to remove the dust on the pipe; 3. Wash with clean water For the attachments created in the above operations, the inside of the pipe must be cleaned with high-pressure water; 5. In order to efficiently dry the pipe, the pipe ought to be immersed in hot water or heavy steam dried out.

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