Notes

fundamental intro<br>
fittings for hose , simn are provided independently as a result of the five significant aspects (carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S).

1. Seamless steel pipeline for liquid: GB8163-99

2. Seamless steel pipeline for boiler: GB3087-1999

3. High pressure seamless pipe for boiler: GB5310-95 (ST45.8- kind).


4. High-pressure smooth steel pipelines for plant food equipment: GB6479-1999.

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

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

7. Seamless steel pipeline for oil breaking: GB9948-88.

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

9. Smooth steel pipe for car half shaft: GB3088-1999.

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

11. Cold-drawn cold-rolled accuracy smooth steel pipeline: GB3639-1999.

Various alloy pipelines 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo steel pipelines are divided right into smooth steel pipes and also bonded steel pipes according to different manufacturing processes. Seamless steel pipes are smooth steel pipes made from steel ingots, pipeline billets or steel rods perforated.

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

Advantages of hydraulic.

Compared with mechanical transmission as well as electric transmission, hydraulic transmission has the following benefits:.

1. Various elements of hydraulic transmission can be comfortably and also flexibly set up according to demands.

2. Lightweight, tiny size, tiny movement inertia and rapid response speed.

3. Hassle-free procedure as well as control, which can realize stepless rate guideline in a variety (speed guideline range as much as 2000:1).

4. The overload protection can be understood instantly.

5. Normally, mineral oil is utilized as the working tool, the family member relocating surface area can be oiled by itself, as well as the solution life is long;.

6. It is very easy to understand linear motion/.

7. It is very easy to understand the automation of the maker. When the electro-hydraulic combined control is adopted, not just a higher degree of automatic control process can be understood, however additionally push-button control can be understood.

Disadvantages of hydraulics.

1. Because of the big fluid flow resistance and leak, the performance is low. If not handled properly, the leak will certainly not only pollute the website, but might additionally create fire and also surge accidents.

2. As the functioning efficiency is easily affected by temperature level changes, it is not ideal to work under really high or really low temperature level conditions.

3. The production accuracy of hydraulic parts is high, so the price is extra pricey.

4. Because of the leak and also compressibility of the fluid tool, a stringent transmission proportion can not be acquired.

5. It is challenging to discover the cause when the hydraulic transmission falls short; the usage as well as upkeep require a higher technical level.

Adapter installation.

The hose should not be exceedingly bent when it is relocating or at rest, nor can it be bent at the origin, yet should start to bend at the very least 1.5 times its diameter;.

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

Attempt to avoid torsional contortion of the tube;.

Keep the tube as far as feasible from the heat radiating parts, as well as it is necessary to set up a heat guard;.

Avoid outside damages to the tube, such as lasting rubbing externally of the very same component throughout use;.

If the tube's own weight causes too much contortion, there should be assistance parts.

Pipe installment.

Prior to setup, all steel pipes can be marinaded first, particularly the steel pipes linked to the ferrule type pipeline joints must be pickled initially, as well as after that the ferrule is attached to the pipe end in advance;.

All pipeline joints ought to be cleaned with kerosene before installment, the O-rings inside should be temporarily eliminated for storage, and after that put on after the formal setup;.

During building, keep the oil ports, pipeline joints, pipeline ends and various other openings of pumps, representatives and other tools clean, as well as do not allow foreign objects such as water and dust to get in;.

The pipeline will be laid in a complimentary state, as well as the welded pipe will not be by force 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 inner oil circuit is unblocked as well as if the oil port thread matches the joint.

Pipeline cleaning.

In order to guarantee the cleanliness of the lubrication system and supply the bearings of mechanical equipment with clean oil, the pre-installed pipelines have to be gotten rid of as well as cleansed. There are 2 sorts of cleaning: kerosene cleaning as well as pickling.

( 1) Things and techniques of kerosene cleaning.

Object. Copper pipes, stainless steel pipes;.

technique. 1. The steel pipelines that have been marinaded prior to pre-installation, as well as the inner wall surface is without corrosion and iron range; 2. The pipe joints that were stained throughout the pre-installation; 3. Eliminate the pipes and joints that need to be cleansed, as well as make use of cloth (( It is necessary not to shed woollen). Wipe the within of the tube with kerosene, soak both ends as well as joints in kerosene to tidy, then coat the within television with engine oil or full of grease, and also seal both finishes for installation; 4. After cleaning, there must be no visible pollutants. (Such as iron filings, coarse pollutants, welding slag, and so on), pay special focus to the welding slag on the internal wall surface of the weld should be thoroughly cleaned up.

( 2) Marinading objects and techniques.

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

Usage tidy water to remove the dust on the pipe; 3. Rinse with clean water For the add-ons generated 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 must be submersed in warm water or vapor dried out.



The steel pipelines that have actually been pickled before pre-installation, and the inner wall is free of corrosion and iron scale; 2. Remove the pipes and also joints that need to be cleaned up, and use fabric (( It is needed not to lose wool). Use clean water to remove the dirt on the pipe; 3. Rinse with clean water For the attachments produced in the above procedures, the inside of the pipe ought to be washed with high-pressure water; 5. In order to properly dry the pipe, the pipe should be submersed in warm water or vapor dried.

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