Notes

fundamental introduction<br>
Hydraulic pipelines, simn are noted independently due to the five significant elements (carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S).

1. Seamless steel pipe for fluid: GB8163-99

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

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

4. High-pressure seamless steel pipes for fertilizer equipment: GB6479-1999.

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

6. Seamless steel pipeline for oil drilling: YB528-65.

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

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

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

10. 1bh hydraulic hose adaptor fitting bspp male/metric o-ring male adapter for ships: GB5312-1999.

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

Numerous alloy pipes 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo steel pipelines are separated right into smooth steel pipes and also bonded steel pipelines according to different production processes. Seamless steel pipes are seamless 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).

Benefits of hydraulic.

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

1. Numerous components of hydraulic transmission can be conveniently as well as flexibly arranged according to needs.

2. Light weight, little size, tiny activity inertia and also rapid response rate.

3. Hassle-free procedure and control, which can realize stepless rate regulation in a large range (speed guideline array approximately 2000:1).

4. The overload protection can be understood automatically.

5. Generally, mineral oil is used as the working tool, the family member moving surface can be lubed by itself, and the solution life is long;.

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

7. It is simple to recognize the automation of the machine. When the electro-hydraulic mixed control is taken on, not only a higher degree of automatic control procedure can be realized, but also push-button control can be understood.

Negative aspects of hydraulics.

1. Due to the big fluid flow resistance and leakage, the efficiency is low. Otherwise dealt with effectively, the leakage will certainly not only contaminate the site, yet might additionally cause fire and also surge crashes.

2. As the working performance is conveniently impacted by temperature adjustments, it is not ideal to work under very high or very reduced temperature level conditions.

3. The production precision of hydraulic components is high, so the price is more costly.

4. As a result of the leakage and compressibility of the fluid tool, a strict transmission ratio can not be acquired.

5. It is challenging to learn the reason when the hydraulic transmission fails; the use as well as maintenance call for a higher technical degree.

Connector setup.

The hose pipe must not be exceedingly curved when it is moving or at remainder, nor can it be curved at the root, but should start to flex at the very least 1.5 times its diameter;.

When the pipe is moved to a severe setting, it needs to not be drawn also tightly, it needs to hang;.

Attempt to avoid torsional contortion of the pipe;.

Maintain the hose as far as possible from the warm emitting parts, as well as it is necessary to mount a thermal barrier;.

Stay clear of external damage to the hose pipe, such as long-lasting friction externally of the exact same part during use;.

If the pipe's own weight triggers extreme contortion, there need to be assistance parts.


Pipeline setup.

Before setup, all steel pipes can be marinaded first, specifically the steel pipelines attached to the ferrule kind pipeline joints must be marinaded initially, and after that the ferrule is fastened to the pipeline end beforehand;.

All pipeline joints need to be cleaned with kerosene prior to installment, the O-rings inside ought to be briefly gotten rid of for storage, as well as then place on after the official setup;.

During construction, maintain the oil ports, pipeline joints, pipe ends and various other openings of pumps, distributors and various other tools clean, as well as do not allow international objects such as water and also dust to go into;.

The pipe shall be stocked a complimentary state, and the bonded pipe shall not be forcibly dealt with and linked by using extreme radial force;.

The oil opening of the bearing seat need to be inspected in development to see if the internal oil circuit is unblocked as well as if the oil port thread matches the joint.

Pipeline cleansing.

In order to ensure the sanitation of the lubrication system and supply the bearings of mechanical equipment with clean grease, the pre-installed pipelines have to be removed and also cleaned. There are 2 kinds of cleansing: kerosene cleaning and pickling.

( 1) Items and also techniques of kerosene cleansing.

Item. Copper pipelines, stainless-steel pipes;.

The steel pipes that have been marinaded prior to pre-installation, and also the inner wall is cost-free of rust and also iron range; 2. The pipeline joints that were soiled throughout the pre-installation; 3. Get rid of the pipelines and also joints that need to be cleansed, and also utilize cloth (( It is essential not to shed wool).

( 2) Pickling items as well as methods.

Object. Steel pipes that have actually not been marinaded prior to pre-installation; steel pipes that have been marinaded but are now significantly corroded.

Usage clean water to remove the dirt on the pipeline; 3. Wash with clean water For the accessories produced in the above operations, the inside of the pipe must be cleaned with high-pressure water; 5. In order to effectively dry the pipeline, the pipeline needs to be submersed in warm water or steam dried out.



The steel pipes that have been pickled before pre-installation, as well as the internal wall is free of corrosion and also iron range; 2. Remove the pipelines and joints that require to be cleansed, and utilize towel (( It is needed not to drop wool). Use tidy water to get rid of the dust on the pipeline; 3. Wash with clean water For the attachments created in the above operations, the within of the pipeline should be washed with high-pressure water; 5. In order to successfully dry the pipeline, the pipeline must be immersed in warm water or heavy steam dried.

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