Notes

standard introduction<br>
Hydraulic pipelines, simn are provided independently due to the 5 significant aspects (carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S).

1. Smooth steel pipe for fluid: GB8163-99

2. Smooth steel pipe for boiler: GB3087-1999

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

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

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

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

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

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

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

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

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


Various alloy pipes 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo steel pipes are divided into smooth steel pipes and also welded steel pipelines according to various production procedures. Seamless steel pipes are seamless steel pipelines made from steel ingots, pipeline billets or steel poles perforated.

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

Benefits of hydraulic.

Compared to mechanical transmission and also electric transmission, hydraulic transmission has the adhering to benefits:.

1. Various elements of hydraulic transmission can be comfortably and flexibly arranged according to requirements.

2. Lightweight, tiny size, tiny movement inertia as well as fast response rate.

3. Practical procedure and also control, which can realize stepless speed regulation in a variety (rate policy variety up to 2000:1).

4. The overload defense can be realized automatically.

5. Typically, LIUJIN hydraulic hose fitting is used as the working medium, the family member relocating surface area can be oiled on its own, and the solution life is long;.

6. It is easy to recognize direct activity/.

7. It is easy to realize the automation of the device. When the electro-hydraulic combined control is embraced, not just a greater level of automatic control procedure can be realized, yet likewise remote can be realized.

Negative aspects of hydraulics.

1. Due to the large fluid flow resistance and also leakage, the effectiveness is low. If not handled effectively, the leak will not just contaminate the site, however might additionally cause fire and explosion accidents.

2. As the functioning performance is conveniently affected by temperature level modifications, it is not ideal to function under very reduced or extremely high temperature conditions.

3. The production accuracy of hydraulic components is high, so the rate is more pricey.

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

5. When the hydraulic transmission fails; the usage and also maintenance call for a greater technological degree, it is not easy to locate out the reason.

Port setup.

The pipe ought to not be excessively curved when it is relocating or at remainder, nor can it be bent at the root, yet should begin to flex at the very least 1.5 times its size;.

When the tube is relocated to a severe position, it must not be pulled as well securely, it needs to be loose;.

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

Maintain the tube as away as possible from the warmth radiating parts, as well as it is essential to set up a thermal barrier;.

Prevent outside damage to the pipe, such as lasting friction externally of the very same element during use;.

If the tube's very own weight causes extreme contortion, there need to be assistance components.

Pipe setup.

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

All pipe joints must be cleansed with kerosene prior to installation, the O-rings inside need to be temporarily removed for storage, and afterwards place on after the official installment;.

Throughout building, maintain the oil ports, pipe joints, pipe ends and other openings of pumps, distributors and various other devices tidy, and also do not enable foreign things such as water and also dust to get in;.

The pipe will be laid in a complimentary state, as well as the welded pipe shall not be by force repaired and linked by applying too much radial force;.

The oil hole of the bearing seat must be examined in advancement to see if the interior oil circuit is unblocked as well as if the oil port string matches the joint.

Pipeline cleaning.

In order to make certain the tidiness of the lubrication system and also supply the bearings of mechanical tools with clean grease, the pre-installed pipelines have to be removed as well as cleaned. There are two kinds of cleansing: kerosene cleansing and pickling.

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

Things. Copper pipelines, stainless-steel pipes;.

approach. 1. The steel pipes that have actually been marinaded prior to pre-installation, and the inner wall surface is devoid of rust and iron range; 2. The pipeline joints that were stained throughout the pre-installation; 3. Eliminate the pipes as well as joints that need to be cleaned up, as well as make use of fabric (( It is essential not to drop woollen). Clean the within the tube with kerosene, soak both ends and joints in kerosene to clean, after that coat the within television with engine oil or loaded with grease, as well as seal both ends for setup; 4. After cleaning, there should be no visible pollutants. (Such as iron filings, fibrous pollutants, welding slag, etc), pay unique interest to the welding slag on the inner wall surface of the weld need to be extensively cleaned up.

( 2) Pickling things and also approaches.

Object. Steel pipes that have actually not been marinaded prior to pre-installation; steel pipes that have been marinaded however are now seriously rusted.

Use clean water to remove the dust on the pipe; 3. Wash with clean water For the add-ons produced in the above operations, the within of the pipeline should be washed with high-pressure water; 5. In order to successfully dry the pipe, the pipe should be immersed in hot water or steam dried out.



The steel pipelines that have actually been pickled before pre-installation, as well as the inner wall surface is free of rust and also iron scale; 2. Remove the pipelines as well as joints that need to be cleansed, and utilize cloth (( It is essential not to drop woollen). Use clean water to remove the dust on the pipeline; 3. Wash with clean water For the add-ons generated in the above operations, the within of the pipe must be washed with high-pressure water; 5. In order to properly dry out the pipeline, the pipeline must be submersed in warm water or heavy steam dried out.

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