Notes

standard intro<br>
Hydraulic pipes, simn are provided independently since of the 5 significant aspects (carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S).

1. Seamless steel pipeline for fluid: GB8163-99

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

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

4. High-pressure smooth steel pipes for fertilizer equipment: 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. Seamless steel pipeline for automobile half shaft: GB3088-1999.

10. Seamless steel pipe 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 split right into smooth steel pipes and welded steel pipes according to different manufacturing processes. Smooth steel pipes are seamless steel pipes made from steel ingots, pipe billets or steel rods perforated.

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

Benefits of hydraulic.

Compared to mechanical transmission as well as electric transmission, hydraulic transmission has the complying with advantages:.

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

2. Lightweight, little size, small movement inertia and also fast reaction rate.

3. Practical operation and control, which can recognize stepless speed regulation in a vast array (speed policy array as much as 2000:1).

4. The overload security can be understood instantly.

5. Normally, mineral oil is used as the working tool, the relative moving surface area can be oiled on its own, and the life span is long;.

6. It is simple to recognize direct movement/.

7. It is simple to understand the automation of the equipment. When the electro-hydraulic consolidated control is taken on, not just a higher degree of automated control procedure can be realized, however likewise remote can be recognized.

Negative aspects of hydraulics.

1. Due to the big liquid circulation resistance as well as leakage, the efficiency is reduced. Otherwise managed properly, the leakage will not just contaminate the site, yet may additionally trigger fire and also surge mishaps.

2. As hoses and fittings is quickly affected by temperature level modifications, it is not ideal to function under really reduced or very high temperature level problems.

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

4. Due to the leak and also compressibility of the liquid medium, a strict transmission proportion can not be obtained.

5. When the hydraulic transmission fails; the usage and also upkeep need a higher technological level, it is not easy to find out the reason.

Adapter setup.

The hose pipe needs to not be exceedingly bent when it is relocating or at remainder, neither can it be bent at the origin, but need to begin to bend at the very least 1.5 times its size;.

When the hose is transferred to a severe position, it ought to not be drawn too tightly, it ought to hang;.

Attempt to avoid torsional deformation of the hose pipe;.

Keep the pipe as away as feasible from the warmth emitting elements, and it is required to install a heat guard;.

Prevent exterior damages to the hose pipe, such as lasting friction on the surface of the exact same element throughout usage;.

There should be assistance parts if the pipe's very own weight triggers excessive deformation.

Pipeline installment.

Prior to installment, all steel pipes can be marinaded initially, specifically the steel pipelines linked to the ferrule kind pipe joints must be marinaded first, and after that the ferrule is secured to the pipe end in breakthrough;.

All pipeline joints must be cleaned with kerosene prior to installment, the O-rings inside ought to be briefly eliminated for storage, and also then place on after the formal installation;.

Throughout building, maintain the oil ports, pipeline joints, pipeline ends and also various other openings of pumps, suppliers and various other devices tidy, and do not permit international things such as water and also dust to enter;.

The pipe will be stocked a complimentary state, and the welded pipeline shall not be by force dealt with and also linked by applying excessive radial force;.

The oil opening of the bearing seat need to be examined in advancement to see if the inner oil circuit is unblocked and if the oil port string matches the joint.

Pipeline cleansing.

In order to ensure the sanitation of the lubrication system as well as supply the bearings of mechanical equipment with tidy oil, the pre-installed pipelines must be removed as well as cleaned. There are two types of cleansing: kerosene cleansing and also pickling.

( 1) Things and also approaches of kerosene cleansing.

Item. Copper pipes, stainless steel pipes;.

The steel pipes that have been marinaded prior to pre-installation, and also the internal wall is cost-free of corrosion and iron range; 2. The pipe joints that were dirtied during the pre-installation; 3. Remove the pipes and also joints that require to be cleaned up, as well as make use of towel (( It is necessary not to lose wool).

( 2) Pickling things as well as techniques.

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

approach. 1. Use a degreasing agent to eliminate the oil adhering to the pipe; 2. Use tidy water to remove the dust on the pipeline; 3. Get rid of the rust places on the pipe wall, rolled iron filings, etc in the pickling option; 4. Rinse with clean water For the attachments produced in the above operations, the within the pipe must be washed with high-pressure water; 5. Neutralize the acid service continuing to be on the pipe with lye; 6. In order to properly dry out the pipeline, the pipeline ought to be immersed in warm water or vapor dried. Make the pipelines dry; 7. Inspect the pickled pipes to see if they are clean; 8. Seal the opening of the pipeline with plastic or plastic tape right away after marinading to stop international matter and wetness from intruding [1]



The steel pipelines that have been marinaded prior to pre-installation, and also the inner wall is cost-free of corrosion and iron range; 2. Eliminate the pipelines and joints that need to be cleansed, as well as utilize fabric (( It is necessary not to lose wool). Usage tidy water to remove the dirt on the pipeline; 3. Rinse with tidy water For the attachments created in the above procedures, the inside of the pipe must be washed with high-pressure water; 5. In order to properly dry out the pipe, the pipe must be submersed in warm water or vapor dried out.

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