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Galvanized seamless pipes are generally hot dip galvanized and have a thick galvanized layer for greater corrosion resistance and longer service life. With the improvement of construction quality, the service life and strength requirements of the pipeline system are also increased. Galvanized seamless pipe is often used instead of galvanized steel pipe for fire fighting, air conditioning and other pipeline systems for circulating water and gas medium transmission with higher requirements.

Compared with galvanized seamless steel pipes, galvanized steel pipes are more simple.

可瑞迪特.jpg

Hot dip galvanization is the pickling of welded steel pipe first, in order to remove iron oxide on the surface of the steel pipe, after pickling, through ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank for cleaning,and then it is sent into the hot-dip galvanizing tank.

The hot-dip galvanized steel pipe matrix and the molten plating solution undergo complex physical and chemical reactions to form a corrosion-resistant and compact zinc-iron alloy layer, and the alloy layer is integrated with the pure zinc layer and the steel pipe matrix.Galvanized seamless steel pipe is more corrosion-resistant and expensive than galvanized steel pipe.

Tianjin Credit Import and Export Trading Co., Ltd. manufactures galvanized pipes, seamless pipes, SSAW steel pipes, LSAW steel pipes, and various metal products.


 
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The production process of straight seam steel pipe is relatively simple. The main production processes include high-frequency welding straight seam steel pipe and submerged arc welding straight seam steel pipe. The straight seam steel pipe has high production efficiency, low cost and rapid development.The strength of spiral welded pipe is generally higher than that of straight seam welded pipe. The main production process is submerged arc welding.Compared with the straight seam steel pipe of the same length, the weld length of spiral steel pipe increases by 30-100%, and the production speed is low.

In terms of welding process, the welding method of spiral steel pipe is the same as that of straight seam steel pipe, but there are inevitably many T-joints in the straight seam steel pipe, so the probability of welding defects is greatly increased, and the welding residual stress at the T-joint is large, and the weld metal is often in the three-dimensional stress state, which increases the possibility of cracks.Moreover, according to the regulations of submerged arc welding process, each weld should have an arc striking and arc extinguishing position, but each straight seam steel pipe can not meet this condition when welding the circular seam, so there may be more welding defects at the arc extinguishing position.


 
Slika od Arnab apps
od Arnab apps - sobota, 20. junij 2020, 10:46
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Slika od Michael Zhu
od Michael Zhu - sobota, 20. junij 2020, 10:45
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Since medical ultrasound was used to detect injuries in the early stage, early use of mineral oil (including petroleum jelly, butter), vegetable oil, silicone oil, etc. as an ultrasound gel. However, due to its poor acoustic characteristics, it is difficult to obtain high-quality ultrasound images, and it is easy to irritate the skin, damage the probe, dirty clothes, and not easy to clean, etc., which is gradually not accepted by doctors and patients. With the development of modern ultrasound medicine, there is an urgent need for a safe and effective ultrasound transmission gel. In the end, researchers first chose polymer gel preparations. As early as the early 1980s, when China began to bleed ultrasonic instruments, the medical ultrasound transmission gel that followed the equipment, its main component was carbomer resin, and added neutralizers, wetting agents, preservatives, colorants, etc. Formulated. Those who have studied chemistry should know that carbomer resin is a polyacrylic acid cross-linking compound. It can form a high-viscosity gel at a very low concentration, so it is widely used in the research and production of cosmetics and pharmaceuticals. If you take a closer look at the ingredient list of some gel cosmetics and medicines, it is easy to find the figure of carbomer resin.

Ultrasound Gel

The domestic use of medical ultrasound transmission gel started with the clinical application of ultrasound technology. Because the patented technology is controlled by people, and the imported ultrasound transmission gel is expensive, most domestic hospitals have prepared the ultrasound coupling agent by themselves for a long time. Some hospitals used paste as a couple, but their storage time and physical properties are far from satisfactory The need for an ultrasound examination. In the mid-1990s, the development and production of carbomer gel-type coupling agents began in China. At present, the domestically produced products are all carbomer gel-type, but the product types are relatively monotonous and difficult to adapt to a variety of clinical demand.

The above information is provided by the ultrasound gel supplier.



 
Slika od Michael Zhu
od Michael Zhu - sobota, 20. junij 2020, 10:45
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Ultrasound examination is currently the most widely used clinical screening or examination method. When the patient comes to the ultrasound department of the hospital for the ultrasound examination, the examination site is always coated with a light blue or transparent gel. For the sonographer, this gel is an important tool for ultrasound examination to be carried out smoothly, it is really ordinary, but to patients is quite strange. Next, the instant hand sanitizer gel manufacturer introduces you to ultrasonic gel.

Ultrasound Transmission Gel

First, let's understand why ultrasound is used for this gel. Those who have studied physics should know that when ultrasonic waves hit the interface of two different media, reflections will occur, resulting in less energy for the ultrasonic waves entering the other medium. The degree of reflection of ultrasonic waves is related to a certain index of the two media. This index is the acoustic impedance. Acoustic impedance indicates the ability of a medium to hinder the propagation of ultrasonic waves. Of course, different media will have different acoustic impedances. From a physical point of view, the greater the difference in acoustic impedance between the two media, the more reflections. Therefore, in the ultrasound examination, if the ultrasound probe is in direct contact with the skin, there must be an air-filled cavity between the two, which is equivalent to forming an interface between the ultrasound probe and the air. Due to the large difference in acoustic impedance, when When the ultrasonic wave emitted by the ultrasonic probe travels to the air interface, it will have a strong reflection effect, so that the ultrasonic wave basically cannot enter the body of the human body, and cannot achieve the purpose of diagnostic examination or treatment.

Therefore, according to this physical principle, there is an urgent need for a substance that can be filled between the surface of the ultrasound probe and the surface of the skin to eliminate the interference of air, so that the ultrasound can pass through smoothly, and the loss of sound waves is minimized to maximize the entry in the human body, this substance is the medical ultrasound transmission gel commonly used by ultrasound doctors before ultrasound examination. Of course, in addition to such an important role, the ultrasound gel has another role. The ultrasound gel also acts as a lubricant. Otherwise, without it, the sonographer needs to spend more effort, and the patient's skin will be subjected to more friction damage. Through the analysis of the above physical principles, our requirements for ultrasonic coupling agents are also very simple: it is required to be approximately equal to the acoustic impedance of human tissue to reduce reflection losses; the attenuation coefficient should be small, and the attenuation loss of ultrasonic waves should be minimized; at the probe and skin surface It should be filled better to completely eliminate the air; it can be kept for a long time without drying and stickiness for a long time, so that the probe can smoothly slide and scan; it does not irritate the skin and does not cause damage to the skin; it is easy to clean, etc.


 
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I believe that everyone who has done an ultrasound examination will have a question or complaint. Why does the doctor apply a cool, damp liquid to the body every time an ultrasound examination is done? What is this thing? It’s all over my body. Can I not use this when doing ultrasound?

This sticky thing is medical disinfection ultrasound transmission gel.

Medical ultrasound transmission gel is a medical product composed of a new generation of the aqueous polymer gel. Its PH value is neutral, non-toxic and harmless to the human body, not easy to dry, not easy to rancidity, clear ultrasonic imaging, suitable viscosity, non-greasy, the probe is easy to slide, can moisturize the skin, eliminate the skin surface air, lubricating Good, easy to deploy; no corrosion and damage to the ultrasonic probe. Ultrasound examination is inseparable from couplant.

Ultrasound Transmission Gel

1. Because the medical ultrasonic frequency is 2.5-5M, it cannot be conducted in the air. When there is air in the probe and the skin, the ultrasound will return as soon as it encounters the air, and it will not enter the body and will not be able to check. Therefore, when performing an ultrasound examination, first apply a layer of couplant to the skin to fill the tiny gaps between the skin and the probe, so that the trace of air between these gaps do not affect the penetration of ultrasound, so as to obtain high-quality images. Better diagnose the disease.

2. The coupling agent also plays a "lubricating" role, reducing the friction between the probe surface and the skin, so that the probe can slide flexibly. This is why couplant must be used for ultrasound examinations.

3. As a kind of commonly used consumables in the ultrasonic examination, the selection of ultrasound transmission gel has strict performance requirements in clinical practice. A qualified medical ultrasound transmission gel must be an organic combination of multidisciplinary knowledge such as chemistry, disinfection, ultrasound, and medicine, which fully meets the two basic requirements of safety and effectiveness.

The medical ultrasound transmission gel currently on the market are non-toxic, odorless, non-irritating, non-sticking to the skin and clothing, non-irritating to the skin, allergic, and easy to wipe off. And it has good thixotropy and does not flow, the operation is easy to grasp. Good stability, not affected by climate change.

The above information is provided by the ultrasound gel supplier.



 
Slika od Michael Zhu
od Michael Zhu - sobota, 20. junij 2020, 10:44
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5. Brighten highlight stick

It should be hard to think of a function where lip balm can be used as a highlight stick! Mainly use lip balm to gently apply along the cheeks, not only can moisturize the U area but also can play a brightening effect, so that the cheeks have a sense of light.

In addition, it can also be used in highlight areas such as the bridge of the nose, eyebrows, and chin. The highlight effect created by it is more hydrated and brighter than the powdery highlights, and it also has some transparent texture.

The eyelids of the models often seen on the show are transparent and bright, especially under the light, the color of the eye shadow is more attractive, in fact, it is a lip balm! At this time, choose a thin texture or lip gel. It should be noted that the lip balm should be used after the eyeshadow powder, and the amount must be small to prevent makeup removal.

6. Eyelash growth fluid

Many girls want to use eyelash growth liquid, but a good eyelash growth liquid is expensive, and the effect is not necessarily ideal! So she has been hesitant and entangled, so far has not started.

In fact, you don't have to worry about it at all. The lip balm you don't want to use is the best eyelash growth liquid! Because ordinary lip balm contains oil and nutrients, it is suitable for moisturizing eyelashes and promoting growth! At the same time, it can also be used as an eye primer to prevent eyelashes from falling off when curling eyelashes.

Lip Balm

7. Scent extender

Another magical effect of lip balm is that it can be used to solidify the fragrance! Applying lip balm to the part after spraying the perfume will not only make the fragrance last longer, I heard that it will be stronger!

8. Anti-wear analgesic ointment

Whether it is bitten by insects or slightly scratched, you can use lip balm to reduce inflammation ~ apply lip balm to the wound to achieve the anti-inflammatory and swelling effects.

What should I do if the newly purchased high-heeled shoes do not fit? Don't worry, take your lip balm from the bag and apply unused lip balm to the heel or pinch! It can not only reduce the friction between the foot skin and shoes but also play a role in reducing swelling.

9. Metal lubricant

The lubricating effect of lip balm is also not to be underestimated. The stuck zippers and rings that can't be taken off can help the lip balm, and instantly feel that the lip balm is a universal balm!

10. Glue Eliminator

The food and skincare products bought back, it is too uncomfortable to stick the hand with the remaining glue after tearing off the label! It won't rub off after hard rubbing, why not try a versatile lip balm again! The sticky texture of the lip balm helps to absorb the glue residue, then wipe it with a damp cloth, and it will come down soon!

The above information is provided by a card body spray supplier.


 
Slika od Michael Zhu
od Michael Zhu - sobota, 20. junij 2020, 10:44
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Jun. 10, 2020

Many girls buy a lot of lip balm as soon as winter comes, sometimes because they are not satisfied with the taste or use it in the spring and they plan to throw it away, so wasteful! In fact, you can use it in various ways. In addition to protecting lips, lip balm can also use its oily ingredients for first aid.

1. Makeup Remover First Aid Remover

Go out outside to discover eyeliner, eye shadow to be about to dizzy, very embarrassed! But again did not take discharge makeup product to go out, rubbing with a paper towel will not only have any effect but will also hurt the tender skin around the eyes!

At this time, you only need to take out the lip balm, apply a thin layer on the smudged position, and then gently wipe it with a damp paper towel to instantly clean it, the effect is not worse than the makeup remover!

Lip Balm

2. Anti-off makeup plastic eyebrow shape

Apply a thin layer of lip balm before painting the eyebrows. When drawing the eyebrows, the eyebrows are not easily messy and look more stylish. At the same time, it can also prevent the eyebrow powder from easily taking off makeup, killing two birds with one stone.

If you want to make light eyebrow makeup, you are worried that your own eyebrows are too thick, you can also use lip balm to fix the eyebrow and then use the foundation to cover to reduce the eyebrow color, the effect is definitely much better than directly applying the foundation to cover.

3. Barbed finger edge oil

Many people will find that the finger has grown thorns for no reason, or after washing the hands, it feels that the edges of the nails are particularly dry, even after using the hand cream, it still feels not enough! At this time, lip balm can play the role of finger oil!

Apply a circle of lip balm to the edges of dry nails, massage in circles to absorb it, you will find that the thorns are smoothed out easily.

4. Lighten the dry moisturizing cream

Lip balm is also a portable moisturizer. When you go out, if you notice dry lines around your eyes, you can apply lip balm to dilute it, but pay attention to the amount. If you use too much, it is easy to pop up fat particles, which is counterproductive!

Of course, in addition to the crow's feet of the eyes, the nasolabial folds can also be slowly erased with lip balm! And long-term adherence can not only improve the dryness of the face, but also improve the dryness and fine lines of the face for a long time!

The above information is provided by the lip balm supplier.



 
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High-Quality AC Swivel Adapter, Light Socket, for Single Lamp YL101
 
Overview
Model No.: YL101 Brand: YYPHOTOSTU... Place of Origin: China
Packing: Neutral Packing or... Payment Terms: TT 30% deposit, ba...
Specifications
 
swivel light socket

 
High-Quality AC Swivel Adapter, Light Socket, for Single Lamp YL101
 
Model No.: YL101
 
* Mounts on any standard light stand
 
* Holds any bulb with a standard E27 base
 
* Maximum capacity is 85 watts
 
* Easy to mount an umbrella in the adapter
 
Studio Lightings, AC Swivel AdapterDouble Head AC Light Socket High Quality

 
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The meaning of sun protection proprietary index

When you buy back a bottle of sunscreen, you can definitely see various indexes on the packaging. What is the real meaning of these common indexes?

UVA long-wave ultraviolet, it is the main reason for premature skin aging. It can penetrate the dermis layer, make the skin tan, even skin cancer, the effect is slow and long-lasting, and it is cumulative. Not blocked by windows, umbrellas, etc., even if it rains on a cloudy day.

UVB is a medium-wave ultraviolet, which can reach the dermis and cause sunburn. It causes skin peeling, erythema, sunburn, etc., but it can be blocked by glass, umbrellas, clothes, etc.

PA is an index that indicates how much UVA damage is prevented. At present, the standards adopted by sunscreen products on the market can be divided into three types: PA+ (effective), PA++ (very effective), and PA+++ (very effective). Products that are not marked with PA may not have UVA protection.

SPF mainly refers to the degree of protection against UVB. For Asians, the general skin will appear to be red in 15 minutes in the sun. SPF10 means that using this product can isolate ultraviolet rays for 15 minutes×10 times = 150 minutes, and so on.

Sunscreen is divided into physical sunscreen and chemical sunscreen

Sunscreen

What is the physical sunscreen?

The principle of a physical sunscreen is that reflective particles form a protective wall on the skin and reflect ultraviolet rays. The most commonly used ingredients are inorganic substances such as titanium dioxide and zinc oxide. Both zinc oxide and titanium oxide can provide UVB protection, and zinc oxide can block UVA. Typical physical sunscreen ingredients are white, pasty, not easy to wipe evenly and turn blue after exposure to water. This type of sunscreen does not contain too many chemical ingredients, so it is more suitable for babies.

What is chemical sunscreen?

The principle of chemical sunscreen is to use chemicals to combine with cells and absorb part of the ultraviolet rays to convert them into molecular vibration energy or heat energy to achieve the effect of sun protection. It is generally believed that physical sunscreen is less irritating to the skin and safer, but it feels thicker to use. The chemical sunscreen needs 20 minutes to absorb after application, but the texture is refreshing and not greasy.

Bring treasure to wear red clothes for more sun protection in summer

Mom should pay attention to it, the most sunscreen color is not white, but red. Because the red light wave is the longest, it can absorb a lot of ultraviolet rays in sunlight, and other colors are relatively weak, so the babywearing red clothes in summer can block ultraviolet rays and prevent sunburn.

It is best for babies to choose a sunscreen with at least SPF30

Although it is enough to choose SPF15 products for daily outings, you neglect one point: only when you apply the wipes strictly according to the time interval (usually 2 hours), it can guarantee the effect of SPF15. The vast majority of parents are difficult to make up for the baby, so the effect of SPF15 is actually only equivalent to SPF6 or 7. Therefore, if you choose SPF30, according to this condition, its actual effect is equivalent to SPF15.

The above information is provided by the sunscreen cream supplier.