There is no operating principle for the rainwater grid. It's just a filtering and interception function. The grid retains some of the larger dirt carried by rainwater, such as plastic bags, paper shells, food waste, etc. advantages and disadvantages. Trapping dirt can prevent pollutants from entering and depositing pipes, while reducing flow capacity. Once the plastic stool seals the grate, it may cause problems such as water accumulation, so maintenance is required.
What to cover with a water grate rain?
Wooden grills are preferable.
About combs:
Combusts of different materials have different functions, and combs with different appearance also have different functions. For example, there are different combs for straight hair and straight hair.curly ows. Additionally, combs are also different due to different functions, including massage combs, grills, etc.
But when choosing a comb, the material is the most important thing. Take a look at the combs currently on the market. They are mainly made of ox horn, sheep horn, boxwood, peach wood, resin, rosewood and plastic.
The most taboo thing in combing hair is static electricity, so when choosing a comb, you should pay attention to choosing materials that can prevent static electricity. Horn, boxwood and resin combs have very good antistatic properties. effects, and they have smooth touch and rounded teeth, beautiful and fashionable in appearance, and although the price is relatively high, it is still very popular.
Patterns on combs are becoming more and more rich and sophisticated, especially on combsin wood. The designs range from landscapes to flowers and birds, and some are even linked to constellations and zodiac signs. Boar bristles are considered the best and softest hair comb material because they do not generate static electricity and the hair appears particularly shiny. Regardless of your hairstyle type or hair quality, generally speaking, do not choose combs with too dense teeth, so as not to tire the hair when combing, and it is better to choose a comb with round teeth.
Main functions
1. During the hair combing process, by stimulating the "Baihui", "Sishencong" and "Shangxing" acupoints, blood flow can be increased. at the roots improves the activity of melanocytes and increases the number of melanocytes in the hair bulb, so that the "nutrition" of black hair can be replenishede.
2. There are many blood vessels, nerves, sebaceous glands, sweat glands, etc. distributed on the human scalp, not only can dandruff and grease be removed, but also when combing. the teeth are gently stroked back and forth across the head. It can stimulate nerve endings, regulate the nerves of the head through the cerebral cortex, relax the tense state of the head, promote blood circulation, and stimulate hair follicles and sebaceous glands. The sweat glands are well nourished.
3. As for the material of the comb, plastic is not suitable. Traditional Chinese medicine believes that wooden combs, especially jujube and boxwood combs, are best. For a more luxurious look, you can use an ox horn or jade comb, which is not only good for your hair, but also a guarantee for your health. For example, a horn combe of beef has beneficial effects on health. eliminate heat and eliminate internal heat, and often using a peach wood comb to comb your hair can ward off evil spirits, etc.
4. Keratin is a kind of traditional Chinese medicine, and the horn comb made of it is the best choice for caring for your hair. Combing your hair with an angle comb can remove dirt without sticking, relieve itching without pain, moisturize without hanging hair, and accelerate blood circulation in the scalp., can strengthen immunity, eliminate inflammation and cool blood , relieve pain and relieve itching, prevent static electricity, prevent hair loss, remove dandruff and protect hair, relax muscles and activate blood circulation, soothe nerves and brain, promote hair growth and other health care effects.
What is a cast iron grate?
You can refer to the price calculations of the corresponding sub-article of the municipal quota, and the cost of material is adjusted according to the market information price. If you set a quota, no one is suitable anymore, and the quota price is relatively low. The water grid has different specifications and needs to be processed in advance, so the price is relatively high.
The most appropriate thing is to add one yourself.
Municipal quotas can be applied:
Detailed information:
Rainwater grates can be made of flat steel and twisted square steel or flat steel and It is made of welded flat steel, and now it is also made of high strength plastic.
If there is no suitable subtitle for the installation of a rainwater grid, and there is a quota explanation in the province where you reside, refer to the explication of quota. If there is no explanation of the quota, you can borrow the sub-element of iron parts incorporated in the construction quota or the sub-element of production and installation of steel components.
The rainwater grid can be covered with grids and the cast iron siphon can be covered with iron parts.
In fact, the size of the rainwater grid is generally 20cm × 30cm, and the slope from the middle of the road is not certain, so generally when choosing 'a product, you have to look at the design drawings. and on-site conditions. The slope is generally around 2% to 3%! Select products based on these requirements.
There is no specific standard size for the application of rainwater grilles. Manufacturers produce them according to drawings and requirements. While some manufacturers have stock in stock, customers should choose according to their needs.real care. However, with the development of science and technology, resin or plastic is used as reinforcement with steel bars and inorganic fillers to form a new composite water grid. The advantage is that the weight is lighter than cast iron water grid and the cost is low. The disadvantage is that the resistance is not as high as that of the cast iron water grid.
Baidu Encyclopedia - Rainwater Grate
Cast iron grate is also a manhole cover, which is used to cover roads or deep wells at home to prevent people or objects from falling. . Tongzhou Liuhe Casting can be divided into metal manhole covers, high strength fiber cement concrete manhole covers, resin manhole covers, etc. depending on the materials.
Generally, the circular shape is used. Can be used in green belts, sidewalks, highways, docks, alleys, etc.