hardware parts

What is elbow pipe fitting The elbow is used to change the direction of the pipe. The bending angles of commonly used elbow pipe fitting are 90°, 45° and 180°. The 180° elbow is also called U-shaped elbow. There are also special angle elbow pipe fitting , but there are very few elbow pipe fitting. The types of elbow pipe fitting are as follows: 1. Malleable steel elbow Malleable iron elbow, also known as malleable cast iron elbow, is the most common threaded elbow. The specifications of malleable steel elbow pipe fitting are relatively small, and the commonly used specifications range from 1/2 to 4 inches. According to their different surface treatments, they are divided into galvanized and non-galvanized. This kind of malleable steel pipe fittings are mainly used for heating, water pipes and gas pipes. In the process, except for the low-pressure pipeline that needs to be frequently disassembled, other material pipelines are rarely used. 2. Pressed elbow Pressed elbow pipe fitting, als

Pipe fitting is a part that combine pipes into pipelines. Pipe fittings are used in water conservancy, irrigation and drainage fields. According to the connection method, it can be divided into four types: socket pipe fittings, threaded pipe fittings, flange pipe fittings and welded pipe fittings, which are usually made of the same material as the pipe. In addition to the classification according to the access method, there are also other classifications. Now let's look for the types of pipe fittings. Specific classification of pipe fittings: Pipe fittings include elbows (elbows), flanges, three-way pipes, four-way pipes (cross heads) and reducers (small and small heads). The elbow is used as the turning position of the pipe; the flange is used as a part to connect the pipe to the pipe and is connected to the pipe end; the three-way pipe is used as the location where the three pipes converge; the four-way pipe is used as the location where the four pipes converge; The reducer is u

The tee is the pipe fitting that connects the main pipeline and the branch pipeline. According to the different manufacturing materials and uses, the  tee pipe fitting can be divided into many types. Divided from the specification: It can be divided into same diameter tee and different diameter tee. Same diameter tee is also called equal diameter tee; The same diameter tee means that the diameter of the branch pipe is the same as that of the main pipe. Reducing tee means that the diameter of the branch pipe is smaller than the pipe diameter of the main pipe, so it is also called unequal diameter tee, and the quantity of the reducing tee is more. Malleable Iron tee pipe fitting The manufacturing materials and specifications of malleable steel tees are the same as malleable steel elbows. They are not used much in petrochemical process pipelines. They are mainly used for indoor heating, water supply and gas pipelines. Steel tee pipe fitting The production of shaped tees is made of high-qu

The pump shaft seal ing tool is very important because it avoids leaks that may damage the pump. Pump shaft seals are made for every imaginable machine part that contains any type of rotating part. The seal is necessary for sealing fluid, grease, oil mist or any other lubricant. Pump seals have been widely used. These applications range from water trucks to recycling stations and household washing machines. These machines rely heavily on this type of seal on many parts. Therefore, it can fit any shaft size. Speaking of popularity, the pump seal column will win. This is because many applications are partially implemented because they cause few leaks and require little maintenance. Power suction devices also tend to use more pump seals because of their low power consumption. Due to little overflow, the seal on the pump shaft is almost discontinuous, saving time and effort. Another importance of sealing with pump shaft seals is its durability. These seals are characterized by a long se

What is hypochlorous acid? Using tap water as raw material, adding a small amount of salt, the liquid produced after electrolysis is hypochlorous acid solution. The molecular formula is: HCLO. Hypochlorous acid sterilization principle Hypochlorous acid has a strong oxidizing power, which can oxidize and decompose amino acids in the enzyme proteins of microorganisms and lose their activity, leading to metabolic dysfunction and death. Since most pathogens (bacteria, fungi (including mold), viruses) are prokaryotic organisms, their enzyme systems are mostly distributed on the surface of cell membranes, which are vulnerable to attack by hypochlorous acid and lose their activity. Characteristics of hypochlorous acid disinfectant Different from other disinfectant products, hypochlorous acid disinfectant is sterilized by physical methods (its oxidation feature has the ability to take away electrons from the nucleus of bacteria, viruses, etc., so that bacteria and virus cells lose their activi

Silver streaks are mainly caused by incomplete drying of the raw materials and caused by moisture or volatile components (mainly interference from water vapor, decomposition gas, solvent gas, and air). When silver filaments are produced, firstly use thoroughly dried pellets for forming experiments. If this cannot be eliminated, check for other reasons. Next, we will analyze the plastic injection molding defect silver wire problem from four aspects. The specific reasons for silver wire are as follows: 1. Injection molding machine: (1) The barrel and screw are worn out, or there are dead ends of material flow in the rubber head and rubber ring, which will be decomposed by long-term heating. (2) The heating system is out of control, causing the temperature to be too high and decomposing. Check whether there are problems with the heating elements such as thermocouples and heating coils. Improper screw design can cause improper exhaust or easily bring in air. 2. Mold: (1) Poor exhaust; (2)

Fused deposition process Filament material selective cladding (Fused Deposition Modeling) rapid prototyping process is a molding method that does not rely on laser as a molding energy, but heats and melts various wires, referred to as FDM. The principle of selective cladding of filamentary materials is that the heating nozzle moves in the X-Y plane according to the cross-sectional profile information of the product parts under the control of the computer. Thermoplastic filament materials (such as plastic filament with a diameter of 1.78mm) are sent to the nozzle by the wire feeding mechanism, and are heated and melted into a semi-liquid state in the nozzle, and then squeezed out and selectively coated on the workbench. After rapid cooling, a flake contour is formed. After one layer of cross-section is formed, the worktable is lowered to a certain height, and then the next layer is cladding, as if the cross-section outline is "drawn" layer by layer, and the cycle is like this

Generally speaking, when the baby is eight months old, he will crawl and sit firmly. At this time, we should let the baby learn to urinate on the toilet and let him develop a good habit. Next, I will explain the advantages and disadvantages of the following kids potty pot . Disadvantages of some kids potty pot: (1) Cartoon style, riding style, it will not be easy to wear tight-fitting pants in the future; (2) Too much like a toy, it is easy to distract the baby, and will not poop with heart! Or develop a bad habit of playing while pooping; (3) Without back and armrests, children will fall down if they are not paying attention; (4) Be sure to choose the separable design of the inner container, otherwise it is not convenient to pour stool; The benefits of some toilets: (1) Economical and affordable, simple installation, strong labor stability; (2) Reliable material, skin-friendly and comfortable; (3) Streamlined structure, multiple anti-skid; (4) Comfortable and safe, easy to clean if ac

Hypochlorous acid water can be used in medical and health institutions, various public places, food processing, households and other occasions. The objects of disinfection include: endoscopes, surgical instruments; sores/wounds, skin and mucous membranes; air, hands, surfaces and fabrics, fruits and vegetables, tableware, and disinfection of secondary water supply equipment and facilities. At room temperature, available chlorine hypochlorous acid water can kill microorganisms and inactivate influenza virus and norovirus within 15 seconds The sterilization process of hypochlorous acid is to destroy bacteria and other microorganisms through oxidation, and its main components are hypochlorous acid and purified water. Hypochlorous acid has the same function as the human body, so it is not harmful and non-toxic. As early as the 1980s, Japan had widely used slightly acidic hypochlorous acid water for epidemic prevention in public places, and it was very effective in killing viruses quickly.

An eight-month-old baby is about to learn to go to the bathroom by himself. Ordinary household toilets are too large and tall for babies, which can easily make them fearful, and at the same time make them very difficult to use. Coupled with the large inner circle of the adult toilet, the baby's butt can easily fall and get stuck in it, which is very unsafe. Kids potty pot  is introduced according to the baby's body, and are commonly divided into five types: straddle toilets, toddler toilet cushions, ladder toilets, chair-back toilets, and multi-purpose combined toilets. The children's toilet can train the baby to go to the toilet by himself, help the baby gradually adapt to the transition from using diapers to using the toilet, and also make the baby more comfortable and safe to go to the toilet. When the toilet is first used, even if the baby does not have a real bowel movement, parents should insist on letting the baby sit on it for a while, so as to develop the habit as

1. Air disinfection: After being diluted according to a ratio of 1:5, spraying indoors with an atomized spray can can kill bacteria. 2. Floor disinfection: directly spray the ground with hypochlorous acid disinfectant stock solution or when mopping the floor, soak the mop with hypochlorous acid disinfectant and wipe the floor 3. Disinfection of tableware, toys, etc.: After diluting at a ratio of 1:5, soak the tableware or toys for more than 3 minutes 4. Wash your hands: Wash your hands after diluted 1:5, which can effectively kill bacteria 5. Disinfect fruits and vegetables to remove pesticide residues: Use hypochlorous acid disinfectant stock solution to soak fruits and vegetables (rinse with water after soaking), which can not only kill bacteria, but also remove pesticide residues. 6. Sterilization of meat and fish: After soaking meat and fish in hypochlorous acid disinfectant, it can not only kill bacteria, but also make the meat and fish taste more delicious. ` 7. Other methods of