Carbon steel seamless elbow
Carbon steel seamless elbow as an indispensable part of our lives, it needs to be regularly maintained, then we will analyze what carbon steel seamless elbow needs to pay attention to, what aspects can not be touched, let's take a look at it
Improve the corrosion resistance of carbon steel seamless elbows in reducing substances, especially the small half of them, improve the high temperature physical properties of austenitic stainless steel pipe fittings, and improve the compressive strength and quenching reliability of carbon steel elbows. It improves the reliability of the passivation film and makes the stainless steel material have faster corrosion resistance
Carbon steel seamless elbow away from water causes
CO2 is a precipitate in water and exists in a free state under normal conditions. A large amount of bicarbonate in water also exists as free CO2 under low pH conditions, so the average phenomenon of carbonic acid occurs
The more CO2 in the water, the more H+ is converted into, the lower the pH value of the water, the acidic corrosion of the water, the damage to the protective film generated on the surface of carbon steel, resulting in carbon steel corrosion, carbon dissolved into the storage tank countermeasures, such as using nitrogen or other inert gases to protect the top area of the storage tank, to avoid CO2 pollution of pure water bodies.
CO2 is a common chemical in the air. CO2 reacts with oxygen to form the molecular formula for CO2. At room temperatures, it is odorless and gaseous, with a higher relative density than air. It dissolves in water, reacts with water and turns it into carbonic acid.
It cannot be burned. The contraction of solid CO2 is often referred to as dry ice. CO2 is not considered to be a major contributor to the greenhouse effect.
Technical requirements for elbows
Since most pipe fittings are used for welding. In order to improve the welding quality of the elbow, the end will be slotted, leaving only a certain Angle and a certain edge, this requirement is also more strict, the thickness, Angle and deviation range have been specified; The surface quality and mechanical properties are basically the same as those of pipes. In order to facilitate welding, the pipe is the same steel as the connecting pipe.
Any pipe fittings, including elbows, must be surface treated. The inner and outer surface oxide is sprayed by shot peening and then coated with anti-corrosion paint, which also prevents corrosion and oxidation, this work is essential!
Understand the packing requirements for the quantity and weight of elbows. Since the size of ordinary elbow can also be, according to the specific requirements of customers to produce the corresponding elbow size can also be.
Although the size of the elbows varies, they all need to be packed in wooden boxes, and if the number of elbows is large, the total weight of the elbows should usually not exceed 1 ton. Large elbows must be individually packaged, so packaging factors must also be considered when producing and processing elbows.
After the inspection of elbow production and processing, it is necessary to make a mark, that is, to indicate the size of the elbow, steel number, batch number, manufacturer's trademark, etc., on the elbow box for transportation and customer inspection.
