304 stainless steel grooved pipe fitting is convenient because of its connection, high safety factor in the construction process and growing demand for grooved pipe fittings. The market now has high-quality pipe fittings. When selecting pipe fittings, you can use the "knock 2 to see three phase modulation" rapid identification method to identify good and bad pipe fittings
Knock is to check the toughness of casting pipe fittings. When the outer wall of the pipe is hit by strong force, the surface of the pipe will produce slight concave convex deformation, but will not break, indicating that the pipe has good toughness and performance.
Look at the length of the line and galvanizing. Generally, the threads of the pipes with poor quality are short and the fittings are good, so as to prevent the decaying pipes from having a good surface galvanizing layer. Before galvanizing and heating galvanizing, the threads are treated. After the first thread is treated after galvanizing, the fittings are replaced with other coatings. Therefore, the cost is low, but the anticorrosion effect is not good. The pipes will rust after installation, which will affect the quality of water.
The weight of three phase modulation refers to the point pipe fittings. The inferior fittings usually cut corners, have small pipe diameter, and the length and size of the pipe wall thickness can be changed. The inferior fittings are usually 10% lighter than the international standard fittings. One hand is good, so you can try the weight of the pipe to determine the quality of the pipe fittings.
Groove accessories can be used for circulating cooling water system
At present, stainless steel grooved pipe fittings are widely used, such as water supply and drainage pipes, fire protection systems, petrochemical and many other pipeline connection projects. The circulating cooling water system has a very high requirement for pipeline connection. The water temperature of circulating cooling water is 30-40 ℃, and the water flow is large. Unstable installation of circulating cooling water system. The utility model has the advantages of convenient installation, corrosion resistance, water pressure resistance, etc. Grooved fittings have been proven in air conditioning systems. All channel fittings can be used in the circulating cooling water system.