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First, stainless steel is generally divided into chromium stainless steel and nickel stainless steel (only one of a variety of categories), usually we use the method of magnetic inspection of stainless steel is only applied to a part of stainless steel, in fact, two more or less are all magnetic, but Is chromium-containing stainless steel magnetic stronger than nickel-containing stainless steel, plain white you can use magnets to attract chromium-containing stainless steel, on the nickel-containing stainless steel to attract very weak. If only for nickel-containing stainless steel is of course magnetic the weaker the more nickel. This method It is also the simplest and most commonly used method.
Second, the use of stainless steel test solution to identify stainless steel test solution, also known as stainless steel syrup, as long as a little drop in the stainless steel, the syrup immediately and stainless steel chemical reaction, through the reaction of different colors, can clearly determine the type of stainless steel.
Third, through the identification of metal instruments.
Fourth, the spark identification method: mainly used in steel, under the grinding wheel grinding due to friction, high temperature effects, various elements, particles generated when the oxidation of the number of sparks, shape, bifurcation, color, etc., to identify the chemical composition of the material (composition Elemental) and approximate content of a method. The content of nickel is also best 8.0% to 11.0%. The nickel content is of course, but other elements such as carbon, chromium, manganese, sulfur content is also very important, but also should pay more attention!!
High temperature resistant, CPVC pipe is 15℃ more resistant to heat than UPVC pipes, can keep shape and intensity under temperature 93℃.
Excellent electric insulation, can resist 30kv voltage, assuring a safe system.
Compression resistance, the ring stiffness can reach 10kpa.
High impact strength, can resist 1 kg heavy punch from 2m high under temperature 0℃.
Flame retardant, self-extinguishing when leave fire.
Easy construction. light weight, easy to transport, handle and construct. Using spigot and socket joint of elastic sealing rubber rings, can avoid the leakage of underground water and protect electrical cable.
Long service life, PVC-C electrical pipe is corrosion resistant, anti-aging, service life can be up to 50 years.
The main application
â—Ž urban and rural trench less directional drilling power pipeline project, and open the excavation of power pipe project
â—Ž urban and rural trench less horizontal drilling into the sewage discharge pipe project
â—Ž municipal, telecommunications, electricity, gas, water, heat and other pipeline projects
Main Application:
1. Hard CPVC pipe can be used in urban power grid construction and transformation;
2. Municipal Improvement Project;
3. Civil Aviation Airport construction Project;
4. Industry Zone and Residential area construction;
5. Transportation engineering construction;
6. Lamp cables' installation;
7. as protective pipe network, in Telecommunication and cable TV signal area.
The power pipe has excellent electrical insulation.
â—Ž power pipe has a high thermal deformation temperature and low temperature impact performance.
â—Ž power tube tensile, compression performance higher than HDPE.
â—Ž power pipe light, smooth, friction main small, hot melt welding docking.
◎ power pipe long-term use of a temperature of 5 ~ 70 ℃.
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