Pvc wire tube 4 points and 6 points What is the difference between the general home improvement what
Different diameter. 4 tube is the diameter of 16 lines, 6 tube is the diameter of 20 lines. Both will be used, the specific use of what kind of use to see the occasion. Common PVC threading tube are: ........110. Features: . the pipe surface hardness and tensile strength is excellent, high pipeline safety factor. . anti-aging is good, the normal life of up to 50 years. . the pipeline on the inorganic acid, alkali, salt corrosion resistance, suitable for industrial wastewater discharge and transportation. . the pipeline friction coefficient is small, smooth water, not easy to plug, less maintenance work. . high oxygen index material, is a B2 fire-resistant materials, with self-extinguishing. . the pipeline linear expansion coefficient is small, 0.07mm / m.0c, by the temperature impact deformation is small. Thermal conductivity and elastic modulus is small, compared with cast iron drainage anti-freeze performance. . pipe, pipe fittings can be used to connect, simple construction method, easy to operate, the installation of high efficiency.
Wang Zhaoan's power electronics foundation is just like a graduate student to learn this book, I am now looking at
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If the battery is not charging, the circuit will burn to the table box, because the wire will burn off after the insulation will short-circuit, short-circuit current gradually increased to the air switch (insurance) off so far. Ride electric car electrician