1. The raw material of PPR is milky yellow! The white water pipe that can be processed cannot be the kind of milk white color! If the water pipe shows the color of milk white, it proves that the merchant has two possibilities: (1) Adding plastic components to it. (2) Add chemical materials to the inside - calcium carbonate! Both of these ingredients hurt the body! The color of a good hose should also be milky yellow and very light. →Related reading: How to choose a water pipe in a hidden project
2. The surface and inner wall of the water pipe are smooth without bubbles.
3, a good water pipe is no air bubbles, how to see whether there are bubbles in the water pipe, do not look at their sample tubes, you can go directly to the B & H home to see that a scientific name is called {curved bridge}, soil called (bending) The accessories, look at the end of the hose, you will understand! →Related reading: What are the types of water pipes?
4, wall thickness is very important, the home is generally D25 * 4.2, wall thickness is 4.2, a good water pipe is relatively thick, there are many manufacturers cut corners, reduce the wall thickness so that the wall thickness is only 4.0! These are the brands of waste brands that can rule out most of what is currently imported in the market.
5. Regardless of what imported products are produced in the country, the key is whether domestically produced machines are imported. So buying things to see the brand does not work, but also to see the quality of products!
Water pipe purchase hydropower renovation hidden project
Our connector for 4-2 bundle conductors----JTL-2/4-300/40-900K, four leads and another two leads could be ordered according to the customers practical demand, the consumer should give clear indication of the lead kind. Splicing fittings are used for splicing or repairing conductor and ground wire of overhead transmission lines. The splices may be compression type, bolt type performed armour rods in accordance with the construction and mounting way. The compressive splices have hydraulic, explosive and notched type. The DC resistance of all splices must be less thank that of the equi-length conductor, the temperature rise of all aplices must be less thank that of the aplicing conductor. The slip strength of the compressive sleeve must be not less than 95% of the rated strength of conductor.
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Connector For 4-2 Bundle Conductor
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