First, look at the length, the price, the length of the regular product per roll is 100 (+-5) meters, rather than the length of the regular product 60-80 meters, some manufacturers make the E insulation skin thick, making the insider difficult to see If there is a problem, you can generally count the number of turns of the wire, and then multiply the radius of the whole roll to roughly calculate the length;
2. Whether there is a “Great Wall Mark†and a production license number of the China Electrotechnical Products Certification Committee on the wire packaging of the roll;
Look at the outer plastic skin of the wire is bright and fine, and there should be no open flame when ignited with a lighter. Non-regular products use recycled plastics, with a dull color and loose texture, which can ignite open flames;
Third, the regular product wire uses fine red copper, the outer layer is bright and slightly soft, the informal product copper is black and hard, is a recycled copper, high resistivity, poor conductivity, will heat up and not safe.
Identification of advantages and disadvantages One must look at: see if there is a quality system certification; see whether the certificate is standardized; see if there is a factory name, site, inspection chapter, production date; see whether the trademark is printed on the wire, specifications, voltage and so on. Also look at the cross section of the copper core of the wire, the superior color of the copper color is bright, the color is soft, otherwise it is a defective product.
Second, try: You can take a wire head repeatedly and bend it by hand. Anything that is soft to the touch, good in fatigue resistance, flexible in plastic or rubber, and crack-free on the wire insulation is a superior product. Http://news.chinawj.com.cn
Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
We can produce the Boiler Pipe accordng to the EN10216 standard, such as the 10CrMo5-5 steel pipe, 10CrMo9-10 steel pipe, 13CrMo4-5 steel pipe, 15NiCuMoNb5-6-4 steel pipe, X10CrMoVNb9-1 steel pipe and X10CrWMoVNb9-2 steel pipe. Yangzhou Chengde have been sold about 700000 MT boiler pipe to the world in recent 10 years and we share the 70% of export boiler pipe in china.
At Chengde, we take quality seriously. This philosophy carries through every aspect of our operation. That is why we maintain a fully documented/fully certified Quality Management System which complies with the requirements of ISO 9001. This quality system encompasses every phase of our business. Chengde has established its complete quality system as per ISO 9001 since 2006 and upgrade to ISO9001 :2008 at a later stage.
Our commitment to the highest industry standards in customer satisfaction remains our primary purpose with an emphasis on continual improvement in both production quality and support service. Chengde rises above the competition in delivering to you a quality/fully certified product on schedule.In the year of 2015, we win the first prize of National Science and Technology Progress Award by the program of [The innovative research & development, and application of steel pipes used in 600 ℃ Ultra-super critical coal power generation unit".
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