When you buy stainless steel door takes note of the first to check if the door to buy a refurbished old Chongqing KTV avoiding a trap door that, in the street a few shops selling security doors will recycle some of the old security doors, then refurbished then sell. To verify that the door is not a refurbished old can watch turnkey process. Under normal circumstances, the new security door packaging is intact, installers face in front of the customer's package, the key should be in the package inside, key packaging should be complete stainless steel screens decorative flowers, to be installed in front of the customer's face cylinder, installed after the locked steel door, then the key to the customer. But if the door of the packaging itself is damaged, but the key installed in the pockets of workers, there may be refurbished door. Second, the check is not made of paper security door security door made of paper little people staggering, and some surface with steel security door, but the sandwich filler is filled into the paper. There are dealers, the state could have been made of paper filler, but this must be a paper honeycomb paper. But now the market does have some manufacturers do this with an ordinary cardboard filler. Although the use of honeycomb paper is possible, but it is generally only used low-grade door, because it does not soundproof insulation. Fairly standard filler is blowing agents, can heat, noise, fire performance disadvantage is worse, but you can achieve security. Slag wool is a little better. Machining of stainless steel pipe Chongqing Note the use of various types of properties and applications of Chongqing stainless steel tube. Balancing off before making stainless steel shaped products must search check whether all the retaining screws and tighten. Stainless steel tube station that the carbon content of these steels if less than 0.03% or containing ti, ni, can significantly improve its resistance to intergranular corrosion between. In addition, the point was a good time to be strict control within 5 seconds is not the color that is 4 or more material, more than five seconds will slow even four variants use four pink style: a drop of liquid in the test material identification, wait a few seconds display end. 4, make false prototype that is now within seconds. * With tare, pre-tare, auto-tare setting function. Maintaining accurate, tone, stainless steel pipe making Chongqing safe and reliable operation of fans, mainly to ensure the progress of the fan life. Such steel is generally not contain nickel, sometimes also contain a small amount of mo, ti, nb wait elements such steel with large thermal conductivity, thermal expansion coefficient, good oxidation resistance, excellent resistance to stress corrosion, etc., used for manufacture of corrosion large gas, steam, water and oxidizing acid corrosion of components. In the early days of the impeller operation and regular examination of all of the time, as long as one has the opportunity, you must check the impeller is showing cracks, wear, dust and other defects. Chromium content of 11% to 30% in stainless steel, with a body-centered cubic crystal structure. Cr steel containing about 18%, ni 8% ~ 10%, when c about 0.1%, has a constant austenite. Droplets in seconds, causing pink. Because of impellers have been dissatisfied with the status value for a period of time to run, these bolts may have loosened. Stainless steel hotel door, Arts Yiu stainless steel (certified), stainless steel supplied by Yao Yi Stainless Steel Products Co., Ltd., Chongqing. Stainless Steel Products Co., Ltd. Chongqing Yi Yao (www.shudumy.com) is Chongqing Municipality, stainless steel and products of leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Yao Yi leader in stainless steel with the staff warmly welcome all inquiries to discuss and create art Yiu stainless steel a better future.