On the acoustic tube manufacturers is how to conduct product testing, flushing, 1, hydrostatic testing and acceptance of sterilization (1) The test pressure Binzhou Acoustic Pipe manufacturers Spot cold water pipe, the system should be 1.5 times the working pressure, but not less than 0.9pa. Test pressure (2) hot water pipes, should be 2.0 times the system working pressure, but not less than 1.2Mpa. (3) buried in the ground floor and the wall surface acoustic tube. Hydrostatic test must be carried out before pouring or blocking, can continue construction after pressure test. (4) hot melt acoustic tube connections, hydrostatic test should be in the acoustic tube connection 24h conduct. (5) The hydrostatic test shall meet the following requirements: ① hydrostatic test should be conducted segment, the total length of the test pipe should not exceed 500m; ② before testing, acoustic tube should be fixed. Connector Ming Lu, and may not be connected to the water distribution equipment; ③ pressure gauge installed in the lowest section of the test tube, the pressure accuracy of 0.01MPa; ④ slowly into the acoustic tube filled with water from the lowest point of the pipe section, fully exclude air acoustic tube, watertight checks. ⑤ of acoustic tube slowly boost, boost is appropriate hand pumps, booster time is not less than 10min; ⑥ After the test pressure to the required boost regulator 1h, the pressure drop shall not exceed 0.06MPa; ⑦ pressure at work 1.15 times the state regulator 2h, the pressure drop must not exceed 0.03MPa; ⑧ test. Each even Binzhou Acoustic Pipe factory stock pick at no leakage as qualified; Note: Allow two fill pressure within 30 minutes, rising to the specified test pressure. (6) After passing the test pressure, the tube end pieces with water turned on to design working pressure of the water pipe network, Binzhou acoustic tube manufacturers Spot will open simultaneously with the water element in batches, each with water, the water should be smooth point. After a sharp fluctuations in the last few weeks later, as the APEC meeting and other market information gradually return to rational speculation channel last week, both billet market and other raw materials, finished products or spot market prices are not big ups and downs, the domestic steel market to slightly fluctuations in the main market. But Lange Experts point out that the APEC meeting this week will be held in Beijing early developed discontinued, limited production and other security programs will be implemented, short-term resource constraints and ease the financial pressure early or will drive the steel spot market prices rose slightly. Last week, the domestic steel market as a whole showed up before or after the trend. Week early, about APEC meetings gradually return to rational speculation market information channel, but since the end of the business back to a time when money pressure, the market price of vulnerable Yindie based. However, with the October 30 Fed announced quantitative easing will end in November, up nearly six years of quantitative easing was finally coming to an end, but the central bank for the first time MLF directional drain, clear instructions directed to cut interest rates, making the stock market, City pulled clear. In addition, by stopping the construction site during the APEC meeting, the impact downstream users in advance procurement initiative to increase and accelerate the construction schedule, coupled with the stock market has been due to remain low, some of the resources are in short supply specifications, making businesses to raise prices will be enhanced in some areas some varieties of steel prices rose slightly.