Pipe specimen length (500 ± 50) mm, the specimen is placed in the following order of 24 h at each temperature condition: (50 ± 2) ℃; (-10 ± 2) ℃; (50 ± 2) ℃; (-10 ± 2) ℃; (50 ± 2) ℃; (-10 ± 2) ℃. After the test specimen is placed in a temperature of (20 ± 5) environment ℃ in 24 h hot dip steel pipe manufacturer, check the coating inside the case, in accordance with the provisions of 6.4 were hot dip steel adhesion test, the test results should be consistent The provisions of 5.14. Construction, installation points 1), should be "building water supply plastic composite pipeline engineering technical specification" CECS125: 2001 execution. 2), plastic pipe should be used in the following construction equipment: (1) should be used to cut metal sawing; (2) the pressure tank should be dedicated roller slot machines; (3) bend bender should be used cold-formed; (4) wire sets should be used electric threading machine for pipe threading; (5) plastic pipe deburring and processing park port angle should be used rasp processing; (6) coated high strength epoxy coating liquid organic solvents should be used a small brush or small toothbrush. 3), coated steel construction program should meet the following requirements: (1) plastic pipe should not be buried in the reinforced concrete structure layer; (2) the prohibition of plastic pipe welding pipe installation; (3) plastic pipe pipeline installation should From the large diameter gradually connected to a small-caliber, the nozzle should be blocked; (4) plastic pipe in the transportation, handling and site construction hot dip steel prices, non tossing and dramatic impact; (5) plastic pipe During installation, when the diameter of not more than DN50 available bender cold-formed, but the bending radius of curvature of not less than 8 times the diameter, the bending angle not greater than 10 °. Hebei hot dip steel, hot dip steel Liaoyuan, Wang Xiong Xiong Wang Thai by Thai Plastic Products Factory. Xiong Wang Thai Plastic Products Factory (www.wangtai668.com) strong, credible, in Baoding UPVC pipe industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Taihe Wang Xiong you hand into the brilliant, for a better future!