管道压力规定
Piping pressure regulations
(1)PVC给水管道所示的压力均表示为公称压力，用Mpa表示，1Mpa≈10kgf/cm2即管材在20℃条件下，输送介质的工作压力。但随着介质的温度的升高(不得输送>50℃的介质)工作压力随之减小，这从客观上在选择给水管道须考虑足够的压力的安全系数
(1) The pressure indicated in PVC water supply pipeline is expressed as nominal pressure, expressed in MPa, and 1MPa ≈ 10kgf / cm2, that is, the working pressure of conveying medium under the condition of 20 ℃. However, with the increase of the temperature of the medium (the medium > 50 ℃ should not be transported), the working pressure will decrease
(2)给水管材的公称压力规定为：0.6Mpa、0.8Mpa、1.0Mpa、1.25Mpa、1.6Mpa等5种。
(2) The nominal pressure of water supply pipe material is 0.6MPa, 0.8MPa, 1.0MPa, 1.25mpa and 1.6Mpa.
(3)同等规格管材的公称压力的大小一般以管材的壁厚来划分。
(3) The nominal pressure of the same specification pipe is generally divided by the wall thickness of the pipe.
(4)每个压力区的最小口径的管材规定为：0.6Mpa管材的最小口径为63mm，0.8Mpa管材的最小口径为50mm，1.0Mpa管材的最小口径为40mm，1.25Mpa管材的最小口径为32mm，1.6Mpa管材的最小口径为20mm和25mm。
(4) The minimum diameter of pipes in each pressure zone is specified as follows: the minimum diameter of 0.6MPa pipe is 63mm, the minimum diameter of 0.8MPa pipe is 50mm, the minimum diameter of 1.0MPa pipe is 40mm, the minimum diameter of 1.25mpa pipe is 32mm, and the minimum diameter of 1.6Mpa pipe is 20mm and 25mm.
(5)给水管材的公称压力一般为1.6Mpa，且与各种压力的管材相配套。
(5) The nominal pressure of water supply pipe is generally 1.6Mpa, which is matched with various pressure pipes.