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为了保证煤气管道通气后不漏气,在施工中应对管道进行强度试验和严密性试验。强度试验:煤气管道的强度试验,不是检验管子和管道焊缝的强度,而是检查管道焊缝是否漏气。强度试验采用弹簧压力表观测,按规定钢管道强度试验的压力,低压和中压管为3公斤/平方厘米,高压管为4.5公斤/平方厘米,试验在沟槽上先分段作,以减少槽内固定口焊接,便于防腐,分段试验合格包好绝缘防腐层后,下入槽内,分段连接,
In order to ensure that gas pipelines do not leak after venting, pipelines shall be subjected to strength tests and stringency tests during construction. Strength test: The strength test of the gas pipeline is not to check the strength of the pipe and pipe welds, but to check whether the pipe welds leak. The strength test adopts the spring pressure gauge to observe, according to the pressure of the specified steel pipeline strength test, the low pressure and medium pressure tube is 3 kg/cm2, and the high pressure tube is 4.5 kg/cm2. The test is firstly performed on the trench to reduce In-tank fixed port welding is convenient for anti-corrosion. After the sub-section test is properly wrapped in the insulation coating, it is inserted into the tank and connected in sections.