Town gas indoor engineering
Refers to the internal gas engineering system for urban residents, commercial and industrial enterprises, including gas pipelines (including indoor gas pipelines and outdoor gas pipelines), gas appliances, gas equipment and facilities between the users' gas appliances and gas-using equipment. .
Pipe components
An element used to connect or device a pipe. It includes: pipes, fittings, flanges, gaskets, fasteners, valves, flexible joints, pressure hoses, pressure regulators and filters.
The state stipulates the implementation of production licenses, measuring instrument licenses or special certified products. The production unit must provide relevant certification documents. The construction unit must check the relevant documents before installation and use. Products that do not meet the requirements must not be installed and used.
The specifications and performance of the pipeline components, equipment and related materials used in gas indoor engineering shall comply with the relevant national standards and design documents, and shall have the factory qualified documents; the burning appliances, gas equipment and metering devices must be selected. Products that are qualified by the testing organization approved by the competent national authority may not be used.
When the materials, equipment and pipeline components used in the gas indoor project come into play, the construction unit shall organize inspection and acceptance according to the current national standards and design documents, and fill in the corresponding records. Acceptance should be based on visual inspection and inspection of quality documents. When there is any doubt about the quality of the product or the qualified documents of the product, under the witness of the personnel of the supervision (construction) unit, relevant units shall conduct a sampling inspection according to the product inspection standard.
