engleski

Arc welding of steel pipe connections on steel gas pipeline in service

The paper presents an installing procedure (welding/drilling) of the steel tapping tees to the steel gas distribution network, without interruption of the consumer supplies. The steel tapping tee for welding/drilling installation procedure is standardized steel fitting, which is installed between steel gas distribution networks and the connected steel gas pipeline. Two types of steel tapping tees were described. After welding the fitting, the pipeline of the gas distribution network will have to be drilled. Welding/drilling procedure described in the paper is used for branching of the steel gas distribution networks as well as for connecting of the new consumer on the existing network. The practical experience has shown that the described procedure attains high-quality connection. The procedure is safe, reliable, economical and ecological.

arc welding; gas pipeline; natural gas

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