| 摘要 |
FIELD: gas industry. SUBSTANCE: gas pipe line consists of ferroconcrete or cement smooth pipes. Plastic pipe or tubular film of sufficient thickness and strength is inserted into the pipes without any spaced relation. The plastic pipe or film should not enter into a reaction with a gas supplied and should not be penetrable for the gas. To join the pipes their ends are inserted to each other. The end faces of the pipes are provided with projections which are interconnected via noncorroding ties such as aluminum, plastics and so on. EFFECT: enhanced reliability. |
