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7

Steel, light metal, container and pipeline construction

Steam boiler, container and piping construction

Piping and pipelines

1251.11

Modular pipe systems

1251.12

Tubes, ready-made

1251.13

Piping for the power plant construction

1251.14

Piping for nuclear power plants

1251.17

Piping for the chemical industry

1251.22

Special steel tubes for the food, luxury food and pharmaceutical industry

1251.28

Piping for mining

1251.32

Long-distance energy pipelines

1251.34

Pressure pipes, discharge pipes

1251.41

Piping for water supply plants

1251.44

Suction water piping

1251.47

Feed water piping

1251.54

Pipelines for the mineral oil industry

1251.64

Piping for gas installations

1251.67

Piping for gas networks

1251.71

Compressed-air pipes

1251.77

Siphon pipelines

1251.84

Pipework sanitation

1251.87

Testing equipment for pipings

1251.91

Pipe tapping and gas bag inserting technique for gas conduits