Ductile iron castings for gas and water pressure pipelines; EN-fittings; socket <(hoch)1>/<(Index)4> duckfoot bends; application, dimensions and masses— 2 стр.
Testing of Pressure Pipelines for Water by Internal Pressure; Pressure Pipes Made of Ductile Cast Iron and Steel Pipes with Cement-mortar Lining— 2 стр.