Cylinder pipe assembly and method for producing the same

A cylinder pipe assembly, comprising:

• a cylinder pipe and a connection piece, said cylinder pipe having a cylinder main body and a connection portion, said connection portion having an outer shell calotte arranged on a cylinder pipe outer shell, an inner shell calotte arranged on a cylinder pipe inner shell, a structural consolidation zone and a connection hole, and said calottes being constructed as cold-formed concave embossed form portions, said structural consolidation zone being arranged in a forming area between the calottes, said connection hole being a punched hole passing through the calottes configured for a passage of a pressure medium and said structural consolidation zone surrounding said connection hole;
• said connection piece being arranged at the connection portion and having a pressure medium tube and a connecting portion, said pressure medium tube being constructed for passage of the pressure medium, said connecting portion having an annular axial boundary contour, said annular axial boundary contour and an annular mating surface of said outer shell calotte defining an annular contact surface, said cylinder pipe and said connection piece being connected in a materially bonded manner at said annular contact surface by an annular weld seam and said annular weld seam defining a sealing plane, said pressure medium tube and said connection hole defining a common pressure medium channel.