首页>
外国专利>
1 Shows an axial half cross section of the tubular element 1 shows an axial half cross section in order to seal resistant to the fatigue and the tubular joint 1 shows an axial half cross section of the tubular resultant
1 Shows an axial half cross section of the tubular element 1 shows an axial half cross section in order to seal resistant to the fatigue and the tubular joint 1 shows an axial half cross section of the tubular resultant