Diámetro Ø : 20
-, -
4231069000, 0004207524, 81511016115, 6212188, 6212188, 1010154, 1738480, 834483
BS3404, BS3417, 4235050000, 4235050010, 81511016378, 1932639, 0203277400
9253241010, 0084208518, 0084209218, 0074206018, 0094209618, 7302881
4231049000, 0074200118, 81511016175