DN700,Z641H-2.5-DN800,Z641H-4.0-DN50,Z641H-4.0-DN65,Z641H-4.0-DN80,Z641H-4.0-DN100,
Z641H-4.0-DN125,Z641H-4.0-DN150,Z641H-4.0-DN200,Z641H-4.0-DN250,Z641H-4.0-DN300,Z641H-4.0-DN350,Z641H-4.0-DN400,Z641H-4.0-DN450,
Z641H-4.0-DN500,Z641H-4.0-DN600,Z641H-4.0-DN700,Z641H-4.0-DN800,Z641H-6.4-DN50,Z641H-6.4-DN65,Z641H-6.4-DN80,Z641H-6.4-DN100,
Z641H-6.4-DN125,Z641H-6.4-DN150,Z641H-6.4-DN200,Z641H-6.4-DN250,Z641H-6.4-DN300,Z641H-6.4-DN350,Z641H-6.4-DN400,Z641H-6.4-DN450,
Z641H-6.4-DN500,Z641H-6.4-DN