BZGT-16-DN125,BZGT-16-DN150,
BZGT-16-DN200,BZGT-16-DN250,BZGT-16-DN300,BZGT-16-DN350,BZGT-16-DN400,BZGT-16-DN450,
BZG-25-DN50,BZG-25-DN65,BZG-25-DN100,BZG-25-DN125,BZG-25-DN150,BZG-25-DN200,
BZG-25-DN250,BZG-25-DN300,BZG-25-DN350,BZG-25-DN400,BZG-25-DN450,
BZGT-25-DN50,BZGT-25-DN65,BZGT-25-DN80,BZGT-25-DN125,BZGT-25-DN200,
BZGT-25-DN250,BZGT-25-DN300,BZGT-25-DN350,BZGT-25-DN400,BZGT-25-DN450,