... ,Φ159,Φ219,Φ273,Φ325,Φ377,Φ426,Φ529,Φ630,Φ720,Φ820,Φ920,Φ1020,Φ1100,Φ1200(for customer’s requirment) TypeBH190SBH260SBH300BH350BH420BH510 technical parametersprincipal ... ,Φ159,Φ219,Φ273,Φ325,Φ377,Φ426,Φ529,Φ630,Φ720,Φ820,Φ920,Φ1020,Φ1100,Φ1200(for customer’s requirment)