截止阀数量名称？直径325mm钢管用什么型号的截止阀？截止阀数量名称？保温截止阀：BJ41W、BJ41Y、BJ45H、BJ45Y、BJ45W　　锻钢截止阀：J61Y、J61H、J41H、J11H　　波纹管截止阀：WJ41H、WJ41Y、WJ41W　　仪表针形截止阀：J13、J23　　低温截止阀：DJ...