A.0.3~0.4MPa B.0.3~0.35MPa C.0.25~0.35MPa D.0.25~0.4MPa
A.鐵紅防銹漆 B.硼鋇酚醛防銹漆 C.中灰防銹漆 D.紅丹防銹漆
A.DN150mm B.DN100mm C.DN125 D.DN80mm