Changzhou boyuan plastic co.,ltd is a manufacturer who has been in the water treatment field for more than 10 years.The products with high impact resistance and tensile strength helped us gained a good reputation both in domestic and overseas,it is widely used in the FRP tank,SS,CARBON Steel and so on 1)Model No.:HD6700B2-2X,HD6850B2-2X. 2)Material :food grade ABS or PP 3)Suitable for FRP tank in diameter of 36’-63’ inches(900-1600mm) 4)Pressure-bearing of the tank:1MPA 5)Guarantee period:generally one year,it will be affected according to the different water quality in your country.