1) 355 Mm Outer Dia Upvc Housing Pipe Pn-10 As Per Iso:4422-2:1996 (E) (Wall Thickness13.60 Mm) 2) 8" Dia Upvc Straight Coupler Bs-3505:1968 Class-C (Outer Diameter 218.80- 219.40 Mm, Wall Thickness7.80 Mm) 3) 8" Dia Upvc ...