F-PPR pipe high-perfor mance glass fiber composites Series:S4,S3.2,S2.5 Dn:20-63mm F-PPR pipe high-performance glass fiber compositesSeries:S4,S3.2,S2.5Dn:20-63mmNameSeries Spec(mm)F-PPR PipeS4 PN16D20*2.3D25*2.8D32*3.6D40*4.5D50*5.6D63*7.1S3.2 PN20D20*2.8D25*3.5D32*4.4D40*5.5D50*6.9D63*8.7S2.5 PN25D20*3.4D25*4.2D32*5.4D40*6.7D50*8.3D63*10.5 F-PPR Glass Fiber pipe