... 0 mm6 mHW0100B100108 mm2.0 mm6 mStainless Steel Press Fitting systemHopewell press fitting system joins pipe without welding or bolting. ... DN100, including GB 1 and GB 2.GB 1 series is same size as DVGW W534:1995, out ... , 54, 76.1, 88.9, 108mm.GB 2 series is same size as JIS G 3448-1997, out diameters ... , 48.6, 76.1, 88.9, 108mm.Which series sizes are suitable for your market?Sealing ring material:There ...