1. High Temperature Resistance 2. Heat Preservation 3. Non-toxic: 4.Corrosion Resistant ... conveyance . 20mm*2.0mm,25mm*2.3mm 32mm*2.9mm, 40mm*3.7mm ,50mm*4.6mm 63mm*5.8mm, 75mm*6.8mm ,90mm*8 ... 2mm , 110mm*10mm. S3.2 series:2.0MPa for Hot water clean hot water conveyance20mm*2.8mm,25mm*3.5vmm 32mm*4.4mm ... for clean potable water conveyance.20 20mm*2.0mm,25mm*2.3mm,32mm*2.9mm,40mmx4.5mm,50mmx5.6mm,63mm*7. ...