... .7, 48.6, 76.1, 88.9, 108mm.Which sizes is suitable for your market? Do you prefer pipe length of 5.8m ... material:Option 1. CIIR(Chlorinated butyl rubber): Sanitary for human consumption, not oil-resistant. Suitable for drinking water, tap water, hot and cold ... : Nitrile rubber: oil proof, but not sanitary but poisonous. It is suitable for fuel gas, fuel oil and oil. But NEVER use it ...