ISO standards download ISO 8789:2020 pdf download – Rubber hoses and hose assemblies for liquefied petroleum gas in motor vehicles — Specification ISO 8789:2020 pdf download - Rubber hoses and hose assemblies for liquefied petroleum gas in motor vehicles — Specification. 8 Requirements for fittings 8.1 Fitting material The fittings shall be made of stainless steel, brass or plated... 02-16 Download Now