ISO 27127:2014 specifies requirements for two types of thermoplastic multi-layer (non-vulcanized) transfer hoses and hose assemblies for carrying liquefied petroleum gas and liquefied natural gas. Each type is subdivided into two classes, one for onshore duties, and the other for offshore.
- Class A hose is for use onshore.
- Class B hose is for use offshore.
ISO 27127:2014 is applicable for hose sizes from 25 mm to 250 mm, working pressures from 10,5 bar to 25 bar and operating temperatures from -196 °C to +45 °C, according to class.