... stainless steel 304NUT MATERIALzinc-plated steel AIRPROOF MODEmetal circularity to airproofing, no rubber gasketBEND TIMES70~80sWORKING TEMPERATURE–196°C ... 10 ; ANSI Z21.75/CSA 6.27;ISO9001:2008EXPORT TO South American,North American,Mid East,East Europe,West ... petroleum liquefied gas, natural gas, oil, water. Features: 1. Connector for indoor and outdoor gas pipings; 2. High flexibility, withstands ...