不銹鋼吊環視鏡人孔：不銹鋼人孔公稱通徑：Ф400X300mm、Ф500X400mm（可根據用戶要求提供不同型號、規格視鏡）   產品材質：304、316L等（可根據用戶要求提供其它材質）   產品概述：所有壓力容器或非壓力容器人孔均采用快開式結構，開啟方便、安全、外形美觀實用，有方形、圓形、橢圓形，承受壓力≤0.5MPa。內外鏡面光潔度Ra≤0.8μm，內機械拋光與電拋光Ra≤0.2μm，外表面鏡面拋光或亞光。廣泛應用于醫藥、化工、食品等行業的壓力罐和反應釜等容器上。也可同時配置視鏡、射燈、安全網格及管道輸送連接件。 

 Stainless steel rings mirror manhole: stainless steel manhole nominal diameter: diameter 400X300mm, Phi 500X400mm (user requirements to provide different models and specifications mirror) product material: 304, 316L (according to user requirements to provide other materials) product overview: all pressure vessels or non pressure container manhole adopt quick opening structure, convenient opening, safety, beautiful and practical, with a square, round, oval, bear pressure equal to or lower than 0.5MPa according to. Inside and outside the surface roughness Ra is less than or equal to 0.8 m, in mechanical polishing and electrolytic polishing of Ra less than or equal to 0.2 mu m, the outer surface of mirror polished or matt. Widely used in pharmaceutical, chemical, food and other industries, such as pressure tank and reactor vessel. Can also be configured mirror, lamp, safety grid and pipeline connections.