Product Name: elliptic with pressure endoscopic people hole YAA-808 product family: stainless steel hole series Origin: Wenzhou Introduction: stainless steel hole public said Path: Ф400X300mm, Ф500X400mm (can be based on user requirements to provide different models, specifications endoscopic ) Material: 304,316 L (Other material available according to user requirements) Product Overview: All pressure vessels and non-pressure vessels manhole quick opening structure, easy to open, safe, beautiful and practical shape, square, round , oval, pressure ≤ 0.5 MPa. Inside and outside mirror finish Ra ≤ 0.8 m, within the mechanical polishing and electro-polished Ra ≤ 0.2, the outer surface of the mirror-polished or matte. Widely used in the pharmaceutical, chemical, food and other industries on the pressure tank and the reactor container. Can also be configured simultaneously mirrors, spotlights, security grid and piped connections.