Stainless steel people hole is installed in storage tank top of security emergency ventilation device, usually and fire players, and machinery breathing valve supporting using, both can avoid due to accident causes caused tank within sharp Super pressure or vacuum Shi, damaged storage tank and occurred accident, and has up to security resistance fire role, is protection storage tank of security device, special applies Yu storage material to nitrogen capped of vaulted atmospheric tank. Constant pressure constant pressure inhalation, emissions, opening and closing with flexible, secure, fire resistant, compact, good sealing performance, security, reliability and so on.Stainless steel manholes 304, material of steel is generally used as a raw material to produce. Stainless steel manholesManhole emergency pressure relief hole, explosion-proof fire breathing manhole, tank top manhole, tank, such as core-wall manhole and manhole.

2.Professional production

3.welcome to order ,any questions,please feel free to contact us!