carbon steel manholes

carbon steel manholes refer to the opening structure that is used for personnel entering and leaving equipment for installation, maintenance and safety inspection. It is mainly composed of short tube sections (or short pipes), flanges, and handlers. From the safety inspection consideration, the number of human holes and minimum size of the pressure container is shown in the "inspection hole".

Product Description

steel manholes are safe emergency ventilation devices installed on the top of the storage tank. They are usually used with fireproofer and mechanical respiratory valve. It can avoid accidents in the tank when the tank is damaged due to unexpected reasons. It has the role of safety and fire blocking. It is a safety device that protects the storage tank. It is especially suitable for the nitrogen tank constant tank with nitrogen caps. It has the advantages of fixed pressure emissions, fixed pressure inhalation, flexible opening and closing, safety fire blocking, compact structure, good sealing performance, and safe and reliable.
Human holes are divided into urgent pressure pores, explosion -proof fireproof breathing human holes, tank top human holes, tank wall human holes, and core human holes.
Hole holes are generally made of 304, 316L stainless steel steel plates or carbon steel.