Regular stainless steel manhole flange manufacturer Hebei Thai Extension precision equipment factory is the most formal of manhole flange manufacturers you still looking for the stainless steel flange manufacturers worry about it? There are many brands but uneven quality stainless steel flange on the market quite a mixed bag not allow customers to make the right judgments, my point of view is not recommended customers only focus on price, quality, and should do more contrast from the upper-scale manufacturers or personally to visit factories in Hebei Thai Extension sincere welcome new and old customers to visit our company guidance stainless steel manhole 304,316L materials commonly used as a raw material for steel production. Manhole manholes into emergency relief, explosion-proof fire retardant breath manhole, tank top manhole, the tank wall manholes and manhole with a core. Manhole been molded products typically have a diameter of 600mm. Manhole spacing the floor is usually 750mm. Facilitate staff means, cleaning, and out of the tank for maintenance and ventilation. Non-metallic tank manhole located at the top of the tank, manhole metal tank located under the most laps in the tank wall plate. Most of the hole diameter of 600mm, spacing therebetween floor 750mm, tank cleaning or maintenance personnel to access oil tank, also known as the door. Maintenance Cleanup tank manhole time use daylighting and ventilation. Vertical tank capacity of 5000m3; less set from 1 to 2 own hole, 5000m3 located above 2 own holes. Means manholes should be out of the oil pipeline at intervals not greater than 90 °. When only set a own hole, it should be placed in the opposite roof aperture; when the set 2 own hole, during one situated opposite the aperture, and the other should be separated by at least the top of their own hole 90 °. Manholes should be located in the vicinity of the right of access to a pipeline, and try to make the hole is on the tank compartment closed doors, so that people in and out, to take over the maintenance of tanks and ventilation available. Since the manhole in the tank means lowermost body circle, it is particularly important to prevent leakage. Asked the two flange contact surfaces must ensure that its flatness, no floating twist phenomenon. The reinforcing plate and flange plate should be on the cutting block without stitching. Formed with the cover flange and seals, to pay special attention in the construction and maintenance. 3mm thick sealing asbestos rubber gasket, does not allow fracture. When tightening the bolts on a manhole cover of the unit, are to be diagonally and force, to prevent deformation of the manhole cover.