Circular Vertical Atmospheric Pressure Carbon Steel Quick Opening
Manhole, Strong Versatility
Product Description:
Manhole has been formed products, diameter is usually 600mm. The
center of the manhole is 750mm away from the floor. It is
convenient for the staff to enter and exit the oil tank or
ventilate during installation, cleaning and maintenance.
The manhole of the non-metallic oil tank is arranged on the top of
the tank, and the manhole of the metal oil tank is arranged on the
bottom ring plate of the tank wall. It is mostly a circular hole
with a diameter of 600mm, and its center is 750mm away from the
bottom plate, which is used for oil tank cleaning or maintenance
personnel to enter and exit oil tanks, also known as the door.
Manholes are used for lighting and ventilation at all times when
inspecting and cleaning oil tanks. When the capacity of the
vertical oil tank is less than 5000m3, 1~2 individual holes are
provided, and more than 5000m3 is provided with 2 individual holes.
The installation of manholes should be no more than 90° away from
the oil inlet and outlet lines. When only one manhole is set, it
should be placed on the opposite side of the light transmittance
hole on the top of the tank; When two man holes are set, one of
them should be located opposite the light transmission hole, and
the other should be at least 90° away from the first man hole.
A manhole should be located near the right side of the inlet and
outlet oil pipe, and as far as possible, the manhole is directly
opposite the tank room closed door for personnel to enter and exit,
maintenance of the oil tank and ventilation nozzle.
Since the manhole is installed on the lowest body ring of the oil
tank, leakage prevention is particularly important. It is required
that the joint surface of the two flanges must ensure its flatness
without flapping and twisting. The reinforcing plate and flange
should be cut on the whole steel plate as far as possible without
splicing. The flange and cover plate are processed with sealing
rings, and special attention should be paid to protection during
construction. Seal with 3mm thick asbestos rubber gasket, not
allowed to break. When installing the tight bolts on the manhole
cover, apply even diagonal force to prevent deformation of the hole
cover.
Features:
- Product Name: Manhole
- Application: Boilers, Downpipes, Telecommunications, Cable TV Used
Weak Current Wells, Large Bridges For Maintenance Of The Internal
Passage.
- Connection: Fastener Connection
- Size: Φ400-Φ600
- Package: Wooden Box, Pallet Or According To Customer Requirements
- Shape: Round, Oval
Technical Parameters:
| Technical Parameter | Details |
|---|
| Size | Φ400-Φ600 |
| Surface treatment | Polishing, Painting |
| Shape | Round, Oval |
| Application | Boilers, Downpipes, Telecommunications, Cable TV Used Weak Current
Wells, Large Bridges For Maintenance Of The Internal Passage. |
| Connection | Fastener Connection |
| Package | Wooden Box, Pallet Or According To Customer Requirements |
| Color | Metallic Color |
| Material | Stainless Steel |
| Standard | HG/T21514-21535-2014 |
| Origin | Cangzhou,China |
