|Place of Origin:||CHINA|
|Minimum Order Quantity:||1TON|
|Packaging Details:||Plywood pallet; steel pallet; customer-specified|
|Payment Terms:||L/C, D/A, D/P, T/T, Western Union, MoneyGram|
|Supply Ability:||2000 Ton/Tons per Month|
|Product Name::||Manhole Cover And Frame With Locking||Shape::||Round And Square|
|Surface Treatment::||Bituminous Paint/Water-based Paint||Clear Opening::||¢600 ¢800|
|Standard::||EN124-2 Standard||Application::||Municipal Construction/residential Areas Etc.|
steel manhole cover,
double sealed manhole cover
OEM Metal Manhole Cover EN124 D400 Ductile Iron GJS-500-7 - EN 1563
Cast iron manhole covers are generally divided into round and square. In the urban area, circular is generally used, because the round manhole cover is not easy to tilt, which can better protect the safety of pedestrians and vehicles. The use of a circle is mainly due to the fact that the circular manhole cover has the same length through each of its centers, so that if the manhole cover is rolled up by the passing vehicle, the diameter will be slightly smaller than the wellhead below. Wide, the manhole cover will not fall into the wellhead. If square is used, because the diagonal of the square is obviously longer than the length of each side, when the manhole cover is rolled up, it is easy to fall into the well along the diagonal direction of the wellhead, causing security risks. If the wellhead is rounded or significantly smaller than the manhole cover, the square manhole cover will not fall into the well. This involves the problem of utilization and savings of a material. The use of the wellhead depends on the size of the wellhead. If a square manhole cover with a much larger area than the wellhead is to be installed on it, then the material utilization and practical value are naturally not more effective than using a circular manhole cover directly, which not only saves the material of the manhole cover, but also The safety of the wellhead is ensured and used in the countryside and cable wells, generally square, which can better prevent the entry of liquids such as rainwater.
Ductile iron GJS-500-7 - EN 1563 manhole cover, produced according to provisions of the latest edition of the UNI EN 124, consists of a square/octagonal/circular frame as supporting base and circular at the top, corresponding to the street level, provided with: a continuous perimetral outer winglet, of a width not less than mm. 20, to obtain a greater supporting base and allow a better anchorage to the foundation also by elongated holes and/or holes created along the perimeter; “U” shaped internal seat; elastomeric cushioning insert, anti-noise and anti-rocking, suitably shaped to frontally withstand the edge of the cover and absorb vibrations; external compartment with closed bottom, suitably dimensioned for the in_x005fsertion an opening lever, provided with a jut for accommodating the elastic appendix of the cover and block the locking system; hinge housing with closed bottom and cover locking system in open position. Cover of circular shape, selfcentering in the frame, provided with: locking system formed by a suitably shaped elastic appendix which fits on tab on the frame and unlockable with any lever; blind slot, for the inserting of the lifting keys; an appendix suitable to ensure the positioning of the cover to the frame in the hinge compartment without preventing the extractability of the cover; central and circumferential space for the insertion of any inscription (e.g. contractor entity + etc.);
anti-slippery reliefs; identification of the outer shape of the frame and of the product size, expressed in cms.
1. Put damage:
This is the biggest characteristic of ductile iron manhole covers, ductile iron manhole covers can be heavy pressure 36T/60T, light can be confined 21T. Even if the load pressure exceeds its limit, ductile iron manhole cover cast iron manhole cover is not as common as broken, but a slight deformation of the car and pedestrians has a certain security.
only through the mouth of the Manhole set to U-shaped, with a T-type synthetic rubber, U-shaped slot embedded in the contact Manhole covers and the process in order to cushion and reduce the vibration force.
3mm tread covers convex surface, and thus play a good non-slip effect.
Manhole covers the contact with the colossal surface, directly on the T-rubber, and dealt with gently, to eliminate noise.
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