Manhole Cover

Material: Ductile iron, Grey iron

Dimension: 100mm~1000mm

Standard : EN124

Loading Pressure : A15,  B125,  C250,  D400,  E600, F900

 Coating:  Black bitumen, Epoxy resin

Type:  Square, circular, rectangular or as per customers' requirements

Color: Black, grey or as per customers' requirements

Application:  Road construction, natural gas, water supply and drainage, telecommunications

Service:  ODM  &  OEM

Package:  Pallet and wooden case or as per customers' requirements

Production ability: 10000 tons per year

Production time: 10-30 working days after receive the advance payment

Samples: available

Class Apply to Bearing Remarks:

EN124-A15 Areas where only passed by Pedestrians and Bicycles.  15KN

EN124-B125 Footways, parking lot or similar areas. 125KN HOT-SELLING
EN124-C250 The edge combinative area of vehicle road and the pavement. 250KN
EN124-D400 Vehicle area and urban arterial road. 400KN HOT-SELLING
EN124-E600 Shipping port and parking apron area. 600KN
EN124-F900 Airplane taxiway and huge dock. 900KN 

Material :

The material of Ductile iron manhole cover is a kind of spheroidal graphite cast iron. The spheroidal graphite cast spheroidal graphite is spheroidized and inoculated to effectively improve the mechanical properties of the cast iron, especially the plasticity and toughness, thereby obtaining higher strength than the carbon steel. Ductile iron is a kind of high-strength cast iron material developed in the 1950s. Its comprehensive performance is close to that of steel. It is based on its excellent performance and has been successfully used for casting some complex forces, strength, toughness and wear resistance. Parts with higher requirements. Ductile iron has rapidly developed into a widely used cast iron material after gray cast iron. The so-called "iron-based steel" mainly refers to ductile iron.

Shape:

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.

GTC  has implemented a strict and complete quality control system, which ensures that each product can meet quality requirements of customers. Strict quality control covers every procedure, from material sourcing and processing through to testing and packing. Besides, all of our products have been strictly inspected before shipment.