Anti-theft Manhole Cover Ductile Iron Parts
China has nearly 200 items through all levels of identification of manhole cover anti-theft results, dozens of which are composite manhole covers, more than 100 are cast iron manhole cover anti-theft devices.
Product Introduction
|
Anti-theft manhole cover ductile iron parts |
|||||||
|
Item |
Material |
Production Process |
Sintering Temperature |
Mold |
Custom |
||
|
Anti-theft manhole cover ductile iron parts |
Anti-theft manhole cover ductile iron parts |
Investment Casting |
1380℃ |
To be customized |
Yes |
||
|
Chemical composition |
Processing customization |
||||||
|
Available Materials |
Low carbon stainless steel, titanium alloy (Ti, TC4), copper alloy, tungsten alloy, cemented carbide, high temperature alloy (718, 713) |
||||||
|
Smoothness |
Dimensional accuracy |
Product density |
Appearance treatment |
Appropriate weight |
|||
|
Roughness 1～5μm |
(±0.1%～±0.5%) |
7.3-7.6g/CM³ |
According to customer requirements |
0.03g～40kg |
|||
Constituent material
China has nearly 200 items through all levels of identification of manhole cover anti-theft results, dozens of which are composite manhole covers, more than 100 are cast iron manhole cover anti-theft devices. The composite manhole cover because of its own advantages such as raw materials, the product is difficult to extract steel bars or even does not contain steel bars after molding, so it achieves the characteristics of natural anti-theft.
Composite manhole covers are available at home and abroad, mainly made of steel, cement, plastic, composite resin and so on. However, because most of the manhole cover design and well ring match is not ideal, heavy vehicles often jump over, reinforcing steel corrosion serious, especially the service life is only 3-5 years, the relative price is too high (although the price is 70-80% of the cast iron manhole cover, but the life is only about 1/10 of the latter), so the vast majority of countries still generally use cast iron manhole cover with a life of 30-50 years. In fact, China's Ministry of Construction has explicitly stipulated that it will ban manhole covers that do not meet industry standards.
Anti-theft method
There are more than 100 manhole cover anti-theft devices, mainly using six methods: one is the chain connection method, the second is the hinge connection method, the three-end mouth reverse rotation technique, the fourth is the bolt plugging technique, the fifth is the lock key method, and the sixth is the fork joint linkage method. Among them, the first and two kinds can not lock the well cover and the well ring as one, easy to open, and can break the chain and hinge with steel. The third kind only needs to rotate in reverse to open and take away the manhole cover; The fourth is to plug the hook hole with bolts and nuts, but as long as the two ends of a curved iron wire are inserted into the two grooves under the bolt head, the manhole cover can be opened and taken away; Although the fifth and sixth kinds can lock the well cover and the well ring as one, they have high requirements for coordination space and coordination accuracy, and need to cast a new manhole cover to cooperate with it, and can not transform the existing manhole cover to use, which costs quite a lot, and can not solve the problem of "rust prevention", and can not be opened with about half a year. Therefore, the above various types of manhole cover anti-theft devices, the effect is not ideal.
Detection Systems
Copper Silica Sol Investment Casting
We are the manufacturer of "Anti-theft manhole cover ductile iron parts", if you need more information please contact us!
Send Inquiry
