The resources cycle
We need to handle the limited resources of our environment responsibly and sustainably. Anyone who manufactures products from these resources must ensure that they can be used for as long as possible and that, at the end of their “life”, the materials are not only recyclable, but also part of the circular economy. It is precisely for this reason that we use ductile cast iron.
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Piping systems in ductile cast iron can be in service for more than 100 years without problem and have the advantage that they can be recycled as often as necessary and so contribute to the protection of the environment (Fig. 5). This is in keeping with the principle that “this used to be a pipe, a fitting or a valve in ductile cast iron and it will once again become a pipe, a fitting or a valve in ductile cast iron”.
Pipes, fittings and valves do not consist of limited-availability fossil resources but of steel and cast-iron scrap which we source from predominantly regional material cycles. CO2 emissions are already being continuously reduced in production and “waste products” are fed back into the product cycle. Not only do our ductile iron pipe systems protect limited resources. The soil, also a resource, can be treated with care as well if the correct pipe is selected for the available soil.
#reduceplastic
Plastic is ubiquitous and it is difficult to conceive of our everyday life without it. But we are learning more and more about the growing risk which plastic represents for us and our environment (Fig. 6). For our good ground we recommend pipe systems made of ductile cast iron.
Already around 40% of the supply pipelines for drinking water in Germany are made from different types of plastic [2]. These drinking water pipes are recyclable – they can be used to make other pipes and other products, such as park benches and foils. However, there are limits to the use of recycled plastic in drinking water pipes: The use of recycled plastic is limited to the use of recirculated material (leftovers and offcuts) that is generated by the manufacturer itself, is not contaminated and has not yet been placed on the market [3]. Cast iron, on the other hand, is 100% recyclable at the same quality level without any loss in value. This means that not only the recycling economy, but also the circular economy can be realised – even in the drinking water sector!
Locally sourced mains water supplied via the municipal drinking water network is good for the environment. Mineral and table water, by contrast, is filled into bottles and transported by road, which requires a thousand times more energy than is needed for the provision of mains water from the drinking water network. The use of ductile cast iron drinking fountains, such as those used in Berlin for example, supplies thirsty people with fresh, cool drinking water quickly, simply and free of charge and sustainably supports the environmentally friendly consumption of drinking water. The drinking fountains can be used as “refill stations” and so combat the mountains of plastic bottle waste.
Cooler cities
Nowhere else is global warming, and the rising temperatures associated with it, so clearly felt as in our towns and cities. In the summer months, surfaces sealed with asphalt and concrete do not cool down and, in case of heavy rainfall, are unable to absorb water.
The consequences of this are heat islands in the summer, flooding and inundated basements when it rains. Meaning that life in the city is becoming not only more difficult but also less healthy. The solution lies in so-called Sponge Cities, where space is left in the ground for rainwater and for trees: space to breathe, to grow and to store water (Fig. 7). So that green areas and trees can cool our cities and make them habitable even during longer periods of drought or heat. For these sponge cities, space is needed underground. In pipe trenches with robust and root-resistant piping systems, this space can be made available to a sufficient extent. Ductile iron pipes with their flexible joints and with a cement mortar coating are robust and root-resistant and so are an important key to cooler cities.
The R&D project “BoRSiS – soil pipe system as an innovative element of climate-adjusted urban drainage”, which was launched on 1st October with the participation of EADIPS®/FGR®, pursues the further implementation of the sponge city principle in the street space [4]. The objective of BoRSiS is to use the pipe trenches of pipes under pavements or streets (during heavy rainfall) and to release water with a time delay (during dry periods) to irrigate urban trees. By using the pipe trench, an extended storage area for rainwater and the root zone is available without the need for additional surface area (compared to infiltration trenches).
Ductile iron pipes and fittings will not bend at high temperatures, nor will they produce gases that are unfavorable to people. It has high hardness and good shock resistance. There are many ductile iron pipes used in construction now, which are very corrosive and have a long service life. It is also possible to use ductile iron pipes in the deep sea, and the price of ductile iron pipes is very affordable. Because it is compressive, does not penetrate water, and has good sealing. Due to the above reasons, ductile iron pipes are basically maintenance-free and easy to construct, so they are very popular with everyone. Let's follow WESDOM technician to briefly understand the advantages and scope of use of ductile iron pipes.
1. Scalability, high strength and pressure function and corrosion resistance of ductile iron pipes;
2. The elongation rate can reach more than 10%, the tensile strength of the ductile iron pipe is more than 420 MPa, and the pressure value is more than 4 MPa;
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3. High deformation resistance in high-pressure water supply and gas pipeline systems;
4. Anti-corrosion measures for ductile iron pipe paint, such as intrusion resistance and corrosion resistance and a service life of 100 years;
5. The installation and construction are convenient, and the project cost is economical;
6. Reliability: The ductile iron pipe has a high bearing capacity and a certain elongation, and adopts a flexible interface, the axial deviation of 3 to 5 degrees will not produce medium seepage and leakage, and has strong resistance to earthquake and Subsidence of foundations.
1. Urban domestic water. The domestic water supply in cities is becoming more and more tense, so in addition to drinking water, reclaimed water can be used for watering, car washing, etc.;
2, the diversion pipe. In the city, in order to avoid the depletion of groundwater, iron cast pipes can be used to transfer the water from the lake to the city for everyone's daily use;
3. Agricultural irrigation. Because the iron cast pipe has good corrosion resistance and strong compression resistance. In agricultural irrigation, iron cast pipes can be used regardless of the nature of the soil;
In industrial production. Cast iron pipes have good rigidity and toughness, which play a great role in use. It can withstand both load and pressure, and transport industrial materials safely.
WESDOM now having wide range products for ductile iron pipes and fittings: like Flange adaptors, Flexible Couplings, Universal Couplings, Dismantling Joints, Saddle clamps, etc. Welcome to send us a inquiry if you have needs or interests.
What are the advantages and application scope of ductile iron pipes and fittings?
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