1) The standard of pipe: ISO2531:1998, K9
2) Effective length: 6m
3) Inner cement line: Portland cement line as per ISO4179
4) Zinc coating: at least 130g/m2 as per ISO8179
5) Bitumen painting: at least 70um as per ISO8179
6) With 100% quantity of NBR ring, or SBR ring, or EPDM ring as per ISO4633
8) High strength, lighter than grey iron, good corrosion resistance, no furring, small flow resistance, easy fixing, long life tome about 100 yeas
9) Produced by Hangzhou chunfeng machine
10) Checked by automatic inspection equipment
Ductile Cast Iron Pipe (%)
Grey iron pipe (%)
Steel pipe (%)
Ductile Cast Iron Pipe
Grey Iron Pipe
13) T type mechanical joint
14) Packing: in bulk or container
1.20 years manufacturing and exporting experiences.
- Q:What is the relationship between the direction of the spigot and the direction of the flow in the ductile iron pipe?
- The utility model is mainly used for conveying water, and is an ideal choice for tap water pipes.
- Q:How can the internal and external walls of ductile iron pipes be protected from corrosion?
- Internal walls can be painted anti-corrosion paint, exterior anti-corrosion can choose to paint, but also useful anti-corrosion tape, or do 3PE anti-corrosion, look at your anti-corrosion requirements, cost budget and other construction objective conditions.
- Q:What are the interface forms of ductile iron pipes? The best drawings are available. Thank you
- T interface type sealing ring is a self sealing rubber ring, when the pipe internal pressure increases, the contact pressure between the seal and the pipe increases, T interface can not only allow the deflection angle of the axial displacement, and convenient for installation. When the T type interface is installed, the sealing of the rubber ring can be ensured as long as the socket is simply loaded into the socket and the rubber ring is pressed tightly. This kind of interface has the advantages of reliable sealing, good seismic resistance and corrosion resistance, and it is a better interface.
- Q:Principles for the antiseptic treatment of ductile iron pipes
- Anti corrosion process of ductile iron pipe:1. asphalt paint coatingBituminous paint coatings are pipes used to carry gas. Preheating the pipe before spraying can improve the adhesion of asphalt paint and accelerate drying.2. cement mortar lining + special coatingThe internal corrosion prevention measures are suitable for pipes conveying sewage, and the corrosion resistance of lining can be improved.3. epoxy coal tar coatingThe epoxy coal tar coating is not only suitable for gas pipelines, but also for sewage pipes. It is a two component coating with a high adhesion and a very smooth surface
- Q:Can ductile iron pipes be made into clear tubes?
- Not recommended to do the tube, mainly aesthetic problems
- Q:Do rigid cement cast iron pipes need cement piers?
- Ductile weakness: ductile cast iron pipes connected by human factors such as the operation level of responsibility, influence, construction not convenient. The advantages of PE PE PE pipe has good corrosion resistance and its anti inorganic performance than that of the metal pipe is much stronger in the buried without corrosion, construction convenient. Small diameter PE pipe in the price performance ratio is better than that of steel and ductile iron.PE tube have disadvantages: benzene, gasoline, carbon tetrachloride and other organic solvents have certain effect on pe. If the organic solvent is infiltrated into the polyethylene, the swelling will occur, and its physical properties will be decreased. Its pressure resistance and temperature resistance are poor.
- Q:How many casting methods are there in ductile iron casting? A 60*6 discus can not have sand holes. Its surface is smooth. What process can be used to make it?
- Is it better to use precoated sand, but only a little higher cost?.
- Q:Fire water supply network adopts ductile iron pipe, the test pressure should be no more than MPa
- To your selected fire pump highest lift 1.5 times to suppress, generally not more than 1.6MPa, if the use of ductile iron pipe, test pressure according to 2MPa to suppress.
- Q:There are several forms of flexible interfaces for Spigot Cast Iron Pipes
- China's production of "GB 13295-1991 centrifugal casting ductile iron pipe)," GB13294-1991 "provisions of nodular cast iron pipe annealing, centrifugal casting, water for ductile iron pipe pipe, pipe fittings, rubber technical performance, the interface type adopts slip type T shaped interface.
- Q:What are the requirements for the hydrostatic test of ductile iron pipes?
- Hydraulic test of pipeline segment length should not be more than 1 kilometers, the test pipe should be in full of water, no pressure under the condition of full immersion, soaking time of ductile cast iron pipe without mortar lining not less than 24 hours, a mortar lining the immersion of not less than 48 hours.
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