EN
Description
The essence of cast iron steel pipe is ductile iron pipe, because ductile iron pipe has the essence of iron and the performance of steel, so it is called this. Graphite in ductile iron pipes exists in spherical form, and the size of general graphite is 6-7 grades. In terms of quality, it is required that the spheroidization level of cast iron pipes should be controlled at 1-3 levels, and the spheroidization rate should be ≥ 80%. Therefore, the mechanical properties of the material itself have been better improved, and it has the essence of iron and the performance of steel. After annealing, the metallographic structure of the ductile iron pipe is ferrite plus a small amount of pearlite, and the mechanical properties are good, so it is also called cast iron pipe.
Specifications
| Mechanical properties of ductile cast iron pipes: | ||||
| Centrifugal ductile iron pipe | Ordinary gray cast pipe | Steel Pipe | ||
| Tensile strength (MPa) | ≥420 | 150--260 | ≥400 | |
| Elongation (%) | <1000(mm) | ≥10 | Ignore | ≥18 |
| >1000(mm) | ≥7 | Ignore | ≥18 | |
| Brinell Hardness (HBS) | ≤230 | ≤230 | About 140 | |
| The metallographic structure of the annealed ductile iron pipe is ferrite with a small amount of pearlite, and the mechanical properties are better. | ||||
| Other properties of ductile cast pipe: | |
| The hydrostatic test pressure of ductile iron pipe is shown in the following table: | |
| Nominal diameter DN (mm) | Hydrostatic test pressure (MPa) |
| 80≤DN≤300 | 5 |
| 350≤DN≤600 | 4 |
| 700≤DN≤1000 | 3.2 |
| 1100≤DN≤2000 | 2.5 |
Applications
Our main products include ductile iron pipes, which are suitable for fields such as engineering, coal mines, textiles, power, boilers, machinery, and military industry.
FAQ
Question: Do you accept third-party inspections?
Answer: Yes, we fully accept it.
Question: Do you provide samples? Free or extra?
Answer: The cost of the sample is calculated based on its value, and the freight is necessary.
Question: Do you have a large inventory of steel products?
Answer: Yes, we have a large indoor warehouse with a total annual spot inventory of over 200,000 tons.
Question: How about your delivery time and supply capacity?
Answer: The delivery period is generally within 15 to 28 working days. We can supply approximately 10,000 tons per month.
Question: How to place an order?
Answer: Buyer sends inquiry → Buyer gets quotation → Order confirmation → Buyer sends deposit → Seller prepares goods → Seller conducts strict inspection → Buyer arranges balance payment → Packaging and delivery
Question: How to ensure product quality?
Answer: All products must undergo three inspections throughout the manufacturing process, including production, random testing in the warehouse, and pre-shipment.
