What is Cast Iron Pipe?
The irreplaceable nature of cast iron pipes
Cast iron pipes are commonly used materials in the field of industrial pipelines. Their high strength, corrosion resistance, and long service life make them widely used in water supply, drainage, energy transmission, etc. According to relevant statistics, more than 30% of the world’s municipal water supply networks still use cast iron pipes.
Cast Iron Pipe Classification And Core Application Scenarios
Cast iron pipe types and technical parameters
|
Type |
Technical features |
|
Ductile Iron Pipe |
Spheroidizing treatment, tensile strength ≥ 600MPa |
|
Hubless Cast Iron Pipe |
No socket design, outstanding earthquake resistance |
|
Vermicular Cast Iron Pipe |
Vermicular graphite cast iron, resistant to hydrogen sulfide corrosion |
Application Scenario
- Municipal infrastructure: cast iron drain pipe is used as urban water supply system, drainage and sewage treatment, medium and low pressure gas pipeline network because of its high pressure resistance (>30MPa) and corrosion resistance. Vermicular Cast Iron is used.
- Industrial system: transportation of chemical and metallurgical media. Energy industry application, such as C30 grade ductile iron pipe used as oil field water injection pipeline.
- Buildings and public facilities: indoor cold water pipes and air conditioning water systems, outdoor fire hydrant pipe network.
- Agriculture and water conservancy: saline-alkali land irrigation pipe network, centrifugal ductile iron pipes above DN600 are used as reservoir water diversion pipes.
Characteristics Of Cast Iron Pipe
- High strength and toughness: Ductile iron pipes are added with spheroidizers to form a spherical structure, which has higher tensile strength and compressive strength and is suitable for high-pressure environments.
- Multiple material types: including Grey Cast Iron Pipe, Ductile Cast Iron Pipe and Vermicular Cast Iron Pipe, different materials correspond to different application scenarios
- Good anti-corrosion performance: both inside and outside are anti-corrosive. Cast iron pipe lining and exterior are cement asphalt coating, epoxy resin coating or zinc spraying.
- Long life: life of more than 50 years, far exceeding PVC. Cast iron pipe repair cost is also lower.
How To Cut Cast Iron Pipe？
What Can Be Used to Cut Cast Iron Pipe?
There are many tools for cutting cast iron pipes, and different tools are used for different sizes of cast iron pipes. For larger projects or larger and thicker cast iron pipes, it is recommended to use a power cutting tool, which can be equipped with a rotary cutter or angle grinder with diamond or harder alloy blades. For smaller and easier to cut cast iron pipes, you can use a dedicated blade handheld tool, such as a hacksaw or reciprocating saw.
Steps for Cutting Cast Iron Pipe
- Preparation: Check if the pipe has cracks or severe deformation. If so, please retaliate directly. Clean the surrounding area, ensure sufficient space, maintain good ventilation, and avoid inhaling cutting dust.
- Measurement and marking: First determine the location of the cutting pipe and mark it with a marker.
- Fix the pipe: Be sure to fix the cast iron pipe firmly before cutting to prevent it from moving during cutting.
- Choose cutting tools: Choose the appropriate tool according to the size of the pipe.
FAQs：
1. What are the key parameters to pay attention to when purchasing?
Certification standards: GB/T 13295 (ductile iron pipe), ANSI B16.1; Pressure level: K9 (common), K12 (high pressure); Quality inspection report: focus on checking the spheroidization rate (≥80%) and lining pinhole detection
2. Can you drill holes in cast iron pipes?
You can use high-quality drill bits and suitable metal drill bits to drill holes in cast iron pipes.
