JIS G3469 P1H P2S P1F P1T Anti-Corrosion Steel Pipe Polyethylene Coated Steel Pipe For Fluid Transport
Introduction
The JIS G3469 standard specifies the requirements for anti-corrosion steel pipes, particularly those coated with polyethylene, designed for fluid transport. These pipes are essential in various industries due to their durability and resistance to corrosion.
Material
The primary material used in the manufacturing of JIS G3469 pipes is carbon steel, which is then coated with polyethylene to enhance its anti-corrosive properties.
Specification
The specifications for JIS G3469 pipes include various grades, each designed for specific applications and environments. The grades include P1H, P2S, P1F, and P1T, each with unique characteristics.
Key Features
- Corrosion Resistance: The polyethylene coating provides excellent protection against environmental factors.
- Durability: Designed to withstand high pressures and harsh conditions.
- Lightweight: Easier to handle and install compared to traditional steel pipes.
- Versatility: Suitable for various fluid transport applications.
Chemical Composition
| Element | P1H (%) | P2S (%) | P1F (%) | P1T (%) |
| Carbon (C) | 0.10-0.25 | 0.10-0.25 | 0.10-0.25 | 0.10-0.25 |
| Manganese (Mn) | 0.30-0.60 | 0.30-0.60 | 0.30-0.60 | 0.30-0.60 |
| Phosphorus (P) | ≤0.025 | ≤0.025 | ≤0.025 | ≤0.025 |
| Sulfur (S) | ≤0.025 | ≤0.025 | ≤0.025 | ≤0.025 |
| Silicon (Si) | ≤0.40 | ≤0.40 | ≤0.40 | ≤0.40 |
| Copper (Cu) | ≤0.20 | ≤0.20 | ≤0.20 | ≤0.20 |
Mechanical Properties
| Property | P1H | P2S | P1F | P1T |
| Yield Strength (MPa) | ≥ 245 | ≥ 245 | ≥ 245 | ≥ 245 |
| Tensile Strength (MPa) | ≥ 400 | ≥ 400 | ≥ 400 | ≥ 400 |
| Elongation (%) | ≥ 20 | ≥ 20 | ≥ 20 | ≥ 20 |
| Hardness (HB) | ≤ 160 | ≤ 160 | ≤ 160 | ≤ 160 |
Steel Grade
The steel grades under the JIS G3469 standard include:
- P1H: General-purpose anti-corrosion pipe.
- P2S: Suitable for higher pressure applications.
- P1F: Designed for fluid transport with enhanced flexibility.
- P1T: Tailored for extreme environmental conditions.
Application
JIS G3469 pipes are widely used in:
- Water supply systems
- Oil and gas pipelines
- Chemical processing plants
- Agricultural irrigation systems
Possible Alternative Grades
While JIS G3469 grades are specifically designed for certain applications, alternative grades may include:
- ASTM A53
- ASTM A106
- API 5L These alternatives may offer similar properties but should be evaluated based on specific project requirements.
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