Fertilizer Specific Seamless Pipe
Fertilizer Specific Seamless Pipe Standards: GB6479 —— China national standards Uses: For the Seamless steel pipes for highpressure chemical fertilizer processing equipment Steel pipes No. of main production: 10,20,16Mn,10MoWVNb,15CrMo,1Cr5Mo,12 Cr2Mo ect. Dimensional Tolerance: Pipe types Outer...
Fertilizer Specific Seamless Pipe
Standards:
GB6479 —— China national standards
Uses:
For the Seamless steel pipes for highpressure chemical fertilizer processing equipment
Steel pipes No. of main production:
10,20,16Mn,10MoWVNb,15CrMo,1Cr5Mo,12 Cr2Mo ect.
Dimensional Tolerance:
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| Pipe outer-caliber(mm) | Allowable warp(mm) | Pipe thickness(mm) | Allowable warp(mm) | |
| Hot-rolled pipes | ＞219 | ±1.0％ | ＞20 | ±10％ |
Mechanical Properties:
| Standards | Steel pipes No. | Tensile strength(MPa) | Bend strength(MPa) | Elongation(％) | Impact energy(J) | Low temperature Impact Akv |
| GB6479 | 10 | 335～490 | ≥205 | ≥24 | / | －20℃≥18 |
| 20 | 410～550 | ≥245 | ≥24 | ≥39 | －20℃≥18 | |
| 16Mn | 490～670 | ≥320 | ≥21 | ≥47 | －40℃≥21 | |
| 10MoWVNb | 470～670 | ≥295 | ≥19 | ≥62 | ||
| 15CrMo | 440～640 | ≥235 | ≥21 | ≥47 | ||
| 1Cr5Mo | 390～590 | ≥195 | ≥22 | ≥94 | ||
| 12 Cr2Mo | 450～600 | ≥280 | ≥20 | ≥38 |
Chemical composition:
| Standards | Steel pipes No. | Chemical composition(％) | |||||||
| C | Si | Mn | P | S | Cr | Mo | Ni | ||
|
GB 6479 |
10 | 0.07～0.14 | 0.17～0.37 | 0.35～0.65 | ≤0.030 | ≤0.030 | / | / | / |
| 20 | 0.17～0.24 | 0.17～0.37 | 0.35～0.65 | ≤0.030 | ≤0.030 | / | / | / | |
| 16Mn | 0.12～0.20 | 0.20～0.60 | 1.20～1.60 | ≤0.030 | ≤0.030 | ||||
| 10MoWVNb | 0.07～0.13 | 0.50～0.80 | 0.50～0.80 | ≤0.030 | ≤0.030 | / | 0.60～0.90 | / | |
| 15CrMo | 0.12～0.18 | 0.17～0.37 | 0.40～0.70 | ≤0.030 | ≤0.030 | 0.80～1.10 | 0.40～0.55 | / | |
| 1Cr5Mo | ≤0.15 | ≤0.50 | ≤0.60 | ≤0.030 | ≤0.030 | 4.00～6.00 | 0.45～0.60 | ≤0.60 | |
| 12 Cr2Mo | 0.80～0.15 | ≤0.50 | 0.40～0.70 | ≤0.030 | ≤0.030 | 2.0～2.50 | 0.90～1.20 | ||
High-pressure seamless steel tubes for fertilizer applications are a specialized category of tubular products meticulously engineered to withstand the extreme operating conditions found in the modern fertilizer production industry. These tubes are critical components in the construction of key equipment such as synthesis converters, heat exchangers, condensers, and high-pressure piping systems.
Primary Applications:
- Ammonia Synthesis Units: Used in the synthesis loop for high-pressure exchange piping and converter internals.
- Urea Synthesis Plants: Ideal for urea reactors, high-pressure condensers, and strippers where resistance to corrosive carbamate solution is paramount.
- Methanol Synthesis: Employed in similar high-pressure catalytic conversion processes.
- Heat Exchangers and Condensers: Serve as the tubing for transferring heat under high pressure in various critical exchangers.
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