GB 6479 is applicable to seamless steel pipe for conveying high-temperature and high-pressure fluid in chemical fertilizer equipment, and also applicable to seamless steel pipe for other chemical equipment.Chemical fertilizer special pipe is suitable for chemical equipment and pipelines with working temperature of -40~400℃ and working pressure of 10~30MPa of high quality carbon structural steel and alloy steel seamless steel pipe.
Specifications
Standard | GB6479 |
Steel Grade/Material | 10,20,Q345B,Q345C,Q345D,Q345E,12CrMo,15CrMo,12Cr2Mo,12Cr5Mo,10MoWVNb,12SiMoVNb |
Product Name | GB 6479 seamless steel tubes for high-pressure chemical fertilizer equipment |
Outer Diameter(OD) | 1 1/2”-28”(38mm-720mm) |
Wall Thickness(WT) | 2.6mm-60mm |
Length | 5.8-16m or OEM |
Packing | PE,BE,Plastic cap or bundling |
Surface Treatmengt | Black paint,3LPE,3lPP,FBE…OEM |
Section Shape | Round |
Technique | Seamless hot rolled |
Application | for high-pressure chemical fertilizer equipment |
Sour service | No |
Place of Origin | China |
MOQ | 25 ton |
Transportation | 1.Sea port:Tianjin Xingang port,Qingdao port,Shanghai Luojing port →America,Europe,Africa,Middle East,India, Pakistan,Japan,Korea, Australia…(shipping) 2.Land port:Alataw pass port(Пограничный пункт “Алашанькоу”) |
Grade | Chemical Composition(%) | ||||||||||
C | Si | Mn | Cr | Mo | V | W | Nb | Ni | P | S | |
≤ | |||||||||||
10 | 0.07-0.13 | 0.17-0.37 | 0.35-0.65 | - | - | - | - | - | - | 0.025 | 0.015 |
20 | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | - | - | - | - | - | - | 0.025 | 0.015 |
Q345B | 0.12-0.20 | 0.20-0.50 | 1.20-1.70 | ≤0.30 | ≤0.10 | ≤0.15 | - | ≤0.07 | ≤0.50 | 0.025 | 0.015 |
Q345C | 0.12-0.20 | 0.20-0.50 | 1.20-1.70 | ≤0.30 | ≤0.10 | ≤0.15 | - | ≤0.07 | ≤0.50 | 0.025 | 0.015 |
Q345D | 0.12-0.18 | 0.20-0.50 | 1.20-1.70 | ≤0.30 | ≤0.10 | ≤0.15 | - | ≤0.07 | ≤0.50 | 0.025 | 0.015 |
Q345E | 0.12-0.18 | 0.20-0.50 | 1.20-1.70 | ≤0.30 | ≤0.10 | ≤0.15 | - | ≤0.07 | ≤0.50 | 0.025 | 0.015 |
12CrMo | 0.08-0.15 | 0.17-0.37 | 0.40-0.70 | 0.40-0.70 | 0.40-0.55 | - | - | - | - | 0.025 | 0.015 |
15CrMo | 0.12-0.18 | 0.17-0.37 | 0.40-0.70 | 0.80-1.10 | 0.40-0.55 | - | - | - | - | 0.025 | 0.015 |
12Cr2Mo | 0.08-0.15 | ≤0.50 | 0.40-0.60 | 2.00-2.50 | 0.90-1.13 | - | - | - | - | 0.025 | 0.015 |
12Cr5Mo | ≤0.15 | ≤0.50 | ≤0.60 | 4.00-6.00 | 0.40-0.60 | - | - | - | ≤0.60 | 0.025 | 0.015 |
10MoWVNb | 0.07-0.13 | 0.50-0.80 | 0.50-0.80 | - | 0.60-0.90 | 0.30-0.50 | 0.50-0.90 | 0.06-0.12 | - | 0.025 | 0.015 |
12SiMoVNb | 0.08-0.14 | 0.50-0.80 | 0.60-0.90 | - | 0.90-1.10 | 0.30-0.50 | - | 0.04-0.08 | - | 0.025 | 0.015 |
Number | Grade | Mechanical properties | |||||||||
Tensile strength Rm/MPa | Lower yield strength RaL | Elongation after break A/% | Reduction of area Z/% | Shock absorption energy KV2/J | |||||||
Wall thickness/mm | Test temperature /℃ | longitudinal | transverse | ||||||||
≤16 | 16-40 | >40 | longitudinal | transverse | |||||||
≥ | ≥ | ||||||||||
1 | 10 | 335-490 | 205 | 195 | 185 | 24 | 22 | - | - | - | - |
2 | 20 | 410-550 | 245 | 235 | 225 | 24 | 22 | - | 0 | 40 | 27 |
3 | Q345B | 490-670 | 345 | 335 | 325 | 21 | 19 | - | 20 | 40 | 27 |
4 | Q345C | 490-670 | 345 | 335 | 325 | 21 | 19 | - | 0 | 40 | 27 |
5 | Q345D | 490-670 | 345 | 335 | 325 | 21 | 19 | - | -20 | 40 | 27 |
6 | Q345E | 490-670 | 345 | 335 | 325 | 21 | 19 | - | -40 | 40 | 27 |
7 | 12CrMo | 410-560 | 205 | 195 | 185 | 21 | 19 | - | 20 | 40 | 27 |
8 | 15CrMo | 440-640 | 295 | 285 | 275 | 21 | 19 | - | 20 | 40 | 27 |
9 | 12Cr2Mo | 450-600 | 280 | 20 | 18 | - | 20 | 40 | 27 | ||
10 | 12Cr5Mo | 390-590 | 195 | 185 | 175 | 22 | 20 | - | 20 | 40 | 27 |
11 | 10MoWVNb | 470-670 | 295 | 285 | 275 | 19 | 17 | - | 20 | 40 | 27 |
12 | 12SiMoVNb | ≥470 | 315 | 305 | 195 | 19 | 17 | 50 | 20 | 40 | 27 |