• GB 6479 seamless steel tubes for high-pressure chemical fertilizer equipments

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”)
Khorgos port(Пограничный пункт “Хоргос”)
→East Asia, Uzbekistan,Kazakhstan,Kyrgyzstan…(Train)
Erlianhot port→Mongolia(Train and Truck)
Manchuria port→Russia(Train and Truck)

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

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