GB 5310 12Cr1MoVG seamless alloy steel tube is for high temperature and pressure service like high pressure boiler tube. It is a kind of boiler tube under classification of seamless pipe, located inside of boilers that heat water in order to produce steam. It is usually used under the condition of high temperature and high pressure. So it must have high strength and anti-corrosion properties.
Specifications
| Standard | GB/T5310 |
| Steel Grade/Material | 20G, 20MnG, 25MnG, 15MoG, 20MoG,12CrMoG,15CrMoG,12Cr2MoG,12Cr1MoVG |
| Outer Diameter(OD) | 1.5”-28”(38mm-720mm) |
| Wall Thickness(WT) | 2.6mm-60mm |
| Length | 5.8-16m or OEM |
| Packing | Plastic cap or bundling |
| Surface Treatmengt | Black paint,3LPE,3LPP,FBE or OEM |
| Section Shape | Round |
| Technique | Seamless hot rolled |
| Application | High pressure boiler tube |
| 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”) |
| Steel types | Grade | Chemical Composition in % by mass | |||||||||||||||
| C | Si | Mn | Cr | Mo | V | Ti | B | Ni | AI | Cu | Nb | N | W | P | S | ||
| No more than | |||||||||||||||||
| Carbon steel | 20G | 0.17〜0.23 | 0.17 〜0.37 | 0.35〜0.65 | — | — | — | — | — | — | — | — | — | — | — | 0.025 | 0.015 |
| 20MnG | 0.17 〜0.23 | 0.17 〜0.37 | 0.70〜1.0 | — | — | — | — | — | — | — | — | — | — | — | 0.025 | 0.015 | |
| 25MnG | 0.22 〜0.27 | 0.17-0.37 | 0.70〜1.0 | — | — | — | — | — | — | — | — | — | — | — | 0.025 | 0.015 | |
| Alloy steel | 15MoG | 0.12 〜0.20 | 0.17 〜0.37 | 0.40 〜0.8 | — | 0.25 〜0.35 | — | — | — | — | — | — | — | — | — | 0.025 | 0.015 |
| 20MoG | 0.15 〜0.25 | 0.17 〜0.37 | 0.40 〜0.8 | — | 0.44 〜0.65 | — | — | — | — | — | — | — | — | 0.025 | 0.015 | ||
| 12CrMoG | 0.08 〜0.15 | 0.17 〜0.37 | 0.40 〜0.7 | 0.40 〜0.7 | 0.40 〜0.55 | — | — | — | — | — | — | — | — | — | 0.025 | 0.015 | |
| 15CrMoG | 0.12〜0.18 | 0.17 〜0.37 | 0.40 〜0.7 | 0.80〜1.1 | 0.40〜0.55 | — | — | — | — | — | — | — | — | — | 0.025 | 0.015 | |
| 12Cr2MoG | 0.08 〜0.15 | <0.50 | 0.40 〜0.6 | 2.00 〜2.5 | 0.90〜1.13 | — | — | — | — | — | — | — | — | — | 0.025 | 0.015 | |
| 12Cr1MoVG | 0.08 〜0.15 | 0.17 〜0.37 | 0.40〜0.7 | 0.90 〜1.2 | 0.25〜0.35 | 0.15〜0.3 | — | — | — | — | — | — | — | — | 0.025 | 0.01 | |
| Mechanical properties | |||||||||
| Grade | Tensile properties | Shock absorption energy (KV2/J) |
Hardness | ||||||
| Tensile strength Rm Mpa |
Lower yield strength or specified plastic elongation strength ReH or Rp0.2 |
Elogation at break A % |
Longitudinal | Transverse | HBW | HV | HRC or HRB | ||
| Longitudinal | Transverse | ||||||||
| No less than | |||||||||
| 20G | 410~550 | 245 | 24 | 22 | 40 | 27 | 120~160 | 120~160 | — |
| 20MnG | 415~560 | 240 | 22 | 20 | 40 | 27 | 125~170 | 125~170 | — |
| 25MnG | 485~640 | 275 | 20 | 18 | 40 | 27 | 130~180 | 130~180 | — |
| 15MoG | 450~600 | 270 | 22 | 20 | 40 | 27 | 125~180 | 125~180 | — |
| 20MoG | 415~665 | 220 | 22 | 20 | 40 | 27 | 125~180 | 125~180 | — |
| 12CrMoG | 410~560 | 205 | 21 | 19 | 40 | 27 | 125~170 | 125~170 | — |
| 15CrMoG | 440~640 | 295 | 21 | 19 | 40 | 27 | 125~170 | 125~170 | — |
| 12Cr2MoG | 450~600 | 280 | 22 | 20 | 40 | 27 | 125~180 | 125~180 | — |
| 12Cr1MoVG | 470~640 | 255 | 21 | 19 | 40 | 27 | 135~195 | 135~195 | — |
