API 5CT is the technical specification for OCTG tubing pipes which are used in the petroleum industry. API 5CT N80 includes N80-1 and N80-Q types. Tubing pipes sizes are between 60.3mm( 2 3/8’’) and 114.3 mm( 4 1/2’’).
Specification
| Standard | API 5CT latest edition |
| Grade | H40, J55, N80-1, N80-Q, R95, L80-1, C90, T95, P110 |
| Outer Diameter | 60.3 – 114.3 mm (from 2-3/8’’ to 4-1/2’’ ) |
| Length | R1, R2, R3 |
| Type | EUE, NU |
| Packing | Thread protector, black paint and bundling |
| Section Shape | Round |
| Place of Origin | China |
| Technique | Seamless hot rolled |
| Application | Oil and Gas field |
| Place of Origin | China |
| MOQ | 1 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) |
| Chemical Composition(%) | |||||||||
| Grade | C | Mn | Mo | Cr | Ni | Cu | P | S | Si |
| N80-1/N80Q | ≤0.03 | ≤0.03 | — | ||||||
| Mechanical properties | |||||
| Grade | Total elongation under load（%） | Yield strength（Mpa） | Tensile strength（Mpa） | Hardness （HRC） | Hardness （HBW） |
| N80-1/N80Q | 0.5/0.5 | 552~758 | 689 | — | — |
