We provide users with a full selection of oil casing and tubing that meet all API SPEC 5CT standard steel grades and thread types. Our offerings include H40, J55, K55, L80 1/9Cr/13Cr, R95, N80 1/Q, C90, T95, C110, P110, and Q125 steel grades. Product sizes cover the entire range of API SPEC 5CT standard outer diameters, wall thicknesses, and all thread types.
API Series Casing
| OD (mm/in) | Wall Thickness (mm) | H40 | J55, K55 | L80-1, L80-9Cr, L80-13Cr, R95 | N80-1, N80Q | C90, T95 | C110 | P110 | Q125 | Standard |
|---|---|---|---|---|---|---|---|---|---|---|
| 114.30 (4-1/2″) | 5.21 | S | S | API SPEC 5CT | ||||||
| 5.69 | S/B | |||||||||
| 6.35 | S/L/B | L/B | L/B | L/B | L/B | |||||
| 7.37 | L/B | L/B | L/B | L/B | ||||||
| 8.56 | L/B | L/B | ||||||||
| 127.00 (5″) | 5.59 | S | ||||||||
| 6.43 | S/L/B | |||||||||
| 7.52 | S/L/B | L/B | L/B | L/B | L/B | L/B |
Legend:
S – Short round thread
L – Long round thread
B – Buttress thread