    | ||||
|
Application: Used as Walls Structural Retainers and Screen Pipes for Oil, Gas and Water Wells
Specification: OD: 50mm - 500mm
WT: less than 20mm
LENGTH: less than 15m
Slot&Holes Specification: as customer require
Standard & Grade: API , API5CT J55/K55/N80/C75/L80/C90/T95/Q125
Process Type: Seamless (SMLS), Electric Resistance Welded (ERW)
End: Plain, Beveled, Square Cut, With LTC/STC/BTC/VAM Connection
Surface: Anti-corrosion&water Painting
Packing: Protection Caps in Both Ends, Waterproof Paper Wrapped
Production Process of API Slotted Casing
Specification of API Slotted Casing
OD: 50mm - 500mm
WT: less than 20mm
LENGTH: less than 15m
Slot&Holes Specification: as customer require
Technical Data of API Slotted Casing
| Standard | Grade |
Chemical compositions（％） |
|||||||||
|
API SPEC 5CT |
J55 |
C | Si | Mn | P | S | Cr | Ni | Cu | Mo | V |
| K55 |
0.34～0.39 |
0.20～0.35 |
1.25～1.50 |
≤0.020 |
≤0.015 |
≤0.15 |
≤0.20 |
≤0.20 |
/ | / | |
|
N80 |
0.34～0.38 |
0.20～0.35 |
1.45～1.70 |
≤0.020 |
≤0.015 |
≤0.15 |
/ | / | / |
0.11～0.16 |
|
|
L80 |
0.15～0.22 |
≤1.00 |
0.25～1.00 |
≤0.020 |
≤0.010 |
12.0～14.0 |
≤0.20 |
≤0.20 |
/ | / | |
|
P110 |
0.26～0.395 |
0.17～0.37 |
0.40～0.70 |
≤0.020 |
≤0.010 |
0.80～1.10 |
≤0.20 |
≤0.20 |
0.15～0.25 |
≤0.08 | |
| Grade | Type |
Total elongation under load (%) |
Yield strength (min) |
Yield strength (max) |
Tensile strength min Mpa |
Hardness Max (HRC) |
Hardness Max(HBW) |
| J55 | - |
0.5 |
379 | 552 | 517 | - | - |
| K55 | - |
0.5 |
379 | 552 | 655 | - | - |
| N80 | 1 |
0.5 |
552 | 758 | 689 | - | - |
| N80 | Q |
0.5 |
552 | 758 | 689 | - | - |
| L80 | 1 |
0.5 |
552 | 655 | 655 | 23 | 241 |
|
L80 |
9Cr |
0.5 |
552 | 655 | 655 | 23 | 241 |
|
L80 |
13Cr |
0.5 |
552 | 655 | 655 | 23 | 241 |
| C90 | - |
0.5 |
621 | 724 | 689 | 25.4 | 255 |
| C95 | - |
0.5 |
655 | 758 | 724 | - | - |
| T95 | - | 0.5 | 655 | 758 | 724 | 25.4 | 255 |
| P110 | - | 0.6 | 758 | 965 | 862 | - | - |
| Q125 | All | 0.65 | 862 | 1034 | 931 | - | - |
Surface of API Slotted Casing
Anti-corrosion and water Painting
Packing of API Slotted Casing
Sea worth packing according to the API specifications
Standard export bundle wrapped with strong steel strip
Product Advantages of API Slotted Casing
1. Good verticality of cutting edge, smooth cutting edge, no burr, even cutting seam.
2. Large overflow area, 27/8 "screen with 300 slits /1.5m, 2.4 times larger than the overflow area of tubing of the same specification.
3. The anticorrosion treatment improves the corrosion resistance and wear resistance of the screen pipe, and can extend its underground working life.
4. The slotted pipe is processed by J55 or N80 oil casing body, with high strength and not easy deformation.