Round Pipe → pipe inspection → NDT inspection MPI → End Threading → Thread Inspection → Coupling Threading lnspection → NDT inspection MPI ( coupling) → Phosphating (for coupling) → Coupling power Make up → Hydrostatic test → Drift test → Doping and Protectors Application → Coating → Measurement of Length and Weight → Colour Identification → Marking → Packing → Warehousing
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ASTM /ASME |
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Product Name |
Executive Standard |
Dimension (mm) |
Steel Code / Steel Grade |
|
CASING AND TUBING |
API 5CT |
Casing:OD 4 1/2"- 20" (114.3mm-508mm) Tubing:OD 2 3/8" - 4 1/2" (60.3mm-114.30mm) WT: 0. 205"- 0.635" |
H-40, J55, K-55, N-80, C-75, L-80, C-90, T-95, P110, Q-125
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Petroleum and natural gas industries - Steel pipes for use as casing or tubing for wells |
SY/T 6194 / BS EN ISO 11960 / NF M87-207 |
Casing:OD 4 1/2"- 20" (114.3mm-508mm) Tubing:OD 2 3/8" - 4 1/2" (60.3mm-114.30mm) WT: 0. 205"- 0.635" |
H-40, J55, K-55, N-80, N80Q, C-75, L-80, C-90, T-95, P110, Q-125 |
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SEAMLESS STEEL OIL WELL CASING, TUBING AND DRILL PIPE
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JIS G3439 |
Casing:OD 4 1/2"- 20" (114.3mm-508mm) Tubing:OD 2 3/8" - 4 1/2" (60.3mm-114.30mm) WT: 0. 205"- 0.635" |
STO-H, STO-J, STO-D, STO-E |
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Grade |
Colour Coding (Painted Outside) |
|
H-40 |
Black |
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J-55 or K-55 |
Green |
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N-80 |
Red |
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M-65 or L-80 |
Red with one Brown Band |
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L-80 Type 9CR |
Red with two Yellow Bands |
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L-80 Type 13CR |
Red with one Yellow Band |
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C-90 Type 1 |
Purple |
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C-90 Type 2 |
Purple with one Yellow Band |
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T-95 Type 1 |
Silver |
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T-95 Type 2 |
Silver with one Yellow Band |
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C-95 |
Brown |
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P-110 |
White |
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Q-125 Type 1 |
Orange |
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Q-125 Type 2 |
Orange with one Yellow Band |
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Q-125 Type 3 |
Orange with one Green Band |
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Q-125 Type 4 |
Orange with one Brown Band |
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Specification |
API 5CT |
|
Grades |
K55, N80, L80, C95, P110, Chrome, J55(Modified), J55 (API), PS80 |
|
Special Grades |
For sour services and for deep well with high collapse properties |
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Dimensions |
OD 4" - 26" WT - 0.2 -0.5" |
|
Length range |
1, 2 or 3 |
|
Thread connections |
API (STC and LTC), BTC, extreme line, integral connections, integral metal seal connections, threaded and coupled connections and integral thread seal connections, etc. |
|
Specification |
API 5CT |
|
Grades |
J55 (API) J55(Modified), N80, L80, L80 13Cr, P110, Q125, H40 (API) |
|
Thread connections |
API 5B - Last Edition or Premium, EUE, NUE, special seal, metal-to-metal seal and VAGT |
