Loading Port:Tianjin
Payment Terms:TT OR LC
Min Order Qty:1000 m.t.
Supply Capability:20000 m.t./month
Integral-joint tubing upsetting at one end, external threading, and external upsetting at the other end, internal threading. API integral-joint tubing is on the market in OD dimensions of 1.315 to a couple of.063 inch.
API integral-joint tubing provides 10-round form together with a joint strength which is less than the body minimum yield, this reduces its use.
The small OD of integral-joint tubing enables its use inside of larger tubing strings or inside of wells as unloading or vent strings.
The couplings will need to meet all the minimum specifications outlined in API Spec. 5CT. API Spec. 5B3 and API RP 5B14 cover threading, gauging, and thread inspection.
| Parameters | Value | |
|---|---|---|
| Material | J55, K55, N80, N80Q, L80, P110, other grade available as your requirement | |
| Outer Diameter | 2-3/8"~4-1/2" (73.02~114.3mm) | |
| Wall Thickness | 4.83~16mm | |
| Forms of Thread | EUE, NUE and Integral-joint | |
| Length Range | R1(20~24ft), R2(28~32ft) | |
| MTR | accordance with API Specification 5CT |
| Parameters | Value | |
|---|---|---|
| Outside diameter | +-0.031 inch (0.79mm) | |
| Wall thickness | -12.5%, positive deviations are limited by pipe weight | |
| Weight Deviation | +6.5% /-3.5% |
| Grade | Tensile Strength (PSI/MPa) | Yield Strenght (PSI/MPa) | ||
|---|---|---|---|---|
| H-40 | No less than 60000(414) | Between 40000 (276) ~ 80000 (552) | ||
| J-55 | No less than 75000 (517) | Between 55000 (379) ~ 80000 (552) | ||
| N-80 | No less than 100000 (689) | Between 80000 (552) ~ 110000 (758) | ||
| P-110 | No less than 125000 (862) | Between 110000 (758) ~ 140000 (965) |
Physical properties are checked and each length hydrostatically tested, normally to only 3,000 psi in the plain end (unthreaded) condition. The following are also checked:
Dimensions
Weights
Straightness
Lengths
Part of this inspection is to drift all lengths.
Despite all the American Petroleum Institute (API) specifications and testing, some tubing defects are still found after delivery; thus, some operators do further inspection.
Size and surface inspection
NDT and pressure test and third party certication
Hydrostatic
Drifting test
Physical and chemicail analysis
Hardness and pressure test.
Electromagnetic
Magnetic particle
Ultrasonic
| sizes | OD D mm | weight | wt t mm | Type of end | |||||||||||
| 1 | 2 | NU kg/m | EU kg/m | IJ kg/m | |||||||||||
| NU | EU | IJ | |||||||||||||
| H40 | J55 | L80 | N80 1/Q | C90 | T95 | P110 | |||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| 2-3/82-3/8 2-3/8 2-3/8 2-3/8 | 4.004.60 5.80 6.60 7.35 | -4.70 5.95 - 7.45 | – - - - | 60.3260.32 60.32 60.32 60.32 | 5.956.85 8.63 9.82 10.94 | -6.99 8.85 - 11.09 | – - - - | 4.244.83 6.45 7.49 8.53 | PUPNU - - - | PNPNU - - - | PNPNU PNU P PU | PNPNU PNU - - | PNPNU PNU P PU | PNPNU PNU P PU | -PNU PNU - - |
| 2-7/82-7/8 2-7/8 2-7/8 2-7/8 2-7/8 | 6.407.80 8.60 9.35 10.50 11.50 | 6.507.90 8.70 9.45 - - | – - - - - | 73.0273.02 73.02 73.02 73.02 73.02 | 9.5211.61 12.80 13.91 15.63 17.11 | 9.6711.76 12.95 14.06 - - | – - - - - | 5.517.01 7.82 8.64 9.96 11.18 | PNU- - - - - | PNU- - - - - | PNUPNU PNU PU P P | PNUPNU PNU - - - | PNUPNU PNU PU P P | PNUPNU PNU PU P P | PNUPNU PNU - - - |
| 3-1/23-1/2 3-1/2 3-1/2 3-1/2 3-1/2 3-1/2 | 7.709.20 10.20 12.70 14.30 15.50 17.00 | -9.30 - 12.95 - - - | – - - - - - | 88.9088.90 88.90 88.90 88.90 88.90 88.90 | 11.4613.69 15.18 18.90 21.28 23.07 25.30 | -13.84 - 19.27 - - - | – - - - - - | 5.496.45 7.34 9.52 10.92 12.09 13.46 | PNPNU PN - - - - | PNPNU PN - - - - | PNPNU PN PNU P P P | PNPNU PN PNU - - - | PNPNU PN PNU P P P | PNPNU PN PNU P P P | -PNU - PNU - - - |
| 44 4 4 4 4 | 9.5010.70 13.20 16.10 18.90 22.20 | -11.00 - - - - | – - - - - | 101.60101.60 101.60 101.60 101.60 101.60 | 14.14- 19.64 23.96 28.13 33.04 | -16.37 - - - - | – - - - - | 5.746.65 8.38 10.54 12.70 15.49 | PNPU - - - - | PNPU - - - - | PNPU P P P P | PNPU - - - - | PNPU P P P P | PNPU P P P P | – - - - - |
| 4-1/24-1/2 | 12.6015.20 | 12.75- | – | 114.30114.30 | 18.7522.62 | 18.97- | – | 6.888.56 | PNU- | PNU- | PNUP | PNU- | PNUP | PNUP | – |
| 4-1/24-1/2 4-1/2 4-1/2 4-1/2 | 17.0018.90 21.50 23.70 26.10 | – - - - | – - - - | 114.30114.30 114.30 114.30 114.30 | 25.3028.13 32.00 35.27 38.84 | – - - - | – - - - | 9.6510.92 12.70 14.22 16.00 | – - - - | – - - - | PP P P P | – - - - | PP P P P | PP P P P | – - - - |
| P——Plain end;N—Non-upset threaded and coupled;U—External upset threaded and coupled;I—insert joint. | |||||||||||||||
