1. Product Overview
Pup joints are short high-pressure flowline sections used in oil drilling and production, cementing and fracturing, testing operations, and high-pressure fluid-transfer systems.
End connections can be threaded, flanged, union-end, or customized to match the line layout. Specifications cover 1 in to 6 in, with rated working pressure from 2,000 psi to 20,000 psi.
Pup joints are available for standard, low-temperature and sour service. For sour service, wetted metallic materials are selected for the stated environment in accordance with NACE MR0175/ISO 15156; the selected ends must match the adjacent flowline system.
The series includes integral, pressure-seal-thread, non-pressure-seal-thread (NPST), integral-flanged and welded-flanged pup joints.
2. Design Features
Pup joints are manufactured and tested to the approved product specification. API 6A flanged interfaces, where supplied, follow the applicable API Spec 6A dimensional requirements; this does not imply API Monogram eligibility for the complete pup joint.
The body is made from alloy steel and heat-treated to the specified mechanical-property and impact-toughness requirements for rated pressure-containing service.
Integral and union-end configurations reduce the number of separate pressure-containing joints; the selected union, seal and make-up procedure must match the adjacent flowline.
The compact connection design supports secure make-up and quick removal during frequent field assembly and dismantling.
Multiple sealing structures and high-precision machining help improve overall flowline sealing performance.
3. Pup Joint Main Technical Parameters
1. Hammer-Union-End Pup Joint (Pressure-Seal-Thread Pup Joint, Non-Pressure-Seal-Thread (NPST) Pup Joint, and Integral Pup Joint). CWP: 6,000 psi to 20,000 psi. Nominal Bore: 1″ to 5″. Rated Operating-Temperature Range*: -29 °C to 121 °C.
| Pressure-Seal-Thread Pup Joint | |||||
|---|---|---|---|---|---|
| Model | Nominal Size | Cold Working Pressure | Length (mm) | Connection Type | Service |
| 2" Fig 602 Pressure-Seal Thread, 6,000 psi | 2″ | 6,000 psi | 500, 1000, 1500 2000, 2500, 3000 4000, 5000, 6000 | Fig 602 (M×F) | Standard |
| 2" Fig 602 Pressure-Seal Thread, 6,000 psi | Fig 602 (M×M) | ||||
| 2" Fig 602 Pressure-Seal Thread, 6,000 psi | Fig 602 (F×F) | ||||
| 3" Fig 602 Pressure-Seal Thread, 6,000 psi | 3″ | Fig 602 (M×F) | |||
| 3" Fig 602 Pressure-Seal Thread, 6,000 psi | Fig 602 (M×M) | ||||
| 3" Fig 602 Pressure-Seal Thread, 6,000 psi | Fig 602 (F×F) | ||||
| 4" Fig 602 Pressure-Seal Thread, 6,000 psi | 4″ | Fig 602 (M×F) | |||
| 4" Fig 602 Pressure-Seal Thread, 6,000 psi | Fig 602 (M×M) | ||||
| 4" Fig 602 Pressure-Seal Thread, 6,000 psi | Fig 602 (F×F) | ||||
| 2" Fig 1002 Pressure-Seal Thread, 10,000 psi | 2″ | 10,000 psi | Fig 1002 (M×F) | ||
| 2" Fig 1002 Pressure-Seal Thread, 10,000 psi | Fig 1002 (M×M) | ||||
| 2" Fig 1002 Pressure-Seal Thread, 10,000 psi | Fig 1002 (F×F) | ||||
| 3" Fig 1002 Pressure-Seal Thread, 10,000 psi | 3″ | Fig 1002 (M×F) | |||
| 3" Fig 1002 Pressure-Seal Thread, 10,000 psi | Fig 1002 (M×M) | ||||
| 3" Fig 1002 Pressure-Seal Thread, 10,000 psi | Fig 1002 (F×F) | ||||
| 2" Fig 1502 Pressure-Seal Thread, 15,000 psi | 2″ | 15,000 psi | Fig 1502 (M×F) | ||
| 2" Fig 1502 Pressure-Seal Thread, 15,000 psi | Fig 1502 (M×M) | ||||
| 2" Fig 1502 Pressure-Seal Thread, 15,000 psi | Fig 1502 (F×F) | ||||
| 3" Fig 1502 Pressure-Seal Thread, 15,000 psi | 3″ | Fig 1502 (M×F) | |||
| 3" Fig 1502 Pressure-Seal Thread, 15,000 psi | Fig 1502 (M×M) | ||||
| 3" Fig 1502 Pressure-Seal Thread, 15,000 psi | Fig 1502 (F×F) | ||||
| NPST Pup Joint | |||||
|---|---|---|---|---|---|
| Model | Nominal Size | Cold Working Pressure | Length (mm) | Connection Type | Service |
| 2" Fig 602, 6,000 psi, NPST | 2″ | 6,000 psi | 500, 1000, 1500 2000, 2500, 3000 4000, 5000, 6000 | Fig 602 (M×F) | Standard |
| 2" Fig 602, 6,000 psi, NPST | Fig 602 (M×M) | ||||
| 2" Fig 602, 6,000 psi, NPST | Fig 602 (F×F) | ||||
| 3" Fig 602, 6,000 psi, NPST | 3″ | Fig 602 (M×F) | |||
| 3" Fig 602, 6,000 psi, NPST | Fig 602 (M×M) | ||||
| 3" Fig 602, 6,000 psi, NPST | Fig 602 (F×F) | ||||
| 4" Fig 602, 6,000 psi, NPST | 4″ | Fig 602 (M×F) | |||
| 4" Fig 602, 6,000 psi, NPST | Fig 602 (M×M) | ||||
| 4" Fig 602, 6,000 psi, NPST | Fig 602 (F×F) | ||||
| 2" Fig 1002, 10,000 psi, NPST | 2″ | 10,000 psi | Fig 1002 (M×F) | ||
| 2" Fig 1002, 10,000 psi, NPST | Fig 1002 (M×M) | ||||
| 2" Fig 1002, 10,000 psi, NPST | Fig 1002 (F×F) | ||||
| 2" Fig 1502-TR100×12, 10,000 psi, NPST | 1000 | Fig 1502-TR100×12 (M×M) | |||
| 2" TR100×12, 10,000 psi, NPST | 1500 | TR100×12(M×M) | |||
| 2" TR100×12, 10,000 psi, NPST | 2000 | TR100×12(M×F) | |||
| 3" Fig 1002, 10,000 psi, NPST | 3″ | Fig 1002 (M×F) | |||
| 3" Fig 1002, 10,000 psi, NPST | Fig 1002 (M×M) | ||||
| 3" Fig 1002, 10,000 psi, NPST | Fig 1002 (F×F) | ||||
| 2" Fig 1502, 15,000 psi, NPST | 2″ | 15,000 psi | 500, 1000, 1500 2000, 2500, 3000 4000, 5000, 6000 | Fig 1502 (M×F) | |
| 2" Fig 1502, 15,000 psi, NPST | Fig 1502 (M×M) | ||||
| 2" Fig 1502, 15,000 psi, NPST | Fig 1502 (F×F) | ||||
| 2" TR100×12, 15,000 psi, NPST | 1000, 1500, 2000 | TR100×12(F×F) | |||
| 3" Fig 1502, 15,000 psi, NPST | 3″ | Fig 1502 (M×F) | |||
| 3" Fig 1502, 15,000 psi, NPST | Fig 1502 (M×M) | ||||
| 3" Fig 1502, 15,000 psi, NPST | Fig 1502 (F×F) | ||||
| H2S Service | |||||
| 2" Fig 602 NACE, 6,000 psi, NPST | 2″ | 6,000 psi | 500, 1000, 1500 2000, 2500, 3000 4000, 5000, 6000 | Fig 602 (M×F) | H2S |
| 2" Fig 602 NACE, 6,000 psi, NPST | Fig 602 (M×M) | ||||
| 2" Fig 602 NACE, 6,000 psi, NPST | Fig 602 (F×F) | ||||
| 3" Fig 602 NACE, 6,000 psi, NPST | 3″ | Fig 602 (M×F) | |||
| 3" Fig 602 NACE, 6,000 psi, NPST | Fig 602 (M×M) | ||||
| 3" Fig 602 NACE, 6,000 psi, NPST | Fig 602 (F×F) | ||||
| 2" Fig 1502 NACE, 10,000 psi, NPST | 2″ | 10,000 psi | Fig 1502 (M×F) | ||
| 2" Fig 1502 NACE, 10,000 psi, NPST | Fig 1502 (M×M) | ||||
| 2" Fig 1502 NACE, 10,000 psi, NPST | Fig 1502 (F×F) | ||||
| 3" Fig 1502 NACE, 10,000 psi, NPST | 3″ | Fig 1502 (M×F) | |||
| 3" Fig 1502 NACE, 10,000 psi, NPST | Fig 1502 (M×M) | ||||
| 3" Fig 1502 NACE, 10,000 psi, NPST | Fig 1502 (F×F) | ||||
| Integral Pup Joint | |||||
|---|---|---|---|---|---|
| Model | Nominal Size | Cold Working Pressure | Length (mm) | Connection Type | Service |
| 2" Fig 602, 6,000 psi | 2″ | 6,000 psi | 500, 600, 1000 1500, 2000, 2500 3000, 3500, 4000 | Fig 602 (M×F) | Standard |
| 2" Fig 602, 6,000 psi | Fig 602 (M×M) | ||||
| 2" Fig 602, 6,000 psi | Fig 602 (F×F) | ||||
| 3" Fig 602, 6,000 psi | 3″ | 500, 600, 1000 1500, 2000, 2500 3000 | Fig 602 (M×F) | ||
| 3" Fig 602, 6,000 psi | Fig 602 (M×M) | ||||
| 3" Fig 602, 6,000 psi | Fig 602 (F×F) | ||||
| 4" Fig 602, 6,000 psi | 4″ | 500, 1000, 1500 2000, 2500, 3000 | Fig 602 (M×F) | ||
| 4" Fig 602, 6,000 psi | Fig 602 (M×M) | ||||
| 4" Fig 602, 6,000 psi | Fig 602 (F×F) | ||||
| 2" Fig 1002, 10,000 psi | 2″ | 10,000 psi | 500, 1000, 1500 2000, 2500, 3000 3500, 4000 | Fig 1002 (M×F) | |
| 2" Fig 1002, 10,000 psi | Fig 1002 (M×M) | ||||
| 2" Fig 1002, 10,000 psi | Fig 1002 (F×F) | ||||
| 2" TR100×12, 10,000 psi | TR100X12(M×F) | ||||
| 2" TR100×12, 10,000 psi | TR100X12(M×M) | ||||
| 2" TR100×12, 10,000 psi | TR100X12(F×F) | ||||
| 3" Fig 1002, 10,000 psi | 3″ | 500, 1000, 1500 2000, 2500, 3000 | Fig 1002 (M×F) | ||
| 3" Fig 1002, 10,000 psi | Fig 1002 (M×M) | ||||
| 3" Fig 1002, 10,000 psi | Fig 1002 (F×F) | ||||
| 4" Fig 1002, 10,000 psi | 4″ | Fig 1002 (M×F) | |||
| 4" Fig 1002, 10,000 psi | Fig 1002 (M×M) | ||||
| 4" Fig 1002, 10,000 psi | Fig 1002 (F×F) | ||||
| 2" Fig 1502, 15,000 psi | 2″ | 15,000 psi | 300, 400, 500, 600 700, 800, 1000, 1200 1500, 1800, 2000 2500, 3000, 3500, 4000 | Fig 1502 (M×F) | |
| 2" Fig 1502, 15,000 psi | Fig 1502 (M×M) | ||||
| 2" Fig 1502, 15,000 psi | Fig 1502 (F×F) | ||||
| 3" Fig 1502, 15,000 psi | 3″ | 15,000 psi | 300, 400, 500, 600 1000, 1500, 1700 2000, 2500, 3000 | Fig 1502 (M×F) | |
| 3" Fig 1502, 15,000 psi | Fig 1502 (M×M) | ||||
| 3" Fig 1502, 15,000 psi | Fig 1502 (F×F) | ||||
| 4" Fig 1502, 15,000 psi | 4″ | 500, 1000, 1500 2000, 2500, 3000 | Fig 1502 (M×F) | ||
| 4" Fig 1502, 15,000 psi | Fig 1502 (M×M) | ||||
| 4" Fig 1502, 15,000 psi | Fig 1502 (F×F) | ||||
| 2" Fig 2002, 20,000 psi | 2″ | 20,000 psi | 200, 300, 400 500, 600, 700 800, 1000, 1500 | Fig 2002 (M×F) | |
| 2" Fig 2002, 20,000 psi | Fig 2002 (M×M) | ||||
| 2" Fig 2002, 20,000 psi | Fig 2002 (F×F) | ||||
| 3" Fig 2002, 20,000 psi | 3″ | 500, 800, 1000 1500, 2000, 2500 | Fig 2002 (M×F) | ||
| 3" Fig 2002, 20,000 psi | Fig 2002 (M×M) | ||||
| 3" Fig 2002, 20,000 psi | Fig 2002 (F×F) | ||||
| H2S Service | |||||
| 2" Fig 602 NACE, 6,000 psi | 2″ | 6,000 psi | 500, 1000, 1500 2000, 2500, 3000 3500, 4000 | Fig 602 (M×F) | H2S |
| 2" Fig 602 NACE, 6,000 psi | Fig 602 (M×M) | ||||
| 2" Fig 602 NACE, 6,000 psi | Fig 602 (F×F) | ||||
| 3" Fig 602 NACE, 6,000 psi | 3″ | 300, 400, 500, 1000, 1500 2000, 2500, 3000 | Fig 602 (M×F) | ||
| 3" Fig 602 NACE, 6,000 psi | Fig 602 (M×M) | ||||
| 3" Fig 602 NACE, 6,000 psi | Fig 602 (F×F) | ||||
| 4" Fig 602 NACE, 6,000 psi | 4″ | 500, 1000, 1500 2000, 2500, 3000 | Fig 602 (M×F) | ||
| 4" Fig 602 NACE, 6,000 psi | Fig 602 (M×M) | ||||
| 4" Fig 602 NACE, 6,000 psi | Fig 602 (F×F) | ||||
| 2" Fig 1002 NACE, 7,500 psi | 2″ | 7,500 psi | 500, 1000, 1500 2000, 2500, 3000 3500, 4000 | Fig 1002 (M×F) | |
| 2" Fig 1002 NACE, 7,500 psi | Fig 1002 (M×M) | ||||
| 2" Fig 1002 NACE, 7,500 psi | Fig 1002 (F×F) | ||||
| 3" Fig 1002 NACE, 7,500 psi | 3″ | 500, 1000, 1500 2000, 2500, 3000 | Fig 1002 (M×F) | ||
| 3" Fig 1002 NACE, 7,500 psi | Fig 1002 (M×M) | ||||
| 3" Fig 1002 NACE, 7,500 psi | Fig 1002 (F×F) | ||||
| 4" Fig 1002 NACE, 7,500 psi | 4″ | Fig 1002 (M×F) | |||
| 4" Fig 1002 NACE, 7,500 psi | Fig 1002 (M×M) | ||||
| 4" Fig 1002 NACE, 7,500 psi | Fig 1002 (F×F) | ||||
| 2" Fig 1502 NACE, 10,000 psi | 2″ | 10,000 psi | 700, 1000, 1500 2000, 2500, 3000 3500, 4000 | Fig 1502 (M×F) | |
| 2" Fig 1502 NACE, 10,000 psi | Fig 1502 (M×M) | ||||
| 2" Fig 1502 NACE, 10,000 psi | Fig 1502 (F×F) | ||||
| 3" Fig 1502 NACE, 10,000 psi | 3″ | 500, 1000, 1500 2000, 2500, 3000 | Fig 1502 (M×F) | ||
| 3" Fig 1502 NACE, 10,000 psi | Fig 1502 (M×M) | ||||
| 3" Fig 1502 NACE, 10,000 psi | Fig 1502 (F×F) | ||||
| 4" Fig 1502 NACE, 10,000 psi | 4″ | Fig 1502 (M×F) | |||
| 4" Fig 1502 NACE, 10,000 psi | Fig 1502 (M×M) | ||||
| 4" Fig 1502 NACE, 10,000 psi | Fig 1502 (F×F) | ||||
| 2" Fig 2002 NACE, 15,000 psi | 2″ | 15,000 psi | 500, 1000, 1500 2000, 2500, 3000 3500, 4000 | Fig 2002 (M×F) | |
| 2" Fig 2002 NACE, 15,000 psi | Fig 2002 (M×M) | ||||
| 2" Fig 2002 NACE, 15,000 psi | Fig 2002 (F×F) | ||||
| 3" Fig 2002 NACE, 15,000 psi | 3″ | 500, 1000, 1500 2000, 2500, 3000 | Fig 2002 (M×F) | ||
| 3" Fig 2002 NACE, 15,000 psi | Fig 2002 (M×M) | ||||
| 3" Fig 2002 NACE, 15,000 psi | Fig 2002 (F×F) | ||||
2. Flanged Pup Joint (Integral and Welded Flanged Types). Displayed Rated Working Pressure: 5,000 psi to 15,000 psi for integral types and 5,000 psi to 10,000 psi for welded types. Nominal Bore: 2 1/16″ to 4 1/16″. Material Class EE only where specified and supported by the ordered documentation. Rated Operating-Temperature Range*: -29 °C to 121 °C.
| Integral Flanged Pup Joint | ||||
|---|---|---|---|---|
| Model | Nominal Size | Rated Working Pressure | Length L (mm) | Ring Gasket No. |
| 2 1/16", 5,000 psi | 2 1/16″ | 5,000 psi | 500, 1000, 1500 2000, 2500, 3000 | R24 |
| 2 9/16", 5,000 psi | 2 9/16″ | R27 | ||
| 3 1/8", 5,000 psi | 3 1/8″ | R35 | ||
| 4 1/16", 5,000 psi | 4 1/16″ | R39 | ||
| 2 1/16", 10,000 psi | 2 1/16″ | 10,000 psi | BX152 | |
| 2 9/16", 10,000 psi | 2 9/16″ | BX153 | ||
| 3 1/16", 10,000 psi | 3 1/16″ | BX154 | ||
| 4 1/16", 10,000 psi | 4 1/16″ | BX155 | ||
| 2 1/16", 15,000 psi | 2 1/16″ | 15,000 psi | BX152 | |
| 2 9/16", 15,000 psi | 2 9/16″ | BX153 | ||
| 3 1/16", 15,000 psi | 3 1/16″ | BX154 | ||
| 4 1/16", 15,000 psi | 4 1/16″ | BX155 | ||
| Welded Flanged Pup Joint | ||||
|---|---|---|---|---|
| Model | Nominal Size | Rated Working Pressure | Length L (mm) | Ring Gasket No. |
| 2 1/16", 5,000 psi | 2 1/16″ | 5,000 psi | 500, 1000, 1500 2000, 2500, 3000 | R24 |
| 2 9/16", 5,000 psi | 2 9/16″ | R27 | ||
| 3 1/8", 5,000 psi | 3 1/8″ | R35 | ||
| 4 1/16", 5,000 psi | 4 1/16″ | R39 | ||
| 2 1/16", 10,000 psi | 2 1/16″ | 10,000 psi | BX152 | |
| 2 9/16", 10,000 psi | 2 9/16″ | BX153 | ||
| 3 1/16", 10,000 psi | 3 1/16″ | BX154 | ||
| 4 1/16", 10,000 psi | 4 1/16″ | BX155 | ||
4. Operation and Maintenance Notes
Before use, check the nameplate information and confirm that the pressure rating, specification, temperature range, and connection type match the field pup joint / flowline system.
Before service and after dismantling or repair, perform hydrostatic testing and seal inspection according to operating procedures. Put the pup joint into high-pressure service only after confirming there is no leakage.
During service, regularly inspect wall thickness, sealing faces, and connection areas. Replace the pup joint promptly if wear, erosion, or insufficient effective wall thickness is found.
Avoid impact, rain exposure, and contact with corrosive media during transportation and storage. Keep products clean and dry, and manage them by specification.
* Actual temperature capability depends on the documented material, elastomer, lubricant and ordered service configuration.
