Product Category

Projects

Pup Joint

Standards: API 5CT and 5B J55,K55,N80-1,N80-Q,P110, C95

Sizes: Tubing Coupling : 2-3/8'' - 4-1/2'' Casing Couping : 4-1/2'' - 20' Length: 2, 3, 4, 6, 8, 10, 12 ft

Specification Range: 2-3/8INCH to 20INCH

Materials: J55, K55, N80, L80, C90,T95, P110 and Q125

T&C: EUE, NUE, STC, LTC, BTC and Premium connection

Type: PIN*PIN, PIN*BOX

Testing: NDT Etc Related Rules of API 5CT and 5B

Packing: By Bundles, Seaworthy Packing

Application: Connecting Two Oil Tubing or Casing Pipes

Perhaps you would like to contact us via email. Please click on the link below to send us an emailinfo@hnssd.com

Get A Quote

Leave Your Requirement Information

Product Detail
Specification
Standsrds
Packings
FAQ

Pup Joints

Pup joint is used be adjust height of tubing or casing strings or depth of down-hole tools, and these pup joints are made of seamless steel pipes. Pup joint can be available with tubing pup joint or casing pup joint, and material for pup joint can be avalialbe in J55, K55, N80, L80 or P110, sizes of tubing pup joint range from 2⅜¡± to 4½¡±, and casing pup joint range from 4½¡± to 13⅜¡±, thread of pup joint can be 8RD, 10RD or BTC, length of tubing pup joint are often offered in 2ft, 3ft, 4ft, 6ft, 8ft, 10ft and 12ft, length of pup joint for special purpose can be available as per order. Pup joints are machined with interchangeable Pin & Box thread on two ends or other configuration, one end is equipped with coupling, and another end is protected with closed end thread protector. Nominal weight of tubing pup joint is the same as tubing, and casing pup joint is the same as casing.

Tubing pup Joint

Tubing pup joints are desiged and manufactured as per API 5CT to be used be adjust height of tubings, and tubing pup joints are made of seamless steel tubings. Material grade of tubing pup joint can be avalialbe in J55, K55, N80, L80 or P110, sizes of tubing pup joint range from 2⅜¡± to 4½¡±, thread of pup joint can be 8RD, 10RD or BTC, and end connection types can be NUE and EUE. length of tubing pup joint are often offered in 2ft, 3ft, 4ft, 6ft, 8ft, 10ft and 12ft, length of pup joint for special purpose can be available as per order. Tubing pup joints are machined with interchangeable Pin & Box thread on two ends or other configuration, one end is equipped with coupling, and another end is protected with closed end thread protector. Nominal weight of tubing pup joint is the same as tubing. Tubing pup joints are internally and externally hydrostatic tested with tension and compression loads, and torque tested, electromagnetically inspected, pup joint is full-body drift and straightness visual inspected, and phosphated and dye-penetrant inspected. and finally painted by machine to ensure excellenct appearance. Finished tubing pup joints are often packed by steel belts in bundles, and then fixed in steel rack for easy transportation.

Casing pup joint

Casing pup joints are desiged and manufactured as per API 5CT to be used be adjust height of casings, and casing pup joints are made of seamless steel casings. Material grade of casing pup joint can be avalialbe in J55, K55, N80, L80 or P110, sizes of casing pup joint range from 4½¡± to 13⅜¡±, thread of pup joint can be 8RD, 10RD or BTC, length of tubing pup joint are often offered in 2ft, 3ft, 4ft, 6ft, 8ft, 10ft and 12ft, length of pup joint for special purpose can be available as per order. Casing pup joints are machined with interchangeable Pin & Box thread on two ends or other configuration, one end is equipped with coupling, and another end is protected with closed end thread protector. Nominal weight of casing pup joint is the same as casing. Casing pup joints are internally and externally hydrostatic tested with tension and compression loads, and torque tested, electromagnetically inspected, pup joint is full-body drift and straightness visual inspected, and phosphated and dye-penetrant inspected. and finally painted by machine to ensure excellenct appearance. Finished casing pup joints are often packed by steel belts in bundles, and then fixed in steel rack for easy transportation.

Features

Transportation or piping systems that carry fluids, slurries or gasses under pressure or vacuum at varying temperatures.

Reduction of vibration.

Dampen sound transmission.

Compensate movements due thermal changes, misalignments caused by wear, load stresses, settling of supporting foundations.

Molding production with long radius arch.

Standard measures (length).

Advantages

Easy installation, flanges can be rotated.

For installation with “torsional misalignments”.

Flanges are not in contact with medium, which enables lower grade material.

Galvanic surfaces/ coatings possible.

Gaskets can be eliminated.

Additional movement capabilities.

Self cleaning arch (no need filler material).

Economic.

SPECIFICATIONS
TUBING PUP JOINT	OD	GRADE	END TYPE	LENGTH(FT)
	2 3/8″	J/K/L/N/P	NUE/EUE	2/3/4/5/6/8/10/12
	2 7/8″	J/K/L/N/P	NUE/EUE	2/3/4/5/6/8/10/12
	3 1/2″	J/K/L/N/P	NUE/EUE	2/3/4/5/6/8/10/12
	4 1/2″	J/K/L/N/P	NUE/EUE	2/3/4/5/6/8/10/12

CASING PUP JOINT	OD	GRADE	END TYPE
	4 1/2″	J/K/L/N/P	LTC/STC/BTC
	5″	J/K/L/N/P	LTC/STC/BTC
	5 1/2″	J/K/L/N/P	LTC/STC/BTC
	6 5/8″	J/K/L/N/P	LTC/STC/BTC
	7″	J/K/L/N/P	LTC/STC/BTC
	7 5/8″	J/K/L/N/P	LTC/STC/BTC
	7 3/4″	J/K/L/N/P	LTC/STC/BTC
	8 5/8″	J/K/L/N/P	LTC/STC/BTC
	9 5/8″	J/K/L/N/P	LTC/STC/BTC
	10 3/4″	J/K/L/N/P	STC/BTC
	11 3/4″	J/K/L/N/P	STC/BTC
	13 3/8″	J/K/L/N/P	STC/BTC

Size / Thread	Weight*	Grades	Length	Surface treatment	Coupling
2 3/8″ EUE	4.7	J55 / L80/P110	R1/R2/R3	painting	C/W/N/S
2 7/8″ EUE	6.5	J55 / L80/P110	R1/R2/R3	painting	C/W/N/S
3 1/2″ EUE	9.3	J55 / L80/P110	R1/R2/R3	painting	C/W/N/S
4 1/2″ EUE	12.75	J55 / L80/P110	R1/R2/R3	painting	C/W/N/S
2 3/8″ NUE	4.6	J55 / L80/P110	R1/R2/R3	painting	C/W/N/S
2 7/8″ NUE	6.4	J55 / L80/P110	R1/R2/R3	painting	C/W/N/S
3 1/2″ NUE	9.2	J55 / L80/P110	R1/R2/R3	painting	C/W/N/S
4 1/2″ NUE	12.6	J55 / L80/P110	R1/R2/R3	painting	C/W/N/S

Standards of tubing pup Joint

Standard	Steel Grade	Yield Strength (MPA)		Tensile Strength (MPA)	Elongation
Standard	Steel Grade	min	max	min	Elongation
API 5CT	J55	379	552	517	0.5
API 5CT	N80	552	758	689	0.5

Standards of casing pup Joint

Grade	Yield Strength				Tensile Strength
	Min		Max		Min
	Psi	MPA	Psi	MPA	Psi	MPA
J55	55000	379	80000	552	75000	517
K55	55000	379	80000	552	95000	655
N80	80000	552	110000	758	100000	689
L80	80000	552	95000	655	95000	655
P110	110000	758	140000	965	125000	862

The outer surface shall be coated (painted) and marked according to API 5CT standard, bundled with wooden cases, pallets, steel belts or other packaging as required by customers.

What is OCTG and what are its main components?

OCTG stands for Oil Country Tubular Goods. It is a family of seamless or welded steel pipes specifically designed for use in oil and gas wells. OCTG is essential for drilling, completing, and producing from a well. The three primary components are:
Casing: The structural "backbone" of the well. It is run into the drilled hole to prevent the wellbore from collapsing and to isolate different underground formations (e.g., freshwater zones from oil/gas zones).
Tubing: The conduit placed inside the casing. It serves as the channel through which oil or gas is brought to the surface during production.
Drill Pipe: The heavy, thick-walled pipe used to transmit drilling fluid to the drill bit and to rotate the bit during the drilling process.

What steel grades do you supply, and what do they mean?

We supply a comprehensive range of API 5CT standard steel grades, each designed for specific well conditions. The grade indicates the minimum yield strength (in ksi) and the material's properties.
Group 1 (Standard Grades):
H40, J55, K55: General-purpose grades for shallow to medium-depth wells with low to moderate pressure. K55 is commonly used for surface casing.
Group 2 (Higher Strength):
N80 (Type 1 & 2): A versatile, high-strength grade suitable for a wide range of applications, including intermediate and production casing.
L80 (Type 1, 9Cr, 13Cr): Designed for sour service environments (containing H₂S). L80-13Cr offers superior corrosion resistance.
Group 3 (High Performance):
C90, T95: Used in high-pressure, high-temperature (HPHT) wells and sour service applications.
P110, Q125: High-strength grades for deep wells and high-pressure environments where maximum burst and collapse resistance are required.

What types of connections (threads) are available?

The connection is a critical component of any OCTG string. We offer both standard API connections and advanced Premium Connections.
API Connections:
Short Round Thread (STC): A simple, cost-effective connection for shallow wells.
Long Round Thread (LTC): Similar to STC but with a longer thread for slightly better performance.
Buttress Thread (BTC): Provides high tensile strength and is suitable for deeper, heavier wells.
Premium Connections (Non-API):
These are engineered for extreme conditions, offering superior gas-tight sealing, high tensile strength, and excellent fatigue resistance. They are essential for HPHT wells, deepwater applications, and complex well geometries. We can supply various premium connection types based on your specific project requirements.

How do you ensure the quality and integrity of the pipes?

We implement a rigorous multi-stage quality control process to ensure every pipe meets the required specifications:
Chemical Composition Analysis: Verifying the steel grade's elemental makeup.
Mechanical Property Testing: Including tensile, yield, hardness, and impact tests.
Hydrostatic Testing: Every pipe is pressure-tested to ensure it can withstand specified internal pressures without leaking.
Non-Destructive Testing (NDT): We utilize advanced NDT methods such as Ultrasonic Testing (UT) and Electromagnetic Testing (ET) to detect any internal or surface imperfections.
Dimensional Inspection: Precise measurement of outside diameter (OD), wall thickness, weight, and length.

What is your typical lead time and packaging for export?

Lead Time: For standard API grades and sizes, our lead time is typically 15-30 days after receiving the deposit and final order confirmation. For specialized grades or premium connections, the timeline may be longer.
Packaging: To ensure safe ocean transport, all OCTG products are securely packed. Threads are protected with steel or plastic protectors, and pipes are bundled with steel straps. We can also apply anti-corrosion oil or varnish and use wooden crates for extra protection as per customer requirements.

Prev : Tubing And Casing Coupling
Next : Pipe Spool
Tags : API 5CT pup joint , oil well pup joint , casing pup joint , tubing pup joint , J55 pup joint , K55 pup joint , N80 pup joint , L80 pup joint , P110 pup joint , Q125 pup joint , BTC pup joint , LTC pup joint , STC pup joint , EUE pup joint , NUE pup joint , perforated pup joint