API Pup Joint for Tubing and Casing

We are a professional manufacturer and supplier specializing in petroleum pipes conforming to API Spec 5CT standards.
Our product range includes various types of tubing and casing short joints, such as thickened tubing subs, standard tubing subs, and casing subs. We also offer double male subs, high-pressure short joints, tubing adapters, tubing reducers, and oil/casing thread protectors (also known as wire guards).

In addition, we provide custom machining services for special subs, couplings, and pipe fittings based on client-provided drawings.
Available steel grades include: J55, K55, N80, L80, and P110.

roduct Specifications

• Tubing Sub Size Range: 1.315" to 4-1/2" (33.4mm – 114.3mm)

• Casing Sub Size Range: 4-1/2" to 20" (114.3mm – 508mm)

Machining Capabilities

We offer multiple connection types, including:

• PIN × PIN (Double male thread sub)

• PIN × BOX (Male × Female connection)

• BOX × PIN (Female × Male connection)

• Flush joint subs for streamlined connections

Available lengths range from 2 feet to 20 feet.
Tubing subs can be manufactured with either EUE (External Upset End) or NUE (Non-Upset End) threading.

Thread Types Supported

• SC – Short Round Thread

• LTC – Long Round Thread

• BTC – Buttress Thread

All threading complies strictly with API 5CT and API 5B standards. Each product undergoes rigorous inspection before leaving the factory to ensure consistent quality and reliability.