The OCTG (Oil Country Tubular Goods) pup joint is a versatile pipe component that can be cut to various lengths to create a casing string of the precise total length required for specific applications.
Pup joints come in two primary forms: flange connections and threaded ends, depending on how they are connected to the casing string. The threaded variant is further classified into two types: one featuring male threads on both ends and the other with a combination of male and female threads at each end. Additionally, pup joints can be categorized based on their usage into two main types: production tubing joints and pipe casing joints.
Performance Characteristics of OCTG Pup Joints
Mechanical Strength: The joint body is engineered to exhibit excellent mechanical strength and overall performance, ensuring reliability under demanding conditions.
Precision Machining: The threads are cut using CNC machines, which guarantees high precision and contributes to an extended lifespan of the joint.
Wear Resistance: The application of phosphate coating or copper plating enhances the joint’s wear resistance, providing durability in various environments.
Specifications of OCTG Pup Joints
Standards: Manufactured according to API Spec 5CT & 5B / ISO 11960.
Steel Grades: Available in J55, K55, N80, L80, P110, and C95.
Outside Diameter of Tubing Joints: Ranges from 2-3/8" (60.3 mm) to 4.5" (114.60 mm).
Pipe End Types: EUE (External Upset End) / NUE (Non-Upset End).
Outside Diameter of Casing Joints: Ranges from 4-1/2" (114.3 mm) to 20" (508 mm).
Thread Types: Available in BTC (Buttress Thread), LTC (Long Thread), and STC (Short Thread).
Lengths: Standard lengths include 2, 3, 4, 6, 8, 10, and 12 feet, with custom lengths available upon request.
Surface Treatment: Coated for enhanced protection.
Thread Protection: Each joint is equipped with a thread protector.
Packaging: Packed in wooden cases or pallets, or customized according to customer specifications.
Customization Options
We specialize in manufacturing bespoke pup joints for production tubing and wellbore casing to any length and in any steel grade. In addition to standard threads like LTC, STC, BTC, EUE, and NUE, we also offer joints with premium connections such as VAM, VAM Top, and New VAM, tailored to meet specific operational requirements.
By combining precision engineering with customizable options, our OCTG pup joints are designed to deliver exceptional performance and reliability in oil and gas applications.
