Split Integral Type Annular Manifold For Oilfield High Pressure Piping Systems

1. Product Overview

The Annular Manifold is a high-performance pipeline assembly specifically designed for oilfield high-pressure fluid delivery systems. It is widely used in discharge lines, cementing mud lines, well testing lines, fracturing lines, and other high-pressure fluid transmission applications.

The annular manifold is composed of swivel joints and pup joints (straight pipes) , forming a flexible ring-shaped pipeline that can be easily stacked, transported, and stored. Its modular design offers excellent flexibility, impact resistance, vibration resistance, and high flow capacity, making it the ideal solution for temporary and permanent high-pressure piping systems in the oil and gas industry.

Our annular manifolds are manufactured from high-strength alloy steel with precision machining, heat treatment, and strict quality control. All products are designed to meet API standards and are fully interchangeable with major international brands.

Key features at a glance:

Flexible ring-shaped design for easy stacking and storage

Excellent impact and vibration resistance

High flow capacity with minimal pressure drop

Available in split type and integral type

Standard configurations with Type 50 swivel joints (Type 10 optional)

Pressure range: 5,000 – 20,000 PSI

Size range: 2″ – 3″

Easy transport and rapid installation

2. Product Types

There are two types of annular manifolds.

2.1 Split-type Annular Manifold

The split-type annular manifold is composed of swivel joints and pup joints (union-type pup joints) connected via hammer unions. Each component can be independently disassembled and stacked for compact storage and convenient transportation, while enabling flexible and rapid assembly on site.

Typical configurations:

2″ split-type annular manifold with Type 50 swivel joints

3″ split-type annular manifold with Type 50 swivel joints

Custom configurations with Type 10 swivel joints available upon request

2.2 Integral Annular Manifold

The integral annular manifold features an integral forged or welded construction with a single hammer union connection, which minimizes potential leak points. Compared with the split-type design, the integral type offers lighter weight, smoother rotation, and safer operation.

Key benefits:

Reduced potential leak paths

Lighter weight for easier handling

Smoother rotation for better maneuverability

Enhanced safety in critical high-pressure applications

3. Technical Specifications

End connection type:

M × F: Male thread × Female thread (one end male, one end female)

Swivel joint options:

Type 10 Swivel Joint – Standard configuration

Type 50 Swivel Joint – Optional upgrade

Custom sizes, configurations, and pressure ratings available upon request. We also offer OEM/ODM services.

4. Applications

Annular manifolds are essential pipeline assemblies for high-pressure fluid handling in the oil and gas industry:

Discharge Lines – High-pressure pump discharge and flowback lines

Cementing Operations – Cement slurry delivery lines on cementing trucks and service rigs

Well Testing – Test lines for well evaluation and production testing

Fracturing Operations – Fracturing fluid delivery lines and manifolds

Drilling Mud Lines – Mud circulation and transfer lines

Choke & Kill Lines – Well control systems

Acidizing – Acid treatment lines

Temporary Field Piping – Rapidly deployed piping systems for various well service operations

5. Packaging & Shipping

Packaging: Standard export wooden cases / polywood cases, with protective wrapping and component segregation to prevent damage during ocean freight

Split-type: Disassembled for compact packaging and reduced shipping volume

Integral-type: Shipped assembled, securely braced in crates

Shipping: FOB China port (Qingdao/Tianjin/Shanghai), air freight, or door-to-door delivery available

Lead time: 15–30 days depending on order quantity and specifications

Documentation: Mill test certificates, pressure test reports, and dimensional inspection reports included