Prefabricated Pipe Spools

The prefabricated components of a piping system are called spools. The spools consist of three components: Pipes, flanges, and fittings. The spools are assembled during fabrication and shipped pre-assembled to facilitate assembly with jacks, gauges, and other joining equipment. In short, the spools join long lengths of pipe with flanges at the ends and must be properly positioned to withstand the weight and force of the structure. Prefabricated Pipe Spools

The prefabricated coils are primarily made of stainless steel. Their good adhesion to steel provides superior long-term corrosion resistance and pipeline protection in a low-temperature environment. Higher adhesion properties ensure excellent cathodic dissolution resistance, which reduces the overall cost of cathodic protection during pipeline operation.

Shipbuilding and maintenance encompasses a wide range of projects and involves intensive piping to connect a variety of equipment and transport fluids and gases. Prefabricated pipe spools play an important role here. Prefabricated Pipe Spools

C&N is a professional supplier. We have the ability to provide prefabricated pipe spires, including pipes, fittings, and flanges, based on design drawings and requirements, and prefabricate them into “spires” suitable for on-site assembly. Prefabricated Pipe Spools

Features of Prefabricated Pipe Spools

• Welding method: Plasma welding
• Inspection: PT or RT & Pressure Test
• Custom made as per provided drawings

Pre-Fabrication Process

1. Engineering & Design

 Detailed isometric drawings, P&ID, and 3D models are created
Selection of materials, pipe sizes, and fittings
Weld mapping and non-destructive testing (NDT) planning

2. Material Procurement & Cutting

Pipes and fittings ,flanges are made according to project specifications
Precision cutting using CNC machines, saws, and plasma cutting

3. Welding & Assembly

Butt welding, socket welding, and TIG/MIG welding for strong joints
Flanges, elbows, tees, and valves are fitted as per design
Welding inspected using X-ray, ultrasonic, or dye penetration testing

4. Surface Treatment & Coating

Galvanization, painting, or powder coating for corrosion resistance
Internal lining (FBE, epoxy, rubber, or FRP) based on application

5,Testing & Quality Control

Hydrostatic pressure testing ensures leak-proof operation
Dimensional and alignment checks for precision
NDT (Radiography, UT, MPI) to detect welding defects

6. Packaging & Transportation

Pipe spools are labeled, bundled, and shipped to the installation site
Modular skid units can be transported for quick assembly

Advantages of pipe spools prefabrication:

Parts are designed as “components” and “sub-components” before they are needed, so they can be installed on demand instead of being manufactured on site. It is convenient for the coordination and control of quality, schedule and management in a fixed area, reduces the workload of on-site prefabrication and on-site installation, and greatly improves the installation, quality and schedule of the whole project. And craftsmen are less exposed to the more adverse working environment of a construction site, improving safety performance.