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Piping for Industrial Paint Circulation Systems

Industrial paint circulation systems deliver coatings from supply and mixing equipment to spray guns, robotic applicators and other precision painting equipment across manufacturing facilities. In high-throughput production environments, the quality of the piping system is critical because contamination, chemical seal degradation or fluid leakage can affect coating quality, equipment reliability and production continuity. Cenergy Offshore provides PreFiS® non-welded piping solutions for suitable industrial paint circulation applications, offering a metal-to-metal connection technology designed to address these challenges while simplifying installation.

Industrial Paint Circulation Piping Can Be Challenging

Industrial paint circulation systems must maintain coating quality while handling demanding chemical conditions and supporting uninterrupted production. Conventional welded connections and elastomer-sealed press fittings can introduce potential contamination, sealing and installation challenges that affect the reliability of the overall system.

Risk of Paint Contamination

Welding can generate internal weld slag, soot and carbon scale inside stainless steel pipework. These contaminants can enter the paint stream, potentially affecting surface finish quality and damaging or obstructing precision robotic applicators.

Chemical Degradation of Seals

Paint circulation systems may handle waterborne coatings, metallic paint formulations and aggressive solvents such as MEK, acetone and xylene. Exposure to incompatible chemicals can cause elastomeric O-rings to swell, degrade or lose their sealing performance, increasing the risk of leaks and air intrusion.

Internal Bore Obstructions

Internal weld beads can create irregularities inside the pipe, obstructing the flow path and interfering with cleaning projectiles used in automated pigging systems. This can complicate line cleaning and affect maintenance operations.

Hot-Work Risks in Paint Mixing Areas

Paint mixing rooms can contain flammable solvent vapours and require strict safety controls. Welding during installation or modification may require hot-work permits, additional precautions and plant shutdowns, making changes to existing piping networks more complicated.

Time-Consuming Installation and Inspection

Conventional welded connections involve pipe preparation, alignment, welding and inspection. Non-destructive testing and associated finishing activities can add time and cost, extending installation schedules and delaying commissioning.

Production Downtime and Quality Costs

A fluid leak, blocked nozzle or contamination event can interrupt a paint line and affect finished products. In high-throughput manufacturing environments, these disruptions can result in costly rework, equipment maintenance and lost production time.

PreFiS®: A Non-Welded Approach to Industrial Paint Circulation

PreFiS® provides a mechanical pipe-joining solution based on cold hydraulic axial swaging. Instead of relying on conventional welding or elastomeric O-rings to seal the connection, the system uses a mechanically formed metal-to-metal connection designed to provide sealing integrity without introducing welding-related contamination or rubber seal degradation concerns.

The connection is formed using a controlled hydraulic process, eliminating the need for welding at the joint. This offers an alternative for suitable paint circulation installations where internal cleanliness, chemical compatibility and reduced installation time are important considerations.

PreFiS® uses a patented cogged inner surface that mechanically engages the metal tube to create the connection. The absence of elastomeric O-rings removes a potential source of chemical seal degradation in applications involving aggressive industrial solvents.

The cold-swaged connection process also preserves the factory-clean internal bore of the stainless steel pipe, avoiding the internal scale and weld-related residue associated with conventional welding. Its smooth internal diameter is particularly relevant to paint circulation systems that require clean flow paths and compatibility with automated pigging operations.

Rather than following the conventional sequence of:

Cut → Fit → Weld → Inspect → Finish

a non-welded connection can follow a simpler installation sequence:

Cut → Prepare → Connect → Gauge Inspection → Test

This can reduce the number of installation activities and help streamline project execution.

Industries Using Industrial Paint Circulation Systems

Industrial paint circulation systems are used wherever manufacturing facilities require a continuous, controlled supply of coatings to spray guns, robotic applicators or other painting equipment. PreFiS® may be suitable for piping in these industries where clean internal bores, chemical compatibility, pressure integrity and reduced hot-work requirements are important.

Automotive

Automotive production lines and component manufcaturers use paint circulation systems to supply primers, basecoats and clearcoats to robotic painting cells and spray booths. Maintaining coating cleanliness and consistent delivery is essential for achieving high-quality vehicle finishes.

Aerospace

Aircraft and aerospace component manufacturers apply specialist coatings for surface protection, durability and appearance. Where paint circulation systems are used, piping cleanliness and compatibility with the coating materials are important considerations.

Industrial Equipment and Machinery

Manufacturers of heavy machinery, construction equipment, agricultural equipment and industrial machinery use paint systems to apply protective and decorative coatings. Reliable coating supply helps maintain finish consistency across high-volume production operations.

Consumer Appliances and Electronics

Manufacturing facilities producing refrigerators, washing machines, electrical enclosures and electronic equipment use automated coating processes for appearance and surface protection. Clean paint delivery can help reduce contamination-related finish defects.

Paint Application Equipment OEMs

Manufacturers of robotic applicators, electrostatic spray equipment, high-pressure proportioning systems and other coating machinery require suitable fluid supply connections. PreFiS® can be evaluated for compatible piping assemblies where clean flow paths and metal-to-metal connections are desired.

Steel Fabrication

Steel fabricators and manufacturers of metal components use industrial painting systems to apply protective coatings and finished surfaces. Non-welded piping connections can be considered where installation access, reduced hot work and maintenance efficiency are priorities.

Benefits of PreFiS® for Industrial Paint Circulation

PreFiS® addresses key challenges associated with conventional paint circulation piping through its cold-swaged connection technology, metal-to-metal sealing design and clean internal bore. These characteristics can support coating quality, installation efficiency and operational reliability when the system is selected for suitable service conditions.

Reduced Risk of Paint Contamination

The cold-swaging process avoids weld slag, soot and carbon scale generated by welding at the connection. A clean, smooth internal bore helps reduce potential sources of contamination that could affect precision spray equipment and finished coating surfaces.

Metal-to-Metal Sealing Without Elastomeric O-Rings

PreFiS® uses a mechanically formed metal-to-metal seal rather than internal rubber O-rings. This removes the specific risk of elastomeric seal degradation associated with exposure to incompatible paint solvents and cleaning chemicals.

Faster Installation

The mechanical connection process avoids the welding activities required at conventional welded joints. According to the PreFiS® product write-up, this approach can reduce plant installation timelines by up to 80%, depending on the project and installation conditions.

No Hot Work at the Connection

PreFiS® uses cold hydraulic tools rather than welding equipment to form the connection. This eliminates welding-related hot work at the joint and can simplify piping modifications in solvent-intensive paint mixing rooms and other areas where hot-work controls are a concern.

Simplified Joint Inspection

PreFiS® connections can be verified using a go/no-go inspection gauge, providing a defined method of checking the completed connection. This can avoid the need for conventional weld-related non-destructive testing where the applicable project requirements and acceptance criteria permit it.

Support for High-Pressure Applications

The product write-up specifies a pressure capability of up to 2,000 PSI (140 bar). This provides potential for use in demanding paint circulation and airless spray applications, subject to the selected system configuration, fluid compatibility and applicable operating requirements.

Improved Project Delivery

Reducing welding, associated inspection activities and hot-work arrangements can simplify installation planning. For original equipment manufacturers (OEMs) and end-user facilities, this can help reduce site labour requirements, commissioning delays and disruption during plant modifications.

Industrial Paint Circulation Applications

PreFiS® can be considered for industrial paint circulation and coating delivery systems where internal cleanliness, chemical compatibility, pressure integrity and reduced hot-work requirements are important. The final application depends on the piping design, fluid properties, pressure and temperature conditions, and the requirements of the equipment manufacturer.

Automotive Paint Shops

Automotive paint shops depend on consistent coating quality across high-throughput production lines. PreFiS® offers a non-welded connection approach designed to reduce welding-related contamination risks in paint circulation pipework supplying precision application equipment.

Robotic Painting Systems

Robotic painting cells and electrostatic bell applicators rely on controlled delivery of coating materials. A smooth internal bore and a connection design without elastomeric O-rings can help address concerns related to particulate contamination and chemical seal degradation.

Paint Mixing Rooms and Colour Changeover Systems

Paint mixing rooms and colour changeover systems may handle different coatings and aggressive flushing solvents. PreFiS® can provide a mechanical connection option for suitable piping modifications where avoiding hot work and elastomeric seal exposure is particularly valuable.

High-Pressure Paint Supply and Airless Spray Lines

High-pressure paint supply systems require connections appropriate for their operating pressure and fluid service. PreFiS® specifies pressure capability up to 2,000 PSI (140 bar), making it a potential option for compatible high-pressure proportioning and airless spray applications.

Industrial Coating and Finishing Facilities

Manufacturers of industrial equipment, metal components and other finished products may operate paint circulation networks serving multiple application points. A non-welded piping approach can help simplify installation and maintenance while addressing the need for clean, reliable coating delivery.

OEM Paint Application Equipment

OEMs supplying paint application technology need piping connections compatible with their equipment, operating conditions and commissioning requirements. PreFiS® offers an alternative to welded and elastomer-sealed connections for suitable systems, with the potential to simplify assembly and reduce installation work at customer facilities.

Industrial Paint Circulation Piping Expertise With PreFiS®

Selecting a non-welded connection system requires more than choosing an alternative to welding. The connection technology must be suitable for the coating materials, cleaning solvents, operating pressure, temperature, piping dimensions and requirements of the associated paint application equipment.

Cenergy Offshore works with PreFiS® technology to help customers address practical piping challenges in industrial paint circulation applications. Our approach considers the application requirements and installation environment before identifying a suitable non-welded connection solution.

PreFiS® Technology

We work with PreFiS® cold hydraulic axial swaging technology as an alternative to conventional welded and elastomer-sealed piping connections for suitable paint circulation applications.

Application-Focused Selection

We consider the operating conditions, fluid compatibility, piping configuration and equipment requirements when evaluating the appropriate connection approach for a project.

Reduced Hot-Work Requirements

By using a mechanical connection process, PreFiS® can eliminate welding at the joint and help simplify piping installation and modification work in areas where hot-work controls are important.

Support for Demanding Manufacturing Environments

We understand the importance of clean piping, dependable connections and efficient installation in production environments where coating quality and manufacturing continuity matter.

Talk to our engineering team about your piping requirements and find the right solution for your application.

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