Why is Non-Welded Piping important in fluid power systems?

Why is Non-Welded Piping important in fluid power systems?

Why non-welded piping is transforming fluid power

The "old school" method of working in the field of hydraulics, fluid power, and high-pressure systems usually involves a welder and a torch. It also requires a lot more downtime. Until recently, joining pipes was done by welding. Non-welded piping (NWP) has become an industry standard as industries have demanded higher efficiency, cleaner systems, and faster installation.

Here's why non-welded fluid power technology can be a game-changer for those managing or designing systems.

1. Superior System Cleanliness

Contamination in fluid power is the number one killer. When you are welding a pipe, you introduce heat scale, slag, and oxidation to the bore. To remove these "burrs", aggressive chemical flushing is required (pickling), a process that can be time-consuming and hazardous.

Non-welded systems, such as those that use 37 ° Flare and retaining Ring technologies, are inherently clean. No heat means no scale. This reduces the time required for initial flushing and protects valves and pumps against premature failure.

2. Headache from "Hot Work?"

Safety protocols and permits are required for welding. Hot work in environments such as oil rigs or chemical plants can require the closure of entire sections.

  • No fire Hazard: Because NWP uses a mechanical form, there aren't any sparks or flames.

  • No X Ray Testing: Welded joint integrity is often determined by expensive ultrasonic or X-ray testing. Visual verification is available for non-welded joints, so you can be sure they're secure as soon as they are assembled.

3. Installing Faster

It is important to save time, particularly during dry docks or factory turnarounds. Installing non-welded piping is up to 50% to 70% faster compared to traditional welding.

Feature Welded Pipe Non-Welded Piping
Preparation Beveling & Cleaning Simple Cut & Deburr
Joining Multi-pass welding Mechanical forming (Flaring/Flanging)
Post-Op X-Ray & Chemical Pickling Basic Flushing
Required Skill Certified Welder Trained Technician

4. Vibration Resistance Life and Fatigue Life

Fluid power systems rarely remain static. They vibrate and experience thermal expansion. The heat-affected zone (HAZ), which is created by a weld, changes the molecular structures of the metal. This creates an area that can crack under stress.

Non-welded connections preserve the material properties of the pipe. 37 ° flare systems distribute stress evenly and allow the piping to handle high-cycle fatigue much better than a rigid brittle weld.

Non-welded piping is the better choice for fluid power systems. While welding has its place, it's not the only option. It lowers the total cost of ownership because it reduces labor costs, insurance risks, and, most importantly, system downtime.