How to Do Piping Using SOLIDWORKS

Piping in SOLIDWORKS is used to create routed pipe systems for equipment, skids, process layouts, and mechanical assemblies. A good piping model should show where the pipe runs, how it connects, what fittings are used, and whether the route has enough clearance for fabrication and service.

Prepare the assembly

Start with the equipment, tanks, frames, or connection points in the assembly. The piping route needs reliable references, so make sure major components are fixed or mated correctly before creating the route.

If connection points move later, the route can update or fail depending on how it was built. Stable layout references make the piping model easier to maintain.

Before adding pipe, review the available space around pumps, valves, guards, and frames. A route that looks direct may not leave room for installation, insulation, flanges, or future service access.

Create the route path

The pipe route is driven by sketch geometry. Use lines, arcs, and route points to define the path between connection points. Keep the route clear and intentional rather than adding unnecessary bends.

Use dimensions and relations where the route needs to meet clearance, support, or installation requirements. An underdefined route can move unexpectedly when the assembly changes.

Keep bends and direction changes as simple as possible. Every unnecessary bend can add fittings, pressure drop, fabrication time, and extra chances for interference.

Add fittings and components

Fittings such as elbows, tees, flanges, couplings, and reducers should match the pipe size and routing standard. Check orientation after insertion, especially for tees, flanges, and components with bolt patterns.

If you use library components, confirm that the correct configuration, size, and material are selected. A visually similar fitting can still be wrong for the route specification.

Use consistent naming for route parts and fittings. This makes the assembly tree, drawings, and purchasing information easier to review after the routing work grows.

Check clearances and supports

After the route is created, check clearances around equipment, structure, access panels, and maintenance areas. Pipes that fit in CAD may still be difficult to install if there is no room for tools or assembly sequence.

Also consider supports, clamps, hangers, and thermal movement. A route is not complete just because the pipe connects from point A to point B.

For high-temperature or long runs, think about expansion and movement. The CAD route should not imply a rigid installation if the real piping needs room to grow, move, or be supported.

Review drawings and BOMs

Piping work often needs drawings, cut lengths, fitting lists, and sometimes isometric information. Review the generated BOM and route properties before release.

Confirm pipe size, wall thickness, material, end connections, and route revision. Small property mistakes can create purchasing or fabrication problems.

If spool drawings or cut lists are required, compare them against the assembly model. Check that fittings and pipe segments are represented in the way the shop expects.

Troubleshooting

If the route fails, check broken sketch relations, missing connection points, suppressed components, or fittings that no longer match the pipe size. Simplify the route and rebuild before adding more detail.

For production piping, verify the route against real installation constraints. Include enough information for fabrication, assembly, inspection, and future maintenance.

Keep the route organized with clear names and consistent routing standards. That makes revisions easier when connection points or equipment layouts change.

Before release, walk through the route from start to finish and compare it to the real system flow. This catches reversed fittings, missing valves, and routes that are connected geometrically but not logically.