The Brief

Custom 316 2B stainless steel launders, fabricated to collect, convey, and evenly distribute water or effluent from tanks and clarifiers. 316 grade for corrosion resistance in continuous wet service, with the 2B mill finish carried through on the visible surfaces. Each launder runs a pressed U-shaped curved bottom from end to end - the shape that keeps flow even and stops material catching in sharp internal corners. The main bodies measure 600 wide × 800 deep, tapering downstream into 350 wide × 800 deep sections, and finishing at four 350 round outlets. Pressed profile, tapered geometry, and four matched outlets all built to the customer's drawings.‌‍‍‍‌‍‌‍‌‍‍‌‌‍‌‌‍‍‌‌‍‍‍‍‍‍‍‍‌‌‍‌‌‍‍‌‍‍‌‌‌‌‍‌‍‍‌‍‍‌‌‍‍‍‍‍‍‌‍‍‌‍‌‍‌‌‌‍‌‍‍‍‍‍‍‍‍‌‌‌‌‌‌‌‍‌‌‍‍‌‌‍‍‌‍‍‌‌‍‍‌‌‌‍‌‌‌‍‍‌‌‍‌‍‌‌‌‍‌‌‍‍‌‌‌‍‌‍‌‌‍‌‍‌‌‍‌‌‌‌‌‍‌‍‌‌‌‌‍‌‌‌‍‍‌‌‌‍‌‌‌‌‍‍‌‌‍‌‍‍‍‌‍‍‌‌‍‌‌‌‍‌‍‌‍‌‌‍‌‍‍‌‍‌‍‌‌‌‍‌‍‌‌‍‌‌‌‍‌‌‌‌‌‍‍‌‍‌‌‍‌‍‍‌‌‍‌‌‌‍‍‌‍‌‍‍‌‍‌‌‍‌‌‍‌‌‍‌‌‍‌‌‍‍‌‌‌‍‌‌‌‍‌‌‌‌‍‌‌‍‌‌‍‌‍‌‍‌‌‌‍‌‍‌‌‌‌‍‌‍‌‍‍‍‌‍‌‌‌‍‌‌‍‌‌‍‌‌‌‌‍‍‌‌‍‍‌‍‌‍‍‌‌‍‌‌‌‍‌‍‌‍‍‌‍‌‌‌‍‌‌‌‌‌‌‌‍‌‍‌‍‌‌‍‌‌‍‌‌‌‌‌‌‌‍‌‌‍‍‌‌‍‍‌‍‌‍‍‌‌‍‌‌‌‍‌‍‌‍‌‌‍‌‍‍‌‍‌‍‌‌‌‍‌‍‌‌‍‌‌‌‍‌‌‌‌‌‍‍‌‍‌‌‍‌‍‍‌‌‍‌‌‌‍‍‌‍‌‍‍‌‍‌‌‍‌‌‍‌‌‍‌‌‍‌‌‍‍‌‍‌‌‌‍‌‌‌‍‌‌‌‌‍‌‌‍‌‌‍‌‍‌‍‌‌‌‍‌‍‌‌‌‌‍‌‍‌‍‍‍‌‍‌‌‌‍‌‌‍‌‍‌‌‍‌‌‌‌‍‍‌‌‍‍‌‍‌‍‍‌‌‍‌‌‌‍‌‍‍‌‍‌‌‍‌‌‌‍‌‌‌‍‌‌‌‍‌‌‌‍‍‌‌‌‍‌‍‌‌‌‌‌‌‌‌‍‍‌‍‌‍‍‌‌‌‍‍‌‍‌‌‌‍‌‍‍‌‌

Our Approach

The job started at the laser. 316 stainless sheet cut to the customer's supplied DXF files on our CNC fibre lasers - clean edges, parts ready for forming without secondary clean-up. From the laser, sheet went to the CNC press and rollers, where the U-shaped curved bottoms and body sections were pressed and rolled to profile. The same shape, repeatable across every section, so the launders run a consistent flow line from inlet to outlet.

Assembly happened on our 3m × 1.5m jig tables. Jig tables hold the body sections square through tacking and welding, keep the taper geometry true from 600 wide down to 350 wide, and stop the heat of welding pulling the work out of shape. With the launder geometry and the wall depths involved, distortion control isn't optional - the jig setup is what keeps the finished part to size.

Welding ran as a combination of pulse MIG and pulse TIG, both from our dedicated contamination-free stainless facility. Pulse MIG on the longer body seams for speed and consistent penetration, pulse TIG on the detail work and the finish-visible welds - clean welds suited to wet service in 316.

The 90° corner was built as a lobster back curved launder. Segmented sections cut, formed, and welded together so the pressed U-shape carries cleanly around the bend without flattening, kinking, or losing the internal profile. The flow stays even through the corner.

Mesh hatch covers were fabricated and fitted along the launder runs. Some bolt-on for sections that stay closed, others hinged where operators need access during service. The hinged covers were fitted with interlock safety devices, so the cover position ties into the plant's safety system before access is possible.