How an Airport Chair's "Backbone" Is Made: The Complete Trim Bar Production Process

How an Airport Chair's "Backbone" Is Made: The Complete Trim Bar Production Process

An airport chair holds up to thousands of sitting-downs every day. What keeps it going isn't just the steel seat panel—it's also the low-key metal trim bar on each side, the true "backbone" of the whole chair. As a professional airport chair manufacturer and seating manufacturer, Weike Furniture takes edge bar machining just as seriously. Today we take you through the complete production process of an airport chair trim bar, from a single metal tube to a finished part, filmed right on our workshop floor.

Raw tube materials

Step one is raw material preparation. The trim bar starts from high-quality metal tubes, cut to length and brought into the workshop. These unassuming tubes will eventually become the most solid side support of a public waiting chair.

Step two: the 25-ton punch press cuts notches on the left and right ends. The worker feeds the profile tube into the press, punching locating notches at both ends—this step sets the precision benchmark for everything that follows.

Notch punching

Step three: trimming and sealing the tube end, preparing it for welding and structural load.

Step four: welding the joint. Welding is the critical step that gives the trim bar its strength. The worker wears a welding helmet and, in the glow of the arc, welds the joint firmly so the whole bar can bear the load.

Welding arc

Step five: the 38-type tube bender forms the big curve, bending the straight tube into the elegant long arc along the side of an airport waiting chair.

Big curve bending

Step six: pressing reinforcement points into the bar to boost local strength and resistance to deformation.

Step seven: the hydraulic press forms the two small bends at each end, precisely matching the overall shape of the airport chair.

Hydraulic press small bends

Step eight: drilling screw holes with a 6.7mm alloy drill, reserving precise mounting positions for assembly.

Step nine: tapping threads in the holes so the bar can be firmly fastened to the seat frame.

Tapping

The result is a complete airport chair trim bar with a smooth surface and precise curvature. Together with the seat panel and frame, it forms a dependable airport terminal chair, hospital waiting chair or gang chair. Weike Furniture builds quality from every single part, delivering public seating solutions for airports, stations, hospitals and schools that stand the test of time. All processes support custom seating in bulk and OEM/ODM production—factory direct, and buyers worldwide are welcome to inquire.

Finished trim bar