(Click to enlarge image) Producers of Round, Square, hex, Metal Lockseam Tubing. Since 1948. Open, Split, Flanged, Seams also produced. Tubing can be supplied with options such as Ends Flattened and Bent for Corrugated Shelf Supports, Roller Tubing Ends and springs for pull-Down, Pull-up Displays. Prefinished Silver, Tin Plate (Best Value),for shelf Supports. Prepainted White, Black and other Colors available. Thicknesses from .014 (Best Value),to.024. Legs for Plastic Shelving can also be Lockseam tubing with Crimped Ends for Push on Fit. 1" Square Easel Tubing also Produced. Samples Available. Standard Raw Materials and Diameters Ship Almost Immediately.