W e l d e d B e a m A d ds C u s t o m T e e S h a p es T o P r o d u c t Line

The ability to custom design and manufacture welded steel T-beams, in addition to conventional I- and H-beams, has recently been announced by Welded Beam Company, Perry, Ohio.

Among other applications, these new welded steel tee shapes are being offered in shipbuilding as stiffeners for reinforcing bulkhead panels, decks, and hulls; railcar frame components; tank trailer circumferential rib stiffeners; and as flange members in open-web bar joists and trusses.

Initial production runs were made for consideration by Ingalls Shipbuilding Co., Pascagoula, Miss., and were witnessed by both Ingalls and U.S. Navy personnel.

The 4 x 4 x 1 / 4 inch tees were fabricated from A710 nickel-bearing HSLA steel and will be utilized as stiffeners in shipbuilding applications.

Normal procedure had been to fabricate the tees from sheared and arc-welded plates. The HF welded beams eliminate this costly step.

The new welded T-beams, like the current line of I- and H-beams, are produced continuously from two coiled steel strips on a 500- foot-long welding mill at production speeds up to 200 FPM. The mill employs high frequency (400 KHz) welding to produce forgetype welds with strengths equal to or greater than the parent material.

T-beams can be produced from a variety of materials, including A36, A710, and 80,000-psi yield HSLA steels. Sizes of tees can range from 3-inch to 12-inch stem heights, 3-inch to 6-inch flange widths, .090-inch to 1/4-inch thicknesses, and 7-foot to 40-foot lengths. Finished beams are cut to exact customer lengths on the fly to within ± 1/8-inch tolerance, eliminating waste and recut labor on site. And since the T-beams are fabricated from coiled strips, cross sections are flat and square, allowing easier fit-up in assembly.

The manufacturing process also allows the design engineer to specify the exact cross section to suit his particular loading requirements.

For example, tees with offset or "noncentered" stems, thin stems to thick flanges, and even composites with flange and stem of two different steels are possible.

For further information and free literature on products and capabilities from the Welded Beam Company, C i r c l e 7 2 on Reader Service Card

Maritime Reporter Magazine, page 21, Apr 1984

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Maritime Reporter

First published in 1881 Maritime Reporter is the world's largest audited circulation publication serving the global maritime industry.