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Tri-Mer Co-polymer Tanks Were Recently Chosen for a Major Stainless Steel Processing Line in Pohang, South Korea

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Courtesy of Tri-Mer Corporation

The line provides continuous annealing and pickling of stainless coils, “24/7.”

Tri-Mer co-polymer tanks were originally designed for use in hard-coat and hot anodizing operations, where continuous extreme temperatures (32ºF, up to 85ºF and above) are standard.

Tri-Mer co-polymer tanks are fabricated using a proprietary protocol that assures seamless structural integrity and full strength at all bend sites.  The Pohang co-polymer tanks were engineered by Tri-Mer to unusually close (±1.5”) tolerances, to fit an existing configuration with strict space limitations. They replace four steel/ rubber brick-lined tanks, which will be demolished as part of the project.

Each Tri-Mer co-polymer tank is manufactured from 1.5” pre-stressed polypropylene sheet, and is 60’ x 6’ x 3’.  Tank #1 operates 30% sulfuric acid at 212ºF.  Tank #2 is a mixed acid (30% nitric, 15% hydrofluoric) tank operating at 176ºF.  The remaining tanks are a uniquely engineered configuration of “two tanks in one” (4 total modules) precisely sloped, with tight center-line requirements.  Tank covers, also provided by Tri-Mer, are 1” (European standard gray) polypropylene.

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