Glass Lined Steel Tanks Built to EN ISO 28765, and to the Approvals Your Tender Demands Written for European and UK specifiers, EPC contractors and procurement leads who need a bolted storage tank that clears WRAS, KIWA and DWI Regulation 31, not just a glossy brochure. Water authorities in the EU and UK write “GLS tank to EN ISO 28765” into their specifications. The same product is called GFS in North America and “enamel bolted tank” in many catalogs. The name changes; the