HDPE for pressure pipe gains wide approvals. (Materials).A new HMW-HDPE copolymer with bimodal bi·mod·al adj. 1. Having or exhibiting two contrasting modes or forms: "American supermarket shopping shows bimodal behavior MW distribution has been approved for a wide range of high-pressure pipe applications by the Plastics Pipe Institute (PPI (1) (Pixels Per Inch) The measurement of the resolution of a monitor or scanner. For example, a monitor that is 16 inches wide and displays 1600 pixels across its width would have a resolution of 100 ppi (1600 divided by 16). ). Alathon XL5008 from Equistar Chemicals, LP, Houston, exceeds PPI's PE3408 (E8) rating, which specifies 1600-psi Hydrostatic Design Basis (HDB) at 23 C. It also meets the PE3408 (E2) rating--1000-psi HDB at 60 C. As a result, it can now be used in pressure pipe for oil and gas production, industrial and mining pipe, and potable-water systems. XL5008 meets National Sanitation Foundation (NSF) Standards 14 and 61 for potable-water pipe and fittings, as well as FDA FDA abbr. Food and Drug Administration FDA, n.pr See Food and Drug Administration. FDA, n.pr the abbreviation for the Food and Drug Administration. 21 CFR CFR See: Cost and Freight 177.1520 regulations for food contact. The 0.95-g/cc, 0.08-MI resin is produced in a multi-reactor process that is said to give excellent processability. Its high melt strength enables production of thick-wall pipe from 0.5 to 63 in. diam. without sagging at very high extrusion rates. The product is also said to provide superior ESOR ESOR Emergency Standoff Range and smooth surface appearance. Tel: 713-652-7300, www.equistarchemicals.com |
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