[3] Brown, S. (2019). Innovative Drilling Techniques The Rise of YT29. Oil & Gas Journal, 18(2), 34-40.
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National Grating Fiberglass Trench and Drain Grates are available in two standard resin systems. Each providing different levels of corrosion protection. Both resin systems meet Class 1 Flame Spread Rating per ASTM E-84 test standards.
As the name suggests, molded grating is created on the mold; whereas pultruded grating is created by combining the pultruded profiles in the shape of grating. Molded fiberglass grating is a combination of thermosetting resin with fiberglass roving to create a strong one piece panel.