Type "SL" Swage Locked Steel Grating
Type"SL"steelgratingsarealsomanufacturedbyinsertinghollowtubecrossbarsintopre-punchedholesinthebearingbarsandswagingthecrossbarsformingapositivemechanicalconnection.Thecrossbarsarerecessedbelowthetopsurfaceofthebearingbarsprovidingauniformandattractivearchitecturalappearance.Swagelockingisaparticularlyefficientprocessfortheproductionofclosemeshgratings.Type7-SL-4with3/16"thickbearingbarsprovidesanet1/4"clearopeningbetweenthebearingbars.Thisnarrowopeningisoftenpreferredinpublicareaswhereconcernsofdrainageandthepresenceofhighheeledshoesconverge.