Tubular TUBULAR BRAID QQ-B-575 RASTM-B-33 DESCRIPTION: APPLICATION:Tinned Copper Brid Woven in Completely Round Configuration as Outlined in SPEC QQ-B-575.Used As Both Shielding and Protective Covering. Shielding is 95% Or More When Placed Over Equivalent Diameter Mandrel To The Inside Diameter of Tubular Braid.