Branching pipes of metal including those from alloy steel and titanium; Ducts of metal for ventilating installations; Elbows of metal for pipes; Junctions of metal for pipes including those from alloy steel and titanium; Manifolds of metal for pipelines; Metal caps for tubing ends; Metal fittings for pipes; Metal junctions for pipes; Metal pipe fittings for compressed air pipes; Metal pipe muffs for use with drain pipe; Metal pipe elbows; Metallic pipes and tubes; Pipes of metal; Rotating jun...