Rigid, semi-rigid and flexible metallic pipes, hoses, tubing and expansion joints;
metallic joints and fittings including flexible metal hoses,tubing, corrugated metal tubing and assemblies;
end fittings and couplings through which liquid, solid and gaseous articles pass;
all the above being lighting, heating, steam generating, cooking, cooling, refrigerating, drying, humidifying, ventilating and/or for conveying any and all such solid, liquid and/or gaseous substances