Parts and fittings for heating installations and apparatus; compression fittings, all for the plumbing and heating trades; materials and articles, all for use in building and civil engineering construction; pipes, tubes and gutters; connectors, couplings, seals and joints, all for pipes, tubes and for gutters; pipe fittings; transition, tapping and fixing fittings for pipes; spigot and shut-off saddles for pipes; clamps for pipes; plates; flanges; valves; ferrules; nuts and bolts; rings; screws, washers and wall hooks; parts and fittings for all the aforesaid goods; all included in Class 6.;