6 COPPER PIPES FOR USE IN PLUMBING, WATER SUPPLY, DRAINAGE, SANITATION, GAS, REFRIGERATION AND HVAC SYSTEMS; METAL COUPLINGS FOR PIPES FOR USE IN PLUMBING, WATER SUPPLY, DRAINAGE, SANITATION, GAS, REFRIGERATION AND HVAC SYSTEMS; METAL JUNCTIONS FOR PIPES FOR USE IN PLUMBING, WATER SUPPLY, DRAINAGE, SANITATION, GAS, REFRIGERATION AND HVAC SYSTEMS; METAL JOINT CONNECTORS FOR PIPES FOR USE IN PLUMBING, WATER SUPPLY, DRAINAGE, SANITATION, GAS, REFRIGERATION AND HVAC SYSTEMS; METAL PIPES FOR USE IN PLUMBING, WATER SUPPLY, DRAINAGE, SANITATION, GAS, REFRIGERATION AND HVAC SYSTEMS; COPPER TUBES FOR USE IN PLUMBING, WATER SUPPLY, DRAINAGE, SANITATION, GAS, REFRIGERATION, HVAC SYSTEMS; AND METAL TUBES FOR USE IN PLUMBING, WATER SUPPLY, DRAINAGE, SANITATION, GAS, REFRIGERATION AND HVAC SYSTEMS