35 Retail and wholesale services in respect of apparatus, instruments and machines for welding pipes and pipelines and parts, fittings and accessories for all of the aforesaid goods; retail and wholesale services in respect of apparatus, instruments and machines for use in spraying pipes and pipelines and parts, fittings and accessories for all of the aforesaid goods; retail and wholesale services in respect of apparatus, instruments and machines for spraying chemicals or jointing compounds on pipes and pipelines and parts, fittings and accessories for all of the aforesaid goods; retail and wholesale services in respect of apparatus, instruments and machines for use in the preparation and cleaning of joints in pipes and pipelines and parts, fittings and accessories for all of the aforesaid goods; retail and wholesale services in respect of apparatus, instruments and machines for use in the abrasive particle blasting of pipes and pipelines and parts, fittings and accessories for all of the aforesaid goods; retail and wholesale services in respect of apparatus, instruments and machines for heating pipes and pipelines and parts, fittings and accessories for all of the aforesaid goods; retail and wholesale services in respect of apparatus, instruments and machines for inspection of pipes and pipelines and parts, fittings and accessories for all of the aforesaid goods; retail and wholesale services in respect of apparatus, instruments and machines for testing pipes and pipelines and parts, fittings and accessories for all of the aforesaid goods