90 Services engineering products

• 90-05 Drainage products
• 90-10 Pipelines products
• 90-15 Water supply products
• 90-20 Steam products
• 90-25 Liquid fuel supply products
• 90-30 Gas supply products
• 90-35 Fire fighting products
• 90-40 Heating and cooling products
• 90-45 Air handling products
• 90-50 Power supply products
• 90-55 Cable products
• 90-60 Electrical products
• 90-65 Control, monitoring and metering products
• 90-70 Communications products
• 90-75 Protection products
• 90-80 Transport products
• 90-90 General engineering services products
• 90-95 Miscellaneous services engineering products