This means that you'll be able to search for NAICS codes directly (if that's your jam). We'll do the math; let's make better data on public procurement together.
Well Heads; Pumping Equipment; Gas Distribution Equipment.
Possible NAICS Codes
424720 – Petroleum and Petroleum Products Merchant Wholesalers (except Bulk Stations and Terminals)
324110 – Petroleum Refineries
454310 – Fuel Dealers
424710 – Petroleum Bulk Stations and Terminals
325120 – Industrial Gas Manufacturing
333132 – Oil and Gas Field Machinery and Equipment Manufacturing
486910 – Pipeline Transportation of Refined Petroleum Products
325998 – All Other Miscellaneous Chemical Product and Preparation Manufacturing
324199 – All Other Petroleum and Coal Products Manufacturing
324191 – Petroleum Lubricating Oil and Grease Manufacturing