NIGP 28: The Trades: Electrical, Engineering, HVAC, Plumbing, and Welding

Category

Code facts

Codes under it
7
Open opportunities
142 664 posted in the last 90 days

NIGP codes come from the NIGP Code (NIGP: The Institute for Public Procurement, maintained by Periscope Holdings), and state and local contract opportunities from the governments' procurement sites.

State & local contract opportunities

Notice Posted Due
Tdcj estelle unit electrical switch board Open · Texas
Purchase of Ozone Destruct Room Equipment*222606 Open · Texas
MS-IFB/DWM/2610-1270120/Compressor Systems, Parts, Services, and Repairs Open · Georgia
BID 2026-79 Tri-City WRRF Boiler Gas Feed Open · Oregon
RFP Conservation Plumbing Fixtures Open · Texas
Licensed Environmental Professional Services Open · Connecticut
Cooling Tower Chemical Treatment & Testing Services Open · Arizona
General Traffic Equipment PN-150-18-A-TB Open · Texas
UDOT Notice of Sole Source- Hunt Contract- Additional Funding Open · Utah
MoDOT KC District Electrical Repair Services for Arrow Boards and Message Boards Open · Missouri
TDCJ Woodman unit - Electronic rocker switches Open · Texas
Data Center Heating and Cooling Open · Maryland
82-20261006093107 jcjc Closed · Mississippi
Conventional Pole Mount Transformers Open · Florida
Single Phase Pad Mount Transformers Open · Florida
Plumbing Job Order Contracts (JOC 2714 and 2715) - Class C36 License Open · California
82-20261002091222 mgccc Open · Mississippi
WRRF West Substation Transformer Repair Closed · California —
Emergency Notice-UPS Elect Rep G1306 DuQuoin Open · Illinois
Reclaiming Mercury from Fluorescent Lighting Closed · Florida —
Aluminum and Steel Drainage Pipe Closed · Florida —
Fiber Analysis - ARPA Closed · Florida —
4" - 6" Ductile Iron Pipe (Bid Discount) Open · Florida
IFB #27-281 281 Preventative Maintenance Testing/Inspection and Emergency Repairs of Low/Medium Voltage Equipment Open · Maryland
BVL Substation Wall Mount A/C Units Closed · Florida —
Marydia substation no. 01 15 KV circuit breaker replacement Closed · Florida —
Art Paper Closed · Florida —
Sole Source Sewer Line Rapid Assessment Tool Closed · Florida —
Sole Source with Unimar Closed · Florida —
Sole Source with TSC Jacobs Florida Closed · Florida —
Notice of Intent to Sole Source Xylem, Flygt OEM Parts Closed · Florida —
Omicron CP TD12 Testing Device Closed · Florida —
Aluminum Conductor Composite Core Closed · Florida —
County Service Complex – Merritt Island - Cooling Tower Refurbishment Closed · Florida
Specifications for the purchase of material for tavernier to islamorada 138KV line #5 Closed · Florida —
Specifications for the purchase of materials for recloser project Closed · Florida
2027-2028 Emergency Distribution, Transmission & Substation Restoration Open · Florida
2026-2029 System Improvement Contract RFP Open · Florida
RFQ 26-773 Generator Maintenance Contract Awarded · Florida —
Welding Bender Closed · Florida
Lift Station – B012 & Lift Station – B013, Control Panel, Floats, Transducer, and Related Equipment Open · Florida
Fleet maintenance and repairs services Open · Florida
Remove & Replace Duct Heater Open · Texas
HVAC and Refrigeration Parts Open · California
Parkrose S.D. CM/GC Russell ES & Shaver ES Geothermal RFP Open · Oregon
Generator Replacement for Collin County Adult Detention Facility (CCADF) Cluster 1 Closed · Texas —
Generator Replacement for Collin County Adult Detention Facility (CCADF) Lower B Closed · Texas —
Commodity contract for 13' green special octafluted poles Open · Wisconsin
Shop Hand Tools Closed · Pennsylvania
IWQ 140822 Purchase of Inergy Solutions Shoe Box Fixture Open · Georgia
Show 40 more

Latest 50 of 15,871 listed here. See the rest on GovTribe.

Opportunities by state

Rank State Open now Posted, last 90 days
1 Florida 24 154
2 Texas 26 145
3 Georgia 27 92
4 California 11 59
5 Massachusetts 6 29
6 Michigan 5 29
7 Maryland 7 17
8 Pennsylvania 5 17
9 Utah 3 17
10 Oregon 6 12
11 Mississippi 2 12
12 Colorado 4 11
13 Illinois 2 9
14 Arizona 2 8
15 South Carolina 3 6
16 Missouri 2 6
17 Kentucky 2 5
18 Connecticut 1 5
19 New Jersey 1 4
20 South Dakota 0 4
21 Delaware 0 3
22 New Mexico 0 3
23 North Carolina 0 3
24 Ohio 0 3
25 Minnesota 2 2
26 Wisconsin 1 2
27 Alabama 0 1
28 District of Columbia 0 1
29 Kansas 0 1
30 Nevada 0 1
31 Tennessee 0 1
32 Virginia 0 1
33 West Virginia 0 1
Show all 33

Codes under 28

NIGP code
031 Air Conditioning, Heating, and Ventilating Equipment, Parts and Accessories
285 Electrical Equipment and Supplies, Except Cable and Wire
305 Engineering and Architectural Equipment, Surveying Equipment, Drawing Instruments, and Supplies
658 Pipe, Tubing, and Accessories, Not Fittings
659 Pipe and Tubing Fittings
670 Plumbing Equipment, Fixtures, and Supplies
895 Welding Equipment and Supplies

Quick answers

What is NIGP 28?

NIGP 28 is The Trades: Electrical, Engineering, HVAC, Plumbing, and Welding, a category of the NIGP Commodity/Services Code.

What codes are under NIGP 28?

NIGP 28 has 7 codes under it with their own GovTribe pages, including 031 Air Conditioning, Heating, and Ventilating Equipment, Parts and Accessories; 285 Electrical Equipment and Supplies, Except Cable and Wire; and 305 Engineering and Architectural Equipment, Surveying Equipment, Drawing Instruments, and Supplies.

Which states post the most state and local bids under NIGP 28?

The states with the most state and local contract opportunities under NIGP 28 posted in the last 90 days are Florida (154), Texas (145) and Georgia (92).

What is the latest state & local contract opportunity under NIGP 28?

The latest state & local contract opportunity under NIGP 28 is Tdcj estelle unit electrical switch board from Texas, posted November 4, 2026.

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See everything under NIGP 28

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