Top 100 Contractors in NAICS 33241: Power Boiler and Heat Exchanger Manufacturing, FY2025

Name: Top 100 Contractors in NAICS 33241: Power Boiler and Heat Exchanger Manufacturing, FY2025
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 93% of FY2025 NAICS 33241 contract dollars

Contract obligations: $2,192,673,403 Net of deobligations, by contracts coded NAICS 33241 or a code under it
Contractors: 175 Parent companies with an obligation
Largest contractor: Bechtel Corp $2.14 billion, 91.6% of obligations
Data as of: Oct 23, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Bechtel Corp Through Bechtel Plant Machinery, Inc. Top agencies Navy (Department of the Navy)	$2,141,497,055	91.6%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2	Huntington Ingalls Industries, Inc. Through Huntington Ingalls Inc. Top agencies Navy (Department of the Navy)	$9,797,588	0.4%	Rank history: #3 in FY2021, #3 in FY2022, #2 in FY2023 and #2 in FY2024; unchanged since FY2024.
3	ECI Defense Group, Inc. 2 awardees Top agencies DLA (Defense Logistics Agency)	$7,952,327	0.3%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2023 and #11 in FY2024; up 8 since FY2024.
4	Jgils, LLC Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$3,626,086	0.2%	Rank history: #10 in FY2021, #23 in FY2022, #7 in FY2023 and #9 in FY2024; up 5 since FY2024.
5	Alfa Laval U.S. Holding Inc. 3 awardees, including Tranter Inc. and Alfa Laval Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$2,931,182	0.1%	Rank history: not on the FY2021–FY2023 lists and #92 in FY2024; up 87 since FY2024.
6	Aqua-Chem, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,802,974	0.1%	Rank history: #9 in FY2021, #4 in FY2022, #4 in FY2023 and #5 in FY2024; down 1 since FY2024.
7	Graham Corp Top agencies Navy (Department of the Navy)	$1,664,270	0.1%	Rank history: not on the FY2021 list, #17 in FY2022, #14 in FY2023 and #22 in FY2024; up 15 since FY2024.
8	Terry Service, Inc. Top agencies Army (Department of the Army)	$1,387,381	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
9	Evoqua Water Technologies LLC Through Fluid Handling LLC Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$978,018	<0.1%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2024; up 7 since FY2024.
10	Renk Systems Corp Top agencies Navy (Department of the Navy)	$749,986	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
11	Thermo Fisher Scientific Inc. Through Thermo Fisher Scientific (Asheville) LLC Top agencies Navy (Department of the Navy)	$747,855	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
12	Eddy Pump Corporation Top agencies Navy (Department of the Navy)	$692,000	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
13	RPS Holdings, Inc. Through Rantec Power Systems Inc. Top agencies Navy (Department of the Navy)	$661,500	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
14	Argo Turboserve Corporation Top agencies DLA (Defense Logistics Agency)	$603,881	<0.1%	Rank history: #42 in FY2021, #18 in FY2022, #6 in FY2023 and #10 in FY2024; down 4 since FY2024.
15	Tomahawk Sourcing LLC Top agencies DLA (Defense Logistics Agency)	$595,125	<0.1%	Rank history: #32 in FY2021, not on the FY2022–FY2023 lists and #55 in FY2024; up 40 since FY2024.
16	Leonardo S.p.A. 3 awardees, including Pivotal Power Inc., Laurel Technologies Partnership and DRS Naval Power Systems Inc. Top agencies Navy (Department of the Navy)	$540,568	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
17	Lake Shore Systems Inc. Top agencies Navy (Department of the Navy)	$524,890	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
18	Burhani Enterprises Inc. Top agencies DLA (Defense Logistics Agency)	$475,284	<0.1%	Rank history: #60 in FY2021, #36 in FY2022, #31 in FY2023 and #61 in FY2024; up 43 since FY2024.
19	Electro Parts Inc. Top agencies DLA (Defense Logistics Agency)	$467,266	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
20	Northrop Grumman Corporation Through Northrop Grumman Systems Corporation Top agencies Navy (Department of the Navy)	$442,310	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
21	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency)	$432,448	<0.1%	Rank history: #6 in FY2021, #58 in FY2022, not on the FY2023 list and #23 in FY2024; up 2 since FY2024.
22	Hornet Acquisitionco LLC 2 awardees, including Maxim Evaporators of America, LLC and Fairbanks Morse, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$422,718	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
23	Lynchburg Air Preheater Corporation Top agencies Army (Department of the Army) DOI (Department of the Interior) Commerce (Department of Commerce)	$404,309	<0.1%	Rank history: #37 in FY2021, #24 in FY2022, not on the FY2023 list and #7 in FY2024; down 16 since FY2024.
24	Heico Corp Through Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$402,170	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
25	Diversified Heat Transfer, Inc. Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy)	$399,693	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
26	Aero Precision Industries LLC Through Allclear Aerospace & Defense, Inc. Top agencies DLA (Defense Logistics Agency)	$382,371	<0.1%	Rank history: #8 in FY2021, #8 in FY2022 and not on the FY2023–FY2024 lists; returned.
27	Peterson Machinery Co Top agencies DOJ (Department of Justice)	$381,762	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
28	Par Defense Industries, LLC Top agencies DLA (Defense Logistics Agency)	$378,368	<0.1%	Rank history: #61 in FY2021, #83 in FY2022 and not on the FY2023–FY2024 lists; returned.
29	Separator Spares & Equipment LLC Top agencies DLA (Defense Logistics Agency)	$349,340	<0.1%	Rank history: not on the FY2021 list, #35 in FY2022, #52 in FY2023 and #21 in FY2024; down 8 since FY2024.
30	MCO Solutions, Inc. Top agencies DLA (Defense Logistics Agency)	$304,182	<0.1%	Rank history: not on the FY2021 list, #33 in FY2022, #50 in FY2023 and #25 in FY2024; down 5 since FY2024.
31	Playpower LT Farmington Inc. Through API Heat Transfer Inc. Top agencies NASA (National Aeronautics and Space Administration) DHS (Department of Homeland Security)	$303,539	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
32	Stag Enterprise, Inc. Top agencies Navy (Department of the Navy)	$295,089	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
33	Prime Mover Holdings LLC Through Motor Services Hugo Stamp Inc. Top agencies Navy (Department of the Navy)	$294,550	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
34	Mccray Group Ventures LLC Top agencies USAF (Department of the Air Force)	$256,991	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
35	S I T Corporation Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$231,920	<0.1%	Rank history: #11 in FY2021, #41 in FY2022, #9 in FY2023 and #12 in FY2024; down 23 since FY2024.
36	Phoenix Systems Engineering Inc. Top agencies DLA (Defense Logistics Agency)	$231,800	<0.1%	Rank history: #20 in FY2021, #42 in FY2022, #30 in FY2023 and #19 in FY2024; down 17 since FY2024.
37	Boonyium & Associates Limited Top agencies Navy (Department of the Navy)	$227,587	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
38	KAM Thermal Equipment, Ltd. Top agencies DHS (Department of Homeland Security)	$219,000	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
39	The Cleaver-Brooks Company, Inc. Through Cleaver-Brooks Sales and Service, Inc. Top agencies DOJ (Department of Justice)	$217,306	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
40	Thrustmaster of Texas, Inc. Top agencies Navy (Department of the Navy)	$208,480	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
41	Accord Federal Services, LLC Top agencies DOJ (Department of Justice)	$202,364	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
42	Phoenix Trading Inc. Top agencies DLA (Defense Logistics Agency)	$195,561	<0.1%	Rank history: #13 in FY2021, #27 in FY2022, #21 in FY2023 and #64 in FY2024; up 22 since FY2024.
43	Triman Industries Inc. Top agencies DLA (Defense Logistics Agency)	$194,031	<0.1%	Rank history: #22 in FY2021, not on the FY2022–FY2023 lists and #84 in FY2024; up 41 since FY2024.
44	Westchester Plastics LLC Top agencies Army (Department of the Army)	$191,696	<0.1%	Rank history: not on the FY2021–FY2023 lists and #30 in FY2024; down 14 since FY2024.
45	Sterileco LLC Top agencies DOI (Department of the Interior)	$190,613	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
46	Power Mechanical Inc. Top agencies DOJ (Department of Justice)	$186,750	<0.1%	Rank history: not on the FY2021–FY2022 lists, #27 in FY2023 and #13 in FY2024; down 33 since FY2024.
47	NGH Retail LLC Top agencies DLA (Defense Logistics Agency)	$183,725	<0.1%	Rank history: #38 in FY2021, #72 in FY2022, #48 in FY2023 and #47 in FY2024; unchanged since FY2024.
48	K5 Defense LLC Top agencies DLA (Defense Logistics Agency)	$183,612	<0.1%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2023 and #91 in FY2024; up 43 since FY2024.
49	Jo-Kell Inc. Top agencies Navy (Department of the Navy)	$165,132	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
50	Robco Sales Inc. Top agencies VA (Department of Veterans Affairs)	$164,138	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
51	Kijero, LLC Top agencies USAF (Department of the Air Force)	$158,855	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
52	Midwest Machinery Co Top agencies Army (Department of the Army)	$154,388	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
53	Cici Boiler Rooms Inc. Top agencies Navy (Department of the Navy)	$150,000	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
54	Fluid Energy Controls Inc. Top agencies DLA (Defense Logistics Agency)	$135,576	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
55	Apex Pinnacle Corp Top agencies DLA (Defense Logistics Agency)	$135,035	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
56	Lee Mechanical Solutions, Inc. Top agencies USDA (Department of Agriculture)	$132,825	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
57	Delval Equipment Corporation Top agencies DOJ (Department of Justice) USAF (Department of the Air Force)	$129,738	<0.1%	Rank history: #99 in FY2021 and not on the FY2022–FY2024 lists; returned.
58	Madison Electric Co Top agencies DLA (Defense Logistics Agency)	$127,500	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
59	Westsim Engineering, Inc. Top agencies DLA (Defense Logistics Agency)	$124,988	<0.1%	Rank history: #59 in FY2021, #94 in FY2022, #59 in FY2023 and #94 in FY2024; up 35 since FY2024.
60	SZY Holdings, LLC Top agencies DLA (Defense Logistics Agency)	$123,463	<0.1%	Rank history: not on the FY2021 list, #89 in FY2022 and not on the FY2023–FY2024 lists; up 100 since FY2024.
61	Ray Blackman Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$116,992	<0.1%	Rank history: not on the FY2021 list, #44 in FY2022 and not on the FY2023–FY2024 lists; returned.
62	Dynalec Corporation Top agencies Navy (Department of the Navy)	$112,177	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
63	Derbyshire Machine & Tool Co Top agencies DLA (Defense Logistics Agency)	$111,260	<0.1%	Rank history: #98 in FY2021, not on the FY2022 list, #92 in FY2023 and #87 in FY2024; up 24 since FY2024.
64	TECH Nexuses, Inc. Top agencies DOJ (Department of Justice)	$110,481	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
65	Results Sales & Service, L.L.C. Top agencies VA (Department of Veterans Affairs)	$109,325	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
66	FAD Pennsylvania Inc Top agencies Navy (Department of the Navy)	$107,213	<0.1%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2024; down 58 since FY2024.
67	Power Plus International, Inc. Top agencies DOJ (Department of Justice)	$104,798	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
68	Arhab LLC Top agencies DOI (Department of the Interior)	$102,580	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
69	Dreamfind, Inc. Top agencies DLA (Defense Logistics Agency)	$100,192	<0.1%	Rank history: not on the FY2021 list, #38 in FY2022, #65 in FY2023 and #44 in FY2024; down 25 since FY2024.
70	Tekton CC, LLC Top agencies VA (Department of Veterans Affairs)	$99,773	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
71	TNL Sales LLC Top agencies DLA (Defense Logistics Agency)	$99,148	<0.1%	Rank history: not on the FY2021–FY2022 lists, #54 in FY2023 and not on the FY2024 list; returned.
72	RNK International, Inc. Top agencies DLA (Defense Logistics Agency)	$97,795	<0.1%	Rank history: not on the FY2021 list, #80 in FY2022 and not on the FY2023–FY2024 lists; returned.
73	The Blackledge Group, Inc. Top agencies DHS (Department of Homeland Security)	$95,000	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
74	DC Fabricators Inc. Top agencies DLA (Defense Logistics Agency)	$92,376	<0.1%	Rank history: not on the FY2021–FY2022 lists, #89 in FY2023 and #98 in FY2024; up 24 since FY2024.
75	Pride Electronics Inc. Top agencies DLA (Defense Logistics Agency)	$92,066	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 48 since FY2024.
76	Hatfield and Company Inc. Top agencies Army (Department of the Army)	$88,037	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
77	United Rentals, Inc. Through United Rentals (North America), Inc. Top agencies SSA (Social Security Administration)	$86,464	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
78	Industrial Heat Transfer, Inc. Top agencies DLA (Defense Logistics Agency)	$85,858	<0.1%	Rank history: #50 in FY2021, not on the FY2022 list, #16 in FY2023 and not on the FY2024 list; up 38 since FY2024.
79	Dt-Trak Consulting, Inc. Top agencies DOI (Department of the Interior)	$82,283	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
80	Fritsch GMBH Top agencies USAF (Department of the Air Force)	$76,301	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
81	Dela Technology Corporation Top agencies DLA (Defense Logistics Agency)	$69,708	<0.1%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2023 and not on the FY2024 list; returned.
82	I-2-I Solutions, Inc. Top agencies USAF (Department of the Air Force)	$69,420	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
83	Integrated Procurement Technologies Top agencies Navy (Department of the Navy)	$69,304	<0.1%	Rank history: #17 in FY2021 and not on the FY2022–FY2024 lists; returned.
84	Hydraulics International, Inc. Top agencies DLA (Defense Logistics Agency)	$61,830	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 26 since FY2024.
85	Cap 360 LLC Top agencies DLA (Defense Logistics Agency)	$59,950	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
86	GI Corporation Top agencies DLA (Defense Logistics Agency)	$59,294	<0.1%	Rank history: not on the FY2021–FY2023 lists and #76 in FY2024; down 10 since FY2024.
87	NCH Corporation Through Chem-Aqua Inc. Top agencies VA (Department of Veterans Affairs)	$54,957	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
88	Tyco Fire Products LP Through Johnson Controls, Inc. Top agencies VA (Department of Veterans Affairs)	$52,894	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
89	The Entwistle Company LLC Top agencies DLA (Defense Logistics Agency)	$52,762	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
90	Perron Contracting LLC Top agencies DOI (Department of the Interior)	$52,145	<0.1%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2024; down 55 since FY2024.
91	Siemens Aktiengesellschaft Through Siemens S.P.A. Top agencies Army (Department of the Army)	$51,067	<0.1%	Rank history: not on the FY2021 list, #14 in FY2022 and not on the FY2023–FY2024 lists; returned.
92	Campbell-Sevey Inc. Top agencies VA (Department of Veterans Affairs)	$50,733	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
93	GEC Industrial Boilers Top agencies DOS (Department of State)	$50,651	<0.1%	Rank history: #76 in FY2021, #74 in FY2022, #74 in FY2023 and #80 in FY2024; down 13 since FY2024.
94	Westex Group, Inc. Top agencies Navy (Department of the Navy)	$49,829	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
95	Sogen Company, Inc. Top agencies DLA (Defense Logistics Agency)	$49,255	<0.1%	Rank history: not on the FY2021–FY2023 lists and #81 in FY2024; down 14 since FY2024.
96	Trycon Enterprises, L.L.C. Top agencies DHS (Department of Homeland Security)	$47,850	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
97	Seahorse Defense Supply, LLC Top agencies DLA (Defense Logistics Agency)	$47,282	<0.1%	Rank history: #86 in FY2021, #47 in FY2022, not on the FY2023 list and #38 in FY2024; down 59 since FY2024.
98	Water Heater Distributors, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$47,051	<0.1%	Rank history: not on the FY2021 list, #65 in FY2022 and not on the FY2023–FY2024 lists; returned.
99	Aantilia LLC Top agencies Army (Department of the Army)	$45,967	<0.1%	Rank history: #53 in FY2021, #53 in FY2022, not on the FY2023 list and #34 in FY2024; down 65 since FY2024.
100	Taza Supplies Inc. Top agencies Army (Department of the Army)	$45,701	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.

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100 of 175 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 33241

Code	Net obligations	Largest contractor
332410 Power Boiler and Heat Exchanger Manufacturing	$2,192,673,403	Bechtel Corp

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $2.34 billion obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2025 ran Oct 1, 2024 – Sep 30, 2025. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2024. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2024 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 33241 contractors in FY2025?

1. Bechtel Corp ($2.14B), 2. Huntington Ingalls Industries, Inc. ($9.8M), 3. ECI Defense Group, Inc. ($7.95M), 4. Jgils, LLC ($3.63M), 5. Alfa Laval U.S. Holding Inc. ($2.93M), 6. Aqua-Chem, Inc. ($2.8M), 7. Graham Corp ($1.66M), 8. Terry Service, Inc. ($1.39M), 9. Evoqua Water Technologies LLC ($978K), 10. Renk Systems Corp ($750K).

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