Top 100 Contractors in NAICS 332420: Metal Tank (Heavy Gauge) Manufacturing, FY2021

Name: Top 100 Contractors in NAICS 332420: Metal Tank (Heavy Gauge) Manufacturing, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 73% of FY2021 NAICS 332420 contract dollars

Contract obligations: $33,544,160 Net of deobligations, by contracts coded NAICS 332420
Contractors: 157 Parent companies with an obligation
Largest contractor: Isometrics Inc. $7.85 million, 23.1% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Isometrics Inc. Top agencies Army (Department of the Army)	$7,853,840	23.1%	Rank history: not on the FY2022–FY2023 lists, #1 in FY2024 and #1 in FY2025; new, not ranked in FY2020.
2	Essex Industries Inc. Top agencies USAF (Department of the Air Force)	$5,298,785	15.6%	Rank history: not on the FY2022–FY2025 lists; down 1 since FY2020.
3	Kelvin International Corporation Top agencies Navy (Department of the Navy)	$4,856,415	14.3%	Rank history: #1 in FY2022, not on the FY2023 list, #27 in FY2024 and not on the FY2025 list; unchanged since FY2020.
4	Fourinox, Inc. Top agencies Navy (Department of the Navy)	$1,455,000	4.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
5	Riggins Company, L.C. Top agencies Navy (Department of the Navy)	$1,372,766	4.0%	Rank history: not on the FY2022 list, #28 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
6	Aaecon General Contracting LLC Top agencies USAF (Department of the Air Force)	$995,799	2.9%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
7	Maro & Associates Inc. Top agencies DLA (Defense Logistics Agency)	$841,772	2.5%	Rank history: #8 in FY2022, not on the FY2023 list, #32 in FY2024 and not on the FY2025 list; down 3 since FY2020.
8	GTA Containers, Inc. Top agencies DLA (Defense Logistics Agency)	$784,455	2.3%	Rank history: not on the FY2022 list, #46 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
9	Prentex Alloy Fabricators, Inc. Top agencies USAF (Department of the Air Force) DOT (Department of Transportation)	$651,837	1.9%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
10	Star Capital Defense Contracting and General Maintenance LLC Top agencies USAF (Department of the Air Force)	$584,806	1.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
11	Avid Ironworks, Inc. Top agencies USDA (Department of Agriculture)	$573,800	1.7%	Rank history: #15 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
12	Aerolab LLC Top agencies Navy (Department of the Navy)	$492,300	1.4%	Rank history: not on the FY2022 list, #48 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
13	Lockheed Martin Corporation Top agencies NASA (National Aeronautics and Space Administration)	$333,891	1.0%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
14	General Distributing Co Top agencies HHS (Department of Health and Human Services)	$274,458	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
15	Cryo Associates Inc. Top agencies USDA (Department of Agriculture) Navy (Department of the Navy) HHS (Department of Health and Human Services)	$249,677	0.7%	Rank history: #16 in FY2022 and not on the FY2023–FY2025 lists; up 12 since FY2020.
16	American Autoclave Co., Inc. Top agencies USAF (Department of the Air Force)	$249,428	0.7%	Rank history: not on the FY2022–FY2025 lists; up 34 since FY2020.
17	Innovative People and Technology Corporation Top agencies Commerce (Department of Commerce)	$240,237	0.7%	Rank history: not on the FY2022–FY2025 lists; up 17 since FY2020.
18	Hunter Defense Technolog Through Berg Manufacturing, Inc. Top agencies DLA (Defense Logistics Agency)	$234,038	0.7%	Rank history: not on the FY2022–FY2025 lists; up 51 since FY2020.
19	Inflation Systems, Inc. Top agencies DLA (Defense Logistics Agency)	$230,859	0.7%	Rank history: #11 in FY2022, #19 in FY2023, #8 in FY2024 and #9 in FY2025; up 139 since FY2020.
20	Mass Tank Inspection Services LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$206,868	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
21	Pipestone Equipment, LLC Top agencies DOI (Department of the Interior)	$196,515	0.6%	Rank history: #6 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
22	D.w. Boyd Corporation Top agencies Navy (Department of the Navy)	$191,093	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
23	Nugen Companies LLC Top agencies USAF (Department of the Air Force)	$180,375	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
24	HRD Aero Systems, Inc. Top agencies Navy (Department of the Navy)	$177,754	0.5%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
25	RTX Corporation Through B / E Aerospace, Inc. Top agencies Navy (Department of the Navy)	$170,580	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
26	Gemini Fiberglass Inc. Top agencies DOI (Department of the Interior)	$157,382	0.5%	Rank history: not on the FY2022–FY2025 lists; up 75 since FY2020.
27	Certified Stainless Service Inc. Top agencies Army (Department of the Army)	$151,514	0.4%	Rank history: not on the FY2022–FY2025 lists; up 19 since FY2020.
28	Applied Pressure Vessels, Inc. Top agencies Navy (Department of the Navy)	$148,760	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
29	Aquaneering Inc. Top agencies DOI (Department of the Interior) Commerce (Department of Commerce)	$144,357	0.4%	Rank history: #96 in FY2022, #63 in FY2023 and not on the FY2024–FY2025 lists; up 27 since FY2020.
30	MPC Group LLC Through MPC Containment Systems LLC Top agencies DLA (Defense Logistics Agency)	$137,125	0.4%	Rank history: #9 in FY2022 and not on the FY2023–FY2025 lists; down 25 since FY2020.
31	Ametek Inc. 2 awardees, including Ametek Ameron, LLC and Sunpower, Inc. Top agencies Navy (Department of the Navy) Smithsonian (Smithsonian Institution) NASA (National Aeronautics and Space Administration)	$136,982	0.4%	Rank history: #14 in FY2022, #14 in FY2023, #74 in FY2024 and #35 in FY2025; down 7 since FY2020.
32	Mascott Equipment Company, Inc. Top agencies DOI (Department of the Interior)	$129,954	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
33	Kirila Fire Inspection & Testing Inc. Top agencies USAF (Department of the Air Force)	$128,000	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
34	Valin Corp Top agencies USAF (Department of the Air Force)	$125,354	0.4%	Rank history: not on the FY2022–FY2025 lists; down 21 since FY2020.
35	Echelon Supply and Service, Inc. Top agencies DLA (Defense Logistics Agency)	$118,973	0.3%	Rank history: #99 in FY2022, #44 in FY2023 and not on the FY2024–FY2025 lists; up 52 since FY2020.
36	Maine Oxy-Acetylene Supply Company Top agencies Navy (Department of the Navy)	$118,582	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
37	Theodor Wille Intertrade GMBH Through Atlantic Diving Supply, Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$117,083	0.3%	Rank history: not on the FY2022 list, #10 in FY2023, #19 in FY2024 and not on the FY2025 list; down 26 since FY2020.
38	American Trading Service Inc Through American Trading Services, Inc. Top agencies DLA (Defense Logistics Agency)	$113,991	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
39	DJB Gas Services, Inc. Top agencies Army (Department of the Army)	$113,419	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
40	Avon Engineered Fabrications LLC Through Aef-Performance LLC Top agencies DLA (Defense Logistics Agency)	$109,219	0.3%	Rank history: not on the FY2022–FY2023 lists, #22 in FY2024 and not on the FY2025 list; down 30 since FY2020.
41	Progressive Recovery Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$92,199	0.3%	Rank history: #10 in FY2022, #9 in FY2023, #13 in FY2024 and not on the FY2025 list; up 7 since FY2020.
42	Bhayana Brothers LLC Top agencies USAF (Department of the Air Force)	$91,200	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
43	Lmt, Inc. Top agencies DOI (Department of the Interior)	$84,284	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
44	American Fabrication Inc. Top agencies DOI (Department of the Interior)	$84,100	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
45	R P M Supply Corporation Top agencies DLA (Defense Logistics Agency)	$84,000	0.2%	Rank history: #7 in FY2022, #8 in FY2023, #11 in FY2024 and #37 in FY2025; down 13 since FY2020.
46	Zemarc Corporation Top agencies DLA (Defense Logistics Agency)	$83,325	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
47	Praxair Distribution Inc. Through Linde Special Projects LLC Top agencies USAF (Department of the Air Force)	$74,556	0.2%	Rank history: #29 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
48	W. & O. Supply Inc. Through The Hiller Companies LLC Top agencies DLA (Defense Logistics Agency)	$73,318	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
49	Mayers Industries Corp Top agencies Army (Department of the Army)	$71,670	0.2%	Rank history: #82 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
50	Cryofab Inc. Top agencies Commerce (Department of Commerce)	$69,180	0.2%	Rank history: #19 in FY2022, not on the FY2023–FY2024 lists and #93 in FY2025; new, not ranked in FY2020.
51	Big Easy Trading Co Top agencies USAF (Department of the Air Force)	$68,318	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
52	Marcon International (USA) Inc Top agencies DOI (Department of the Interior)	$67,164	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
53	Jamaica Bearings Co., Inc. Top agencies Navy (Department of the Navy)	$66,720	0.2%	Rank history: #21 in FY2022, not on the FY2023 list, #56 in FY2024 and #38 in FY2025; new, not ranked in FY2020.
54	B & H International LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$66,163	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
55	PIK Rite Inc. Top agencies DOI (Department of the Interior)	$61,924	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
56	Memco, Inc. Top agencies Army (Department of the Army)	$60,195	0.2%	Rank history: #33 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
57	Pars Consulting Engineers, Inc. Top agencies Army (Department of the Army)	$59,228	0.2%	Rank history: #77 in FY2022 and not on the FY2023–FY2025 lists; down 8 since FY2020.
58	Neumayer Equipment Company Top agencies VA (Department of Veterans Affairs)	$58,101	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
59	Nilofer Battiwala Top agencies Army (Department of the Army)	$54,396	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
60	Aantilia LLC Top agencies Navy (Department of the Navy)	$53,903	0.2%	Rank history: #53 in FY2022, not on the FY2023–FY2024 lists and #39 in FY2025; up 24 since FY2020.
61	Caldaia Controls LLC Top agencies VA (Department of Veterans Affairs)	$53,100	0.2%	Rank history: #65 in FY2022, not on the FY2023 list, #85 in FY2024 and #60 in FY2025; new, not ranked in FY2020.
62	Metadure Parts & Sales, Inc. Top agencies DLA (Defense Logistics Agency)	$50,590	0.1%	Rank history: #47 in FY2022, #31 in FY2023, #49 in FY2024 and #36 in FY2025; up 13 since FY2020.
63	Lanzen, Incorporated Top agencies DLA (Defense Logistics Agency)	$49,910	0.1%	Rank history: not on the FY2022 list, #54 in FY2023, not on the FY2024 list and #63 in FY2025; new, not ranked in FY2020.
64	Nidaz LLC Top agencies Army (Department of the Army)	$48,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
65	SRM Manufacturing, Inc. Top agencies DOI (Department of the Interior)	$46,700	0.1%	Rank history: not on the FY2022 list, #87 in FY2023, not on the FY2024 list and #16 in FY2025; down 23 since FY2020.
66	Merrimac Petroleum, Inc. Top agencies Army (Department of the Army)	$45,720	0.1%	Rank history: #79 in FY2022, #49 in FY2023 and not on the FY2024–FY2025 lists; up 16 since FY2020.
67	Insparisk, LLC Top agencies USAF (Department of the Air Force)	$43,790	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
68	Dunamiz DWC LLC Top agencies USAF (Department of the Air Force)	$42,998	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
69	M.r. Crafts, Inc. Top agencies VA (Department of Veterans Affairs)	$42,920	0.1%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
70	SAFRAN Through Air Cruisers Company, LLC Top agencies DLA (Defense Logistics Agency)	$42,761	0.1%	Rank history: #78 in FY2022, #17 in FY2023 and not on the FY2024–FY2025 lists; down 63 since FY2020.
71	Martin Military Inc. Top agencies DLA (Defense Logistics Agency)	$42,471	0.1%	Rank history: #24 in FY2022, #42 in FY2023, #90 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
72	Wagner Land and Development Company Inc. Top agencies DOI (Department of the Interior)	$39,334	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
73	Red Orange North America Inc. Top agencies DOI (Department of the Interior)	$37,294	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
74	DW Metal Works Inc. Top agencies DOI (Department of the Interior)	$37,160	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
75	Raokhan International Company WLL Top agencies USAF (Department of the Air Force)	$36,203	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
76	Christopher I. Oyolokor SR. Top agencies NASA (National Aeronautics and Space Administration)	$34,937	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
77	Bashiti Hardware Top agencies USAF (Department of the Air Force)	$32,825	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
78	Teal, LLC Top agencies DOI (Department of the Interior)	$30,904	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
79	Alum-Line, Inc. Top agencies DOI (Department of the Interior)	$30,668	0.1%	Rank history: #23 in FY2022 and not on the FY2023–FY2025 lists; up 10 since FY2020.
80	Blackstone Capital Holdings (Jordan) LLC Top agencies USAF (Department of the Air Force)	$30,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
81	PCX Inc. Top agencies DLA (Defense Logistics Agency)	$28,509	0.1%	Rank history: #37 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
82	Cu.bo S.R.L. Top agencies Navy (Department of the Navy)	$28,403	0.1%	Rank history: #57 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
83	Qspac Industries Inc. Top agencies USAF (Department of the Air Force)	$27,744	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
84	The American Tank & Fabricating Company Top agencies Navy (Department of the Navy)	$27,062	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
85	Danaher Corporation Through Pall Corp Top agencies DOI (Department of the Interior)	$25,818	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
86	Sage Oil Vac Inc. Top agencies USDA (Department of Agriculture)	$24,700	0.1%	Rank history: #60 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
87	Tecniplast Usa, Inc. Top agencies DOI (Department of the Interior)	$24,009	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
88	Dresser-Argus, Inc. Top agencies DLA (Defense Logistics Agency)	$22,500	0.1%	Rank history: not on the FY2022–FY2025 lists; up 51 since FY2020.
89	Steel Tank & Fabricating Corporation Top agencies Army (Department of the Army)	$21,873	0.1%	Rank history: not on the FY2022–FY2024 lists and #44 in FY2025; new, not ranked in FY2020.
90	Top Office Pros Business Services Inc. Top agencies DOJ (Department of Justice)	$21,836	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
91	John M. Ellsworth Co., Inc. Top agencies DOI (Department of the Interior)	$21,771	0.1%	Rank history: #70 in FY2022, #86 in FY2023 and not on the FY2024–FY2025 lists; down 19 since FY2020.
92	MDM Mac Enterprises Inc. Top agencies USDA (Department of Agriculture)	$19,735	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
93	Hydraulics International, Inc. Top agencies DLA (Defense Logistics Agency)	$19,624	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
94	S I T Corporation Top agencies DLA (Defense Logistics Agency)	$19,087	0.1%	Rank history: not on the FY2022–FY2024 lists and #59 in FY2025; up 1 since FY2020.
95	GTA Drum, Inc. Top agencies DLA (Defense Logistics Agency)	$18,318	0.1%	Rank history: not on the FY2022–FY2024 lists and #51 in FY2025; new, not ranked in FY2020.
96	Environmental Tectonics Corp Top agencies DOT (Department of Transportation)	$18,159	0.1%	Rank history: #13 in FY2022, #32 in FY2023, #30 in FY2024 and #22 in FY2025; down 76 since FY2020.
97	EOS Inc. Through Sidecar Enterprises Inc. Top agencies DLA (Defense Logistics Agency)	$17,955	0.1%	Rank history: not on the FY2022–FY2025 lists; down 18 since FY2020.
98	Water Specialties, Inc. Top agencies USAF (Department of the Air Force)	$17,440	0.1%	Rank history: #83 in FY2022, #93 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2020.
99	A.l.p. Services, LLC Top agencies USDA (Department of Agriculture)	$17,253	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	Hydraulic & Fabrication Services Inc. Top agencies Navy (Department of the Navy)	$17,177	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.

Show 75 more

100 of 157 contractors listed here. See the rest on GovTribe.

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 $34 million 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. 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 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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 332420 contractors in FY2021?

1. Isometrics Inc. ($7.85M), 2. Essex Industries Inc. ($5.3M), 3. Kelvin International Corporation ($4.86M), 4. Fourinox, Inc. ($1.46M), 5. Riggins Company, L.C. ($1.37M), 6. Aaecon General Contracting LLC ($996K), 7. Maro & Associates Inc. ($842K), 8. GTA Containers, Inc. ($784K), 9. Prentex Alloy Fabricators, Inc. ($652K), 10. Star Capital Defense Contracting and General Maintenance LLC ($585K).

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