Top 100 Contractors in NAICS 32512: Industrial Gas Manufacturing, FY2021

Name: Top 100 Contractors in NAICS 32512: Industrial Gas Manufacturing, FY2021
Creator: GovTribe

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

The top 10 won 65% of FY2021 NAICS 32512 contract dollars

Contract obligations: $150,629,504 Net of deobligations, by contracts coded NAICS 32512 or a code under it
Contractors: 234 Parent companies with an obligation
Largest contractor: Air Products and Chemicals, Inc. $41.4 million, 22.0% 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	Air Products and Chemicals, Inc. Top agencies NASA (National Aeronautics and Space Administration) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$41,428,553	22.0%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; up 1 since FY2020.
2	Praxair Distribution Inc. 11 awardees, including Linde Inc., Linde Gas & Equipment Inc. and Linde Gas Espana, S.A. Top agencies DLA (Defense Logistics Agency) NASA (National Aeronautics and Space Administration) HHS (Department of Health and Human Services)	$19,665,810	10.4%	Rank history: #2 in FY2022, not on the FY2023 list, #10 in FY2024 and not on the FY2025 list; up 1 since FY2020.
3	Airgas Inc. 21 awardees, including Airgas Usa, LLC, Air Liquide Industrial U.s. LP and Air Liquide America L.P. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Navy (Department of the Navy)	$18,486,866	9.8%	Rank history: #4 in FY2022, #13 in FY2023, #35 in FY2024 and #41 in FY2025; down 2 since FY2020.
4	RAS Enterprises LLC Top agencies VA (Department of Veterans Affairs) DOE (Department of Energy) Army (Department of the Army)	$11,549,222	6.1%	Rank history: #6 in FY2022, #5 in FY2023, #5 in FY2024 and #5 in FY2025; up 1 since FY2020.
5	Linde LLC 2 awardees, including Messer LLC and Messer Gas Puerto Rico Inc. Top agencies NASA (National Aeronautics and Space Administration) DLA (Defense Logistics Agency) Treasury (Department of the Treasury)	$11,039,753	5.9%	Rank history: #5 in FY2022, #2 in FY2023, #4 in FY2024 and #9 in FY2025; down 1 since FY2020.
6	Cliffside Refiners L P Top agencies DOI (Department of the Interior)	$6,000,000	3.2%	Rank history: #8 in FY2022, #4 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
7	Matheson TRI-Gas Inc. 4 awardees, including Nippon Sanso Matheson, Inc. and Nippon Sanso Deutschland GMBH Top agencies DLA (Defense Logistics Agency) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$5,416,879	2.9%	Rank history: #7 in FY2022, #12 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
8	CF Industries Holdings Inc. Through CF Industries Nitrogen LLC Top agencies DLA (Defense Logistics Agency)	$5,067,408	2.7%	Rank history: #3 in FY2022, #10 in FY2023, #14 in FY2024 and not on the FY2025 list; up 44 since FY2020.
9	Dixie Chemical Company, Inc. Top agencies DLA (Defense Logistics Agency)	$1,988,793	1.1%	Rank history: #16 in FY2022, #8 in FY2023, #12 in FY2024 and not on the FY2025 list; up 113 since FY2020.
10	Green Lantern, LLC Top agencies Army (Department of the Army) Commerce (Department of Commerce) HHS (Department of Health and Human Services)	$1,903,933	1.0%	Rank history: #12 in FY2022, #19 in FY2023, #15 in FY2024 and #19 in FY2025; up 1 since FY2020.
11	Inchcape Shipping Services Dubai LLC Top agencies DLA (Defense Logistics Agency)	$1,896,507	1.0%	Rank history: #14 in FY2022, #22 in FY2023, #16 in FY2024 and #23 in FY2025; up 1 since FY2020.
12	Global Gases Group FZE Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$1,877,072	1.0%	Rank history: #11 in FY2022, #14 in FY2023, #34 in FY2024 and #17 in FY2025; down 4 since FY2020.
13	RCG of North Carolina, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$1,334,171	0.7%	Rank history: #10 in FY2022, #7 in FY2023, #7 in FY2024 and #8 in FY2025; up 10 since FY2020.
14	Roberts Oxygen Co Inc. Top agencies HHS (Department of Health and Human Services) EPA (Environmental Protection Agency) DHS (Department of Homeland Security)	$1,261,755	0.7%	Rank history: #17 in FY2022, #17 in FY2023, #13 in FY2024 and #16 in FY2025; up 1 since FY2020.
15	ROY Smith Company Top agencies Army (Department of the Army)	$1,144,163	0.6%	Rank history: not on the FY2022 list, #15 in FY2023, #21 in FY2024 and #24 in FY2025; down 2 since FY2020.
16	Goodrich Gas Inc. Top agencies Army (Department of the Army)	$1,137,056	0.6%	Rank history: #13 in FY2022, #21 in FY2023, #24 in FY2024 and #28 in FY2025; up 6 since FY2020.
17	TMG Gases, Inc. Top agencies Army (Department of the Army) Commerce (Department of Commerce) HHS (Department of Health and Human Services)	$1,004,853	0.5%	Rank history: #46 in FY2022, #32 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
18	Messer LLC Top agencies NASA (National Aeronautics and Space Administration) DLA (Defense Logistics Agency)	$944,969	0.5%	Rank history: #53 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
19	R & M Government Services Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$910,612	0.5%	Rank history: #24 in FY2022, #55 in FY2023, #43 in FY2024 and #59 in FY2025; down 5 since FY2020.
20	The Gas Company, LLC Top agencies Navy (Department of the Navy)	$833,531	0.4%	Rank history: #15 in FY2022, #20 in FY2023, #33 in FY2024 and not on the FY2025 list; down 10 since FY2020.
21	Marianas Gas Corp Top agencies DHA (Defense Health Agency) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$759,121	0.4%	Rank history: #23 in FY2022, #23 in FY2023, #29 in FY2024 and #27 in FY2025; down 4 since FY2020.
22	Merrimac Petroleum, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$645,879	0.3%	Rank history: #21 in FY2022, #28 in FY2023, #30 in FY2024 and #43 in FY2025; up 40 since FY2020.
23	S.j. Smith Co., Inc. Top agencies Army (Department of the Army)	$616,257	0.3%	Rank history: #54 in FY2022, #34 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2020.
24	Medical Equipment & Supplies of America LLC Top agencies VA (Department of Veterans Affairs) Commerce (Department of Commerce) DOJ (Department of Justice)	$602,576	0.3%	Rank history: #18 in FY2022, #26 in FY2023, #23 in FY2024 and #22 in FY2025; up 7 since FY2020.
25	Strategic Consulting Alliances, LLC Top agencies Army (Department of the Army)	$543,631	0.3%	Rank history: #52 in FY2022, #29 in FY2023, #22 in FY2024 and #32 in FY2025; new, not ranked in FY2020.
26	Nexair LLC Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) DHA (Defense Health Agency)	$519,825	0.3%	Rank history: #30 in FY2022, #33 in FY2023, #26 in FY2024 and #33 in FY2025; up 11 since FY2020.
27	North American Refrigerants Inc. Top agencies NASA (National Aeronautics and Space Administration)	$494,400	0.3%	Rank history: not on the FY2022 list, #40 in FY2023, #19 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
28	Stripes Global, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$433,156	0.2%	Rank history: #87 in FY2022, #36 in FY2023, #27 in FY2024 and #30 in FY2025; down 4 since FY2020.
29	Diamond Geeks, Corp. Through Dgci Corporation Top agencies DLA (Defense Logistics Agency)	$411,680	0.2%	Rank history: #94 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
30	Kelvin International Corporation Top agencies Navy (Department of the Navy)	$384,393	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
31	International Gas & Services Top agencies DLA (Defense Logistics Agency)	$376,049	0.2%	Rank history: #31 in FY2022, #41 in FY2023, #46 in FY2024 and #39 in FY2025; up 2 since FY2020.
32	Chuo Shoko Co., Ltd Top agencies Navy (Department of the Navy)	$356,400	0.2%	Rank history: #33 in FY2022, #43 in FY2023, #50 in FY2024 and #49 in FY2025; up 17 since FY2020.
33	Cryo-Express, LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) Commerce (Department of Commerce)	$324,972	0.2%	Rank history: #28 in FY2022, #18 in FY2023 and not on the FY2024–FY2025 lists; down 14 since FY2020.
34	Nippon Sanso Matheson, Inc. Top agencies DLA (Defense Logistics Agency) NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$314,455	0.2%	Rank history: #83 in FY2022 and not on the FY2023–FY2025 lists; down 8 since FY2020.
35	Airgas Usa, LLC 2 awardees Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) Navy (Department of the Navy)	$294,945	0.2%	Rank history: #36 in FY2022, #3 in FY2023, #6 in FY2024 and #2 in FY2025; down 10 since FY2020.
36	Arc3 Gases, Inc. 5 awardees, including Arcet Equipment Co Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice) DHS (Department of Homeland Security)	$260,266	0.1%	Rank history: #39 in FY2022, #46 in FY2023, #48 in FY2024 and #42 in FY2025; up 40 since FY2020.
37	Norco Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) Navy (Department of the Navy)	$241,606	0.1%	Rank history: not on the FY2022 list, #42 in FY2023, #44 in FY2024 and #51 in FY2025; up 16 since FY2020.
38	Federal Resources Supply Company Top agencies DLA (Defense Logistics Agency)	$241,099	0.1%	Rank history: #43 in FY2022, #47 in FY2023, #41 in FY2024 and #71 in FY2025; up 25 since FY2020.
39	Buzwair Industrial Gases Factories Top agencies USAF (Department of the Air Force)	$236,567	0.1%	Rank history: #62 in FY2022, #58 in FY2023, #62 in FY2024 and not on the FY2025 list; up 9 since FY2020.
40	Haun Welding Supply Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) VA (Department of Veterans Affairs)	$229,996	0.1%	Rank history: #40 in FY2022, not on the FY2023 list, #80 in FY2024 and #36 in FY2025; up 21 since FY2020.
41	Select Gases, LLC Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$226,578	0.1%	Rank history: #55 in FY2022, #72 in FY2023, #59 in FY2024 and #61 in FY2025; up 3 since FY2020.
42	Capitol Carbonic Corp Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) Commerce (Department of Commerce)	$220,168	0.1%	Rank history: #50 in FY2022, not on the FY2023 list, #63 in FY2024 and #52 in FY2025; up 9 since FY2020.
43	Leland Limited Inc. Top agencies DLA (Defense Logistics Agency)	$208,315	0.1%	Rank history: #32 in FY2022, not on the FY2023 list, #11 in FY2024 and #37 in FY2025; up 25 since FY2020.
44	3T Federal Solutions LLC Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) Commerce (Department of Commerce)	$207,495	0.1%	Rank history: #79 in FY2022 and not on the FY2023–FY2025 lists; up 34 since FY2020.
45	AGP LLC Top agencies VA (Department of Veterans Affairs) EPA (Environmental Protection Agency)	$203,100	0.1%	Rank history: #60 in FY2022, #54 in FY2023, #67 in FY2024 and #62 in FY2025; up 12 since FY2020.
46	Eagle Home Medical Corp Top agencies VA (Department of Veterans Affairs)	$201,371	0.1%	Rank history: #26 in FY2022 and not on the FY2023–FY2025 lists; down 11 since FY2020.
47	Gallup Welders Supply Inc. Top agencies HHS (Department of Health and Human Services) DOI (Department of the Interior)	$197,503	0.1%	Rank history: #37 in FY2022, #48 in FY2023, #51 in FY2024 and #46 in FY2025; up 34 since FY2020.
48	General Distributing Co Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$188,868	0.1%	Rank history: #47 in FY2022, #64 in FY2023, #56 in FY2024 and #58 in FY2025; up 24 since FY2020.
49	Suburban Propane Partners, L.P Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$179,132	0.1%	Rank history: not on the FY2022–FY2023 lists, #88 in FY2024 and #75 in FY2025; up 24 since FY2020.
50	Reclamation Technologies Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$169,920	0.1%	Rank history: not on the FY2022–FY2025 lists; down 7 since FY2020.
51	Vienna Group LLC Top agencies Navy (Department of the Navy)	$162,500	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
52	Siemens Aktiengesellschaft Through Siemens Medical Solutions Usa, Inc. Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$155,418	0.1%	Rank history: not on the FY2022–FY2025 lists; up 37 since FY2020.
53	Veteran Chemicals, Inc. Top agencies Commerce (Department of Commerce) Army (Department of the Army)	$153,400	0.1%	Rank history: #56 in FY2022, #100 in FY2023 and not on the FY2024–FY2025 lists; up 22 since FY2020.
54	Haun Specialty Gases, Inc. Top agencies VA (Department of Veterans Affairs)	$152,838	0.1%	Rank history: #44 in FY2022, #60 in FY2023, #75 in FY2024 and #66 in FY2025; down 7 since FY2020.
55	Christopher I. Oyolokor SR. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) DOI (Department of the Interior)	$147,179	0.1%	Rank history: #25 in FY2022, #31 in FY2023, #37 in FY2024 and #35 in FY2025; down 14 since FY2020.
56	Focus Medical Gases LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$146,777	0.1%	Rank history: not on the FY2022 list, #84 in FY2023, not on the FY2024 list and #69 in FY2025; up 36 since FY2020.
57	Daiichi Kasei Sangyo Co.,Ltd. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$146,128	0.1%	Rank history: #88 in FY2022, #76 in FY2023, #79 in FY2024 and #78 in FY2025; up 27 since FY2020.
58	BSE Performance, LLC Top agencies DOI (Department of the Interior) Army (Department of the Army) Navy (Department of the Navy)	$145,333	0.1%	Rank history: #42 in FY2022, #50 in FY2023, #47 in FY2024 and #84 in FY2025; down 4 since FY2020.
59	Innovative Federal Operations Group, Incorporated Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) DOI (Department of the Interior)	$140,734	0.1%	Rank history: #65 in FY2022, #52 in FY2023, #39 in FY2024 and #38 in FY2025; down 4 since FY2020.
60	Reagent World, Inc. Top agencies Navy (Department of the Navy)	$140,484	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
61	Mcgas, L.L.C. Top agencies DOI (Department of the Interior)	$139,936	0.1%	Rank history: #49 in FY2022, #71 in FY2023, #78 in FY2024 and not on the FY2025 list; up 55 since FY2020.
62	Yorkshire Industries LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$136,765	0.1%	Rank history: not on the FY2022–FY2023 lists, #91 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
63	Wanklyn Oil Co. Inc. Top agencies Army (Department of the Army)	$136,442	0.1%	Rank history: #99 in FY2022, #66 in FY2023, #99 in FY2024 and #85 in FY2025; up 33 since FY2020.
64	Paula F Price Enterprises LLC Top agencies Army (Department of the Army)	$135,789	0.1%	Rank history: #9 in FY2022, #11 in FY2023, #9 in FY2024 and #10 in FY2025; down 34 since FY2020.
65	Air Korea Ind. Co., Ltd Top agencies USAF (Department of the Air Force)	$133,054	0.1%	Rank history: not on the FY2022–FY2025 lists; up 12 since FY2020.
66	General Air Service & Supply Co. Top agencies Commerce (Department of Commerce) Army (Department of the Army) USDA (Department of Agriculture)	$132,789	0.1%	Rank history: #77 in FY2022, #44 in FY2023, #72 in FY2024 and #45 in FY2025; up 97 since FY2020.
67	Nations Gas Technologies Inc. Top agencies HHS (Department of Health and Human Services)	$130,240	0.1%	Rank history: not on the FY2022–FY2025 lists; down 17 since FY2020.
68	Coastal Energy, Inc. Top agencies USAF (Department of the Air Force)	$129,599	0.1%	Rank history: #27 in FY2022, not on the FY2023 list, #57 in FY2024 and #29 in FY2025; up 30 since FY2020.
69	Okano, K.K. Top agencies DLA (Defense Logistics Agency) DHA (Defense Health Agency)	$128,720	0.1%	Rank history: #80 in FY2022, #49 in FY2023, #40 in FY2024 and #48 in FY2025; down 29 since FY2020.
70	Houston Diversified, LLC Top agencies Commerce (Department of Commerce)	$126,000	0.1%	Rank history: #74 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
71	Govage, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$119,540	0.1%	Rank history: #86 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
72	LN Curtis & Sons Top agencies USAF (Department of the Air Force)	$119,111	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
73	Ocenco Inc. Top agencies DLA (Defense Logistics Agency)	$118,800	0.1%	Rank history: #69 in FY2022 and not on the FY2023–FY2025 lists; down 15 since FY2020.
74	Galusha Technologies LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) VA (Department of Veterans Affairs)	$116,620	0.1%	Rank history: #75 in FY2022, #62 in FY2023 and not on the FY2024–FY2025 lists; up 64 since FY2020.
75	808 Solutions Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$110,940	0.1%	Rank history: #35 in FY2022, #35 in FY2023, #52 in FY2024 and #31 in FY2025; new, not ranked in FY2020.
76	Wisecom Technologies Inc. Top agencies USAF (Department of the Air Force)	$108,500	0.1%	Rank history: not on the FY2022–FY2025 lists; up 122 since FY2020.
77	LTE Medical Solutions (Pty) Ltd Top agencies OSD (Office of the Secretary of Defense)	$107,355	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
78	Linde Gas & Equipment Inc. Top agencies VA (Department of Veterans Affairs) EPA (Environmental Protection Agency) Army (Department of the Army)	$106,801	0.1%	Rank history: not on the FY2022–FY2023 lists, #18 in FY2024 and #15 in FY2025; down 57 since FY2020.
79	Central Welding Supply Company Top agencies Navy (Department of the Navy) EPA (Environmental Protection Agency)	$98,195	0.1%	Rank history: #72 in FY2022 and not on the FY2023–FY2025 lists; up 46 since FY2020.
80	Indiana Oxygen Company Inc. Top agencies Navy (Department of the Navy)	$94,230	<0.1%	Rank history: not on the FY2022 list, #89 in FY2023 and not on the FY2024–FY2025 lists; down 11 since FY2020.
81	United States Welding, Inc. 2 awardees Top agencies USDA (Department of Agriculture) Army (Department of the Army)	$92,052	<0.1%	Rank history: #67 in FY2022, #57 in FY2023, #55 in FY2024 and #60 in FY2025; up 50 since FY2020.
82	South-TEK Systems LLC Top agencies Navy (Department of the Navy)	$84,950	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
83	SDB Consultants, Ltd. Top agencies DLA (Defense Logistics Agency)	$82,613	<0.1%	Rank history: #98 in FY2022, #80 in FY2023 and not on the FY2024–FY2025 lists; up 25 since FY2020.
84	Berkshire Hathaway Inc. 2 awardees, including Pivotal Lng, LLC and Fatigue Technology, Inc. Top agencies NASA (National Aeronautics and Space Administration) DLA (Defense Logistics Agency)	$79,471	<0.1%	Rank history: not on the FY2022 list, #83 in FY2023, #42 in FY2024 and #99 in FY2025; new, not ranked in FY2020.
85	Fujimura Shoten, KK Top agencies DLA (Defense Logistics Agency)	$75,556	<0.1%	Rank history: #76 in FY2022, #97 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
86	Stoody Industrial & Welding Supply, Inc. Top agencies Navy (Department of the Navy) USSOCOM (United States Special Operations Command)	$73,397	<0.1%	Rank history: not on the FY2022–FY2023 lists, #89 in FY2024 and #97 in FY2025; up 21 since FY2020.
87	A & B Welding Supply LLC Top agencies VA (Department of Veterans Affairs)	$73,393	<0.1%	Rank history: #97 in FY2022 and not on the FY2023–FY2025 lists; up 52 since FY2020.
88	TV Guy Orlando, LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) DECA (Defense Commissary Agency)	$72,201	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 91 since FY2020.
89	Maine Oxy-Acetylene Supply Company Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs)	$70,439	<0.1%	Rank history: #82 in FY2022, #77 in FY2023, #70 in FY2024 and #50 in FY2025; up 15 since FY2020.
90	Noresco LLC Through Kidde Technologies, Inc. Top agencies DLA (Defense Logistics Agency)	$67,129	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
91	OZ Arc / Gas Equipment & Supply, Inc. 2 awardees Top agencies VA (Department of Veterans Affairs)	$67,089	<0.1%	Rank history: #61 in FY2022, #88 in FY2023 and not on the FY2024–FY2025 lists; up 27 since FY2020.
92	Southco & Assoc., Inc. Top agencies DOJ (Department of Justice)	$66,835	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
93	Keen Compressed Gas Co. Top agencies Treasury (Department of the Treasury)	$56,868	<0.1%	Rank history: #90 in FY2022, #81 in FY2023, not on the FY2024 list and #73 in FY2025; up 20 since FY2020.
94	Ferrellgas Partners L.P. Through Ferrellgas, L.P Top agencies Navy (Department of the Navy)	$56,362	<0.1%	Rank history: #59 in FY2022, #56 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2020.
95	Treadwell Corporation (Delaware) Top agencies DLA (Defense Logistics Agency)	$56,031	<0.1%	Rank history: #68 in FY2022, #70 in FY2023, #54 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
96	Wesley B Jones Electrical Inc. Top agencies Army (Department of the Army)	$55,511	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
97	Concorde Specialty Gases, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$54,810	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 40 since FY2020.
98	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency)	$54,720	<0.1%	Rank history: not on the FY2022 list, #67 in FY2023, not on the FY2024 list and #67 in FY2025; up 2 since FY2020.
99	Engineering, Procurement & Construction Inc. Top agencies DOE (Department of Energy)	$54,338	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	Welsco, Inc. Top agencies HHS (Department of Health and Human Services) Commerce (Department of Commerce)	$54,116	<0.1%	Rank history: #93 in FY2022, not on the FY2023 list, #65 in FY2024 and not on the FY2025 list; up 105 since FY2020.

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100 of 234 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 32512

Code	Net obligations	Largest contractor
325120 Industrial Gas Manufacturing	$150,629,504	Air Products and Chemicals, Inc.

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 $188 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 32512 contractors in FY2021?

1. Air Products and Chemicals, Inc. ($41.4M), 2. Praxair Distribution Inc. ($19.7M), 3. Airgas Inc. ($18.5M), 4. RAS Enterprises LLC ($11.5M), 5. Linde LLC ($11M), 6. Cliffside Refiners L P ($6M), 7. Matheson TRI-Gas Inc. ($5.42M), 8. CF Industries Holdings Inc. ($5.07M), 9. Dixie Chemical Company, Inc. ($1.99M), 10. Green Lantern, LLC ($1.9M).

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