Certification
ASME U-stamp fabricators
Required to build coded pressure vessels. Non-negotiable when it applies.
49 shops state they hold ASME U-stamp. Each entry below shows the sentence we read it from, on the shop's own website — we don't record a certification we can't quote. Confirm current status with the shop or the certifying body before you award work.
By state
Structural Steel Fabrication • Central IllinoisDecatur, Illinois
“Kelly holds R, U, S and PP stamps— we can work on your boilers, pressure vessels and pressure piping projects.”https://thekelly-group.com/metal-fabrication/
Also: ASME S-stamp · National Board R-stamp
Honhorst ServicesCincinnati, OH
“We hold ASME "U" & "S" stamps, and a National Board "R" stamp.”https://honhorst.com/fabrication
Also: ASME S-stamp · National Board R-stamp
Gulf Coast Steel, Inc.Houston, TX
“Certified by National Boiler association, we hold a "R" & "U" stamp to ensure our work complies with ASME and NBBI standards.”https://www.gulfcoaststeelinc.com/about
Also: National Board R-stamp · ISO 9001 · API2000 ton press brake12" max thickness
C & S Metal FabricatingHouston, TX
“We are also an ASME Section VIII Div 1 (U-Stamp) code shop as well as certified in vessel repairs and alterations (R-Stamp)”http://www.csmetalfab.com/
Also: National Board R-stamp · AWS D1.196" max thickness
Hi-Tec Industries OK LLCBroken Arrow, OK
“Our shop is able to meet welding procedures requiring the ASME 'U' stamp.”http://www.hitec-ok.com/
Also: ISO 9001 · AWS D1.1100 ton press brake
“All our pressure vessels are fabricated to the highest quality standards and are finished with the ASME U-Stamp.”https://tbailey.com/steel-fabrication/asme-pressure-vessel/
Also: National Board R-stamp · AWS D1.6 · API3" max thickness
Industrial Machine Shop in Baton Rouge, LABaton Rouge, Louisiana
“We are National Board Certified for ASME, S, U, and R Code Work”https://pipebends.com
Also: ASME S-stamp · National Board R-stamp
ASME Pressure Vessels & TanksDuette, Florida
“ASME Section VIII, Divisions 1 & 2: Accredited with "U," "R," and "S" code stamps, signifying compliance with rigorous manufacturing standards.”https://dixiesouthern.com
Also: ASME S-stamp · National Board R-stamp · API
plate workSalt Lake City, Utah
“our company is certified by AISC, ASME, API and the National Board.”https://www.bluestarsteel.com/about-us.html
Also: AISC certified · API
Matrix Service Inc - Fabrication DivisionCatoosa, OK
“ASME U Stamp – division I pressure vessels + equipment”https://www.matrixservice.com/services/fabrication/
Also: ASME S-stamp · API
Alloy FabricationsClinton, TN
“We are accredited by ASME and the National Board of Boiler and Pressure Vessel Inspectors, holding U, S, and R stamps, allowing us to build boilers, pressure vessels, and repair work.”https://alloyfabrications.com/facilities
Also: ASME S-stamp · National Board R-stamp500 ton press brake
TexFab, Inc. - Steel Plate Rolling - Houston, TXHouston, Texas
“Tex-Fab, Inc. is well-suited to design and fabricate ASME Power Boilers and ASME Pressure Vessels. We adhere to ASME design codes, including: ASME Section 1 – Power Boiler, ASME Section VIII Div. 1 and Div. 2 – Pressure Vessels, National Board R Stamp.”https://texfab.com
Also: ASME S-stamp · National Board R-stamp9" max thickness
International Custom ControlsTulsa, OK
“We are certified to design and build equipment with ASME U, S, and R stamps”http://www.intlcustomcontrols.com/about
Also: ISO 9001 · ASME S-stamp · National Board R-stamp · AWS D1.1
Rode Welding Inc.Elk Grove Village, IL
“ASME Code Section VIII, Division 1, "U" Code Stamp”https://www.rodewelding.com/about-us/
Also: ASME S-stamp24" max thickness
“Our goals for the future are to utilize our ASME U/S/R stamp by building more ASME vessels and utilizing our S stamp for taking on specialty piping projects.”https://www.pcwelding.com/about
Also: ASME S-stamp · National Board R-stamp
Weldforce FabricatorsHouston, TX
“ASME U Certification - This acceptance and certification is symbolized by the "U Stamp" for pressure vessels. The U Code Symbol on a vessel is used to confirm that the stamped item is in conformance to the latest edition of the Code and that the pressure vessel has been designed and manufactured in accordance with ASME.”https://www.weldforcegroup.com/certification
Also: National Board R-stamp
Riggins CompanyHampton, VA
“Riggins Company is an ASME Code fabrication shop and we hold Section VIII "U" and "U2" stamps as well as National Board's "R" stamp.”https://www.rigginscompany.com/industrial-condensers
Also: National Board R-stamp
“Roben Manufacturing is UL, API, and ASME code certified and acknowledged worldwide for producing conventional and proprietary Reactors, Pressure Vessels, Tanks, Columns and Heat Exchangers as well as specialty sub-components in various alloys up to 200 tons.”https://robenmfg.com
Also: API · ISO 9001
South Carolina Metal FabricationColumbia, South Carolina
“ASME Section VIII, Div 1, ASME U-Stamp (Pressure Vessel), R-Stamp (Repair)”https://carolinafab.com/our-quality/
Also: National Board R-stamp
ASME Pressure Vessels: Repairs & FabricationMendon, Michigan
“Certified for the fabrication of new pressure vessels to ASME Section VIII, Division 1 requirements.”https://jergenspiping.com/industrial/tanks-vessels-asme/
Also: National Board R-stamp · AWS D1.1
ACME Fabrication & Welding LLCAlvin, TX
“ACME Fabrication and Welding is a National Board Member, and ASME Certified manufacturer of pressure vessels. ACME holds the ASME "U" & "R" Stamp Certifications and is a leading manufacturer of custom pressure vessels, designed and built to our customer's specifications.”https://acmewelding.com/capabilities/pressure-vessels/
Also: National Board R-stamp
Bise Welding & FabricatingHouston, TX
“Bise currently has an ASME "U", "U2", "R" and "S" Code stamps.”http://www.bisewelding.com/
Also: ASME S-stamp · National Board R-stamp2.75" max thickness
Dixie Weld Fab, Inc.Belcher, LA
“We are accredited by the ASME and are certificate holders of the "U" and "S" stamps, as well as the National Board "R" stamp.”http://www.dixieweldfab.net/
Also: ASME S-stamp · National Board R-stamp
“Rexarc owns ASME code certificates "U" and "U2" and National Board Stamp "R".”https://rexarc.com/product-category/stainless-steel-fabrication-services/
Also: National Board R-stamp1.75" max thickness
Meyer Tool & Mfg.Oak Lawn, IL
“ASME Boiler & Pressure Vessel Code "U" Stamp”https://www.mtm-inc.com/
ASME Code Pressure Vessels | U-Stamped Certified FabricatorPerris, California
“With proven track record and certifications including ISO 9001:2015 and the prestigious ASME U Stamp, we are specialised in providing the highest standards of quality and on time delivery in every project of process systems, modular skid assembly, ASME pressure vessels, and industrial pipe spools.”https://ppvcorp.com
Also: ISO 9001
ASME Pressure Vessel Fabrication - Los Angeles, CALos Angeles, California
“Built to your specifications, every Altam Pressure Vessel is designed and fabricated in accordance with ASME (Section VIII, Division 1) and receives thorough inspection by both our In-house Quality Control and an authorized California State inspector.”https://altammfg.com/capabilities/asme-pressure-vessel-fabrication/
Steel Services, North TexasRhome, Texas
“We utilize the latest innovative design and fabrication techniques to create A.S.M.E. certified pressure vessels and tanks that meet your custom specifications”https://keystonesynergy.com
Also: AISC certified400 ton press brake
“American Society of Mechanical Engineers (ASME) U-Stamp certification for miniature pressure vessels, safety valves, rupture discs”https://universaltank.com/asme-testing-certifications/
Also: National Board R-stamp1.5" max thickness
ASME Pressure Vessel - Custom ASME Tank Fabrication - CB MillsGurnee, Illinois
“Our Quality Assurance program is in accordance with our ASME quality control manual for all of our work, code and non-code alike.”https://cbmills.com/custom-steel-fabrication
260 ton press brake
Custom Heliarc Inc.Brookshire, TX
“We are ASME Section VIII Division 1 "U" and "R" authorized and National Board registered.”http://customheliarcinc.com/
Also: National Board R-stamp3.5" max thickness
East Coast Welding & Construction Co Inc.Glen Burnie, MD
“Our business is R Stamp and ASME S, H, and U Stamp certified.”https://www.eastcoastweldingandconstruction.com/
Also: National Board R-stamp · ASME S-stamp
Sigma ManufacturingMarietta, GA
“Sigma Manufacturing is an ASME U, S, and R, AWS D1.1, and CSA W47.1 Certified Fabrication Facility”http://www.sigmamanufacturing.com/
Also: ASME S-stamp · AWS D1.1
Liberty Welding & Iron Works Co.Metairie, LA
“Liberty Welding can assist with ASME Boiler and Pressure Vessel repair on site or at our facility in Metairie, LA.”https://www.liberty-welding.com/services-5
Universal Welding & EngineeringWaukesha, WI
“our team is certified to meet AWS and ASME standards.”https://www.universal-welding.com/?=GBP
8" max thickness
Boilermatic Welding Industries, Inc.Bellport, NY
“Boilermatic is an ASME certified shop with U, H, and S stamps in addition to R and NB National Board certifications.”https://www.boilermatic.com/about-us
Also: ASME S-stamp · National Board R-stamp
Boilermatic Welding IndustriesMedford, NY
“Boilermatic is an ASME certified shop with U, H, and S stamps in addition to R and NB National Board certifications.”https://www.boilermatic.com/about-us
Also: ASME S-stamp · National Board R-stamp
Superior Steel Products, Inc.: Custom Steel & Aluminum TanksCaldwell, Idaho
“ASME Code Shop w/ "R" & "U" Stamps”https://ssproducts.com/about/
Also: National Board R-stamp
“All our work maintains full compliance with ASME Section VIII and API 650 standards.”https://www.gilbertindustries.com/services/on-site-fabrication
Also: API
D&N FabricationSapulpa, OK
“ASME Code R, U, & S Stamp”http://dnfabrication.com/services
Also: ASME S-stamp · National Board R-stamp
ASME Pressure Vessels - Mason ManufacturingDecatur, Illinois
“Mason Manufacturing maintains an independently audited Quality Control system and is authorized to use both "U" and "R" stamps for custom fabrication and repair under ASME Section VIII, division 1.”https://www.masonmfg.com
Also: National Board R-stamp
Spokane Stainless TechnologiesSpokane Valley, WA
“Our tanks and process vessels meet ASME, API, NSF, and FDA standards to keep you compliant.”https://www.spokanestainless.com/
Also: API
Boardman Inc.Oklahoma City, OK
“Boardman holds ASME Section VIII Div. I and Div. II certifications for pressure vessel fabrication.”http://www.boardmaninc.com/?utm_source=googlemybusiness&utm_medium=organic&utm_campaign=gmb
Also: ASME S-stamp
West Metal Works IncBuffalo, NY
“ASME Section VIII, Div. 1 U-Stamp Certificate No. 4011”https://www.westmetalworks.com/
Also: National Board R-stamp
Oxley & Son Welding & FabricatingSandy, UT
“We are ASME/AWS certified and insured.”http://www.oxleyandsonwelding.com/
Ramco Fabricators, Inc.Colfax, NC
“Ramco is a Certified ASME Code Section VIII Div. I shop, allowing us to design and build quality National Board registered pressure vessels and tanks of all shapes and sizes.”http://www.ramcofabricators.com/
West Warwick Welding IncWest Warwick, RI
“Manufactured to meet ASME and NB standards, these closures minimize downtime and boost productivity, making them ideal for industries that demand high performance.”https://westwarwickwelding.com/services/quick-actuating-heads
Johnstone Company, Inc.North Haven, CT
“ASME "U" & "R" Stamp Pressure Vessels”https://johnstonecompany.com/
MacLean WeldingBlasdell, NY
“As an approved and certified as an ASME Code manufacturer of pressure vessels, our team can deliver your project, on-spec and on time.”https://macleanwelding.com/
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