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Steam Locomotion in the 21st Century

The Recent History of Steam Locomotive Development

International Steam Locomotive Construction, Repair,
Maintenance, and Parts Links & Resources

Updated 11 February 2022

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Disclaimer- These links are provided for information only and no endorsement of any particular company or individual is intended.

Do your own research prior to selecting a contractor for any steam work.

Index of suppliers by service/supply name at the bottom of the page

Companies are listed in USA unless otherwise specified

       
AAMSCO Lighting
AD Piston Ring
All-Pro Services, Ltd.
Anderson Tube Co.
Backshop Enterprises
Boothbay Rwy Museum
Boothman & Johnson
Champion Rivet Co.
Continental Fabricators
Curran Castings
Dampflokwerk Meiningen
Dillon Boiler services
Diversified Rail Services
DLM
FMW Solutions, Inc.
FOMAS
Gagnon, Inc.
Glenbrook
Grand Canyon RR
Hartford Steam Boiler
Hawaiian Steam Eng.
Holman Boiler Works
INTERLOK
Iron Horse Water Treatment
Wayne James
Jay-Cee Sales & Rivet
Lathrop & Associates
the Locomotive Works
Mainline Steam
J.M.Michaels, P.E.
Modern Steam Tech. Railway Services
Multipower International
NBBPVI
Northwest Staybolt
Opti-Lube
PG Rail

 
Steam Engine Lubrication Specialities
Pittsburg Air Brake
Preston Services
Railway Wheelset
Ram Gaskets
Riley & Sons Eng.
Rizzoli Locomotive Works
Starfire Rail
Sistersville Tank Works
Steam Eng. Lub. Specialties
Steam Loco Design
Steam Loc. Services
Steam Op. Corp.
Steam Services of America
Steam Technologies
Stockton Locomotive Works

Strasburg RR
Sumpter Valley Machine Works
Terlyn Industries
Thorne International
TVRM
Tweetsie RR
Vapor Locomotive Company
Wasatch Railroad Contractors
Western Locomotive Supply
Western Maryland Scenic Railroad
Willis Engineering


Company/address Capabilities

AAMSCO Lighting, Inc.
(see webpage for contact info)

Company produces specialty light bulbs for steam locomotive applications such as headlights and water gauge lamps.
AD Piston Ring
(see webpage for contact info)

Makes custom piston rings for all applications, including steam locomotives.  Cast iron and bronze aluminum material is available.


All-Pro Services Ltd.
#408-1515 Broadway Street
Port Coquitlam, B.C.
V3C 6M2
Phone (604) 468-1446
Fax (604) 468-1447
Email robert.jang@all-proservices.ca

We do all the boiler work from fabrication, welding, re-tubes, rivet work etc. on steam locomotives.

Anderson Tube Company
(see webpage for contact info)
Stocking distributor of quality American-made boiler tubes.

Backshop Enterprises

Bernie Watts
(see webpage for contact info)
Specializes in repair and replacement of steam locomotive applicances, including air compressors, governors, lubricators, and injectors.
Boothman & Johnson Specialty Products
(see webpage for contact info)
Manufacturer of steam whistles. Also specializes in the repair or complete duplication of your old whistle

Boothbay Railway Museum
586 Wiscasset Road, Route 27
Box 123
Boothbay, Maine 04537
e-mail: shop@railwayvillage.org
phone: Brian Fanslau 207-633-4727
Boiler surveys and calculations, boiler tube removal and installation, wheel & tire replacement, press work up to 50 tons, piston rings, ultrasonic thickness testing, consultations, and more.  As of June 2005  Boothbay now has an ASME "S" stamp and a NBIC "R" stamp.  Boothbay has performed work on the 7470 at Conway Scenic Railroad and is fabricating a boiler for the Wiscasset, Waterville & Farmington Railway museum.

 

Champion Rivet Co
(see webpage for contact info)
U.S. rivet maker in business since the 1890's. Makes rivets new to order. Most steam locomotive boiler repairers (as well as shipyards on the Great Lakes) buy their rivets from them. (18 January 2011- Webpage for company is no longer active- company may be out of business.)
Continental Fabricators
(see webpage for contact info)
Continental Fabricators has a proven record of excellence in the design and fabrication of pressure vessels, towers, drums, clips, weldments and nozzle assemblies.

No matter the size of your project, the experienced professionals at Continental Fabricators will plan, design, fabricate, and ship your project.

Performed major boiler work on US Sugar 4-6-2 no. 148. Currently fabricating the boiler for the Pennsylvania Railroad T1 Steam Locomotive Trust project.


Curran Castings
Larry J. Curran
214 Curran Lane
Knox, PA 16232-9202
Telephone: (814) 782-3862
Fax: (814) 782-3749

Brass bell cleaning and polishing, bell cradle cleaning and repair, replacement finials, brass bells bought and sold. Custom castings made - small quantities welcome. Number and Builders Plates, small railroad wheels

Dampflokwerk Meiningen
(see webpage for contact info)
A company in Germany which offers a variety of steam locomotive repair services, including complete new steam locomotive construction.

Dillon Boiler Services
380 Crawford St
Fitchburg, MA 01420
(978) 400-0041
(website not working)
Industrial boiler service company; has done steam locomotive repairs.

Diversified Rail Services
Gary P. Bensman
(see Facebook page for contact info)
This company is run by Gary Bensman, and has performed numerous heavy repairs on U.S. steamers. DRS also sells specialty lubricants for steam locomotives.

Dampflokomotiv und Maschinenfabrik AG DLM
(see webpage for contact info)
Manufacture of new rack and/or adhesion steam locomotives incorporating state-of-the-art engineering. Comprehensive rebuilding and modernization of existing locomotives. 
FMW Solutions, Inc.
(see webpage for contact info)
FMW Solutions LLC (FMW) was organized in 2016 to provide innovative solutions to clients in need of rail industry mechanical services. The three principals of FMW offer more than 50 years of experience in the field of railroad mechanical service, engineering design, and strategic planning. This expertise spans a diverse body of work including Class I railroad diesel-electric locomotive repair, short line diesel-electric locomotive inspection and repair, total steam locomotive overhaul, and railroad mechanical equipment consulting.

FOMAS
500 Wallace Way
York, SC  29745
Phone 803-684-3133
Toll-free: 800-727-6333
FAX: 803-684-1000
Email salesusa@fomasgroup.com
Formerly Ajax Rolled Ring. A custom manufacturer of seamless rolled rings that are used in a variety of critical industrial components including bearing races, gears, flanges, and valve seat rings for end-use markets such as the bearing industry, power-generation including steam and gas-turbine, wind energy, mining and construction equipment, oil & gas, petrochemical, defense, rail transportation (steam locomotive tires), and a wide variety of general industrial applications.


Gagnon Inc.
(see webpage for contact info)
Refractory/ceramic company has previously made new high-tech arch bricks for former Milwaukee Road 4-8-4 no. 261. Ask to speak to Mark Gagnon.

Glenbrook Vintage Railway
(see webpage for contact info)
Steam repairs in New Zealand.

Grand Canyon Railway
(see webpage for contact info)
Due to new management, Grand Canyon's steam operations were significantly cut back in 2008. Unknown if their locomotive shop still does contract work.

Hartford Steam Boiler Inspection & Insurance Company
(see webpage for contact info)
Provides insurance against losses from accidents to boilers, pressure vessels and a wide variety of mechanical and electrical machinery and equipment. Provides boiler inspection services.

Hawaiian Steam Engineering Company

Matthew Austin
President and Chief Mechanical Engineer
P. O. Box 2711
Honolulu, HI 96803
Phone 808-941-0880
Steam locomotive boiler design, analysis and inspection services.

Holman Boiler Works, Inc.
(see Facebook page for contact info)
Located in Dallas, Texas, USA, with offices in Houston and Corpus Christi. Holman does boiler work and can fabricate new superheater units for locomotives.

(Note- Holman was acquired by boiler manufacturer Cleaver-Brooks in 2014.)


INTERLOK
BAHNCONSULTING
(see webpage for contact info)

- Steam locomotives std gauge and narrow gauge from POLAND
- spare parts for steam locomotives
- narrow gauge equipment, such as summer gondolas, hand pump cars NEW BUILT
- repair workshop in POLAND, examples of steam locos recently restored
- diesel locomotives std gauge and narrow gauge from POLAND
- freight cars std gauge from POLAND, BULGARIA, SLOVACIA

Information about historical agricultural items, such as:
- LANZ BULLDOG original tractors, as well as 100 percent REPLICA of 1921 1-cylinder tractor, being built by a Polish specialist on demand
- steam rollers, stationary steam machines etc.


Iron Horse Water Treatment Inc.
1105 South Eaton Court
Lakewood, Colorado USA  80232
Phone: 303-378-2460
fax: 720-294-0631
Cell: 303-378-2460
Email: billbondie@ironhorsewater.com

Company operated by Bill Bondie since retiring from the US Navy as a submarine nuclear engineer. Bill has been working with steam railroads and marketing the TERLYN LSB Steam Locomotive Boiler Water Treatment Program. According to Bill: "This stuff really keeps the insides of the boilers CLEAN.   At present, over 150 steam locomotives worldwide use this program.    The number has been doubling every year just from referrals." Bill has references from more than a dozen satisfied locomotive operators. Bill has been actively involved in the restoration of 4 locomotives to running condition.   He works full time at Backshop Enterprises rebuilding and building new steam locomotive appliances.   Bill says his 26 years experience with operating, troubleshooting and repairing steam locomotive boilers can greatly assist operators/designers.   


Wayne James
Gettysburg, PA
717-624-4910
Email: jamesgang@netrax.net
Wayne James is a pattern maker in Gettysburg, PA, who has a selection of reproduction number and builder’s plates patterns already on hand, as well as the ability to make more to order. He pours in aluminum himself, but has worked with Zimmerman Foundry in Columbia, PA to produce bronze plates.


Jay-Cee Sales & Rivet Inc.
phone: 800-521-6777
Fax 248-478-6416
Jay-Cee Sales & Rivet maintains the nation's largest in-stock inventory, supplying rivets and special fasteners since 1948. Offer any type, any metal, any size. Full line of rivet tools and accessories.

Lathrop and Associates
Charlotte, NC
E-mail: irondave@bellsouth.net
"Iron Dave" Lathrop's company. Dave does inspections and repair of steam locomotives. E-mail him at: irondave@bellsouth.net

The Locomotive Works

P O Box 21638
Umtentweni 4235 South Africa
Tel & Fax: +27 39 695 2920
Cellular   : +27 82 640 3320

e-mail:
sean3450@webmail.co.za
Assessments, repairs, maintenance and rebuilds of steam and diesel locomotives. Also included are consultancy/evaluation services relating to railways in general.  

Mainline Steam
23 Cheshire Street Parnell
Auckland  1001
New Zealand
Ph. 64-9-270 5592
Has imported South African locos and British coaches to New Zealand for rebuilding

J.M.Michaels, P.E.
Consulting & Erecting Engineer
P.O. Box 413
Shandaken, New York 12480 USA
phone/fax 845-688-2334
email:
shebruin@worldnet.att.net  
Services: Mechanical Engineering as applied to the evaluation of existing boilers; performing calculations for the US FRA Form 4; designing repairs/modifications to steam locomotive boilers; designing (or "reverse engineering") of other steam locomotive parts.  Has done work for Valley RR, New York,Susquehanna & Western RR, Belfast & Moosehead Lake RR, Western Maryland Scenic RR, California Western RR, Empire State Railway Museum, and PRR K4s Number 1361.

Modern Steam Technical Railway Services
Mr Nigel A. H. Day
(see PDF for contact info)
PDF brochure courtesy of Martyn Bane's Steam & Travel Pages:

http://www.martynbane.co.uk/modernsteam/nday/MSTRS.pdf


Multipower International, Inc.
(see webpage for contact info)
Steam locomotives and spare parts, used Chinese class QJ 2-10-2's, JS and JF 2-8-2's, and SL and RM 4-6-2's. New class SY 2-8-2's (price on request). Spare parts including lubricators, injectors, superheater units, air compressors, and others.


The National Board of Boiler and Pressure Vessel Inspectors
The licensing board for boiler inspectors in the U.S. Site includes a database of all contractors licensed to do boiler work in the U.S. Search the database to check the status of a contractor's license, "R" stamp, etc.


Northwest Staybolt Co.

P. O. Box 1345
Belfair, WA, USA 98528
nwstaybolt@reachone.com
phone 360-427-1727
Manufactures rigid and flexible staybolts, staybolt sleeves, staybolt caps, and copper gaskets.

Opti-Lube
(see webpage for contact info)
Makers of block grease for use in locomotive rod bearings and grease-lubricated driving box cellars.  See here for additional info:  http://opti-lube.com/block-grease.html


Pittsburgh Air Brake Company, Inc. (PABCO)

(see webpage for contact info)
A.R. certified to rebuild and test older valves such as those used on schedule 6ET, as well as various triple and control valves, P, L, M, U-12, etc.

PRESTON SERVICES
(see webpage for contact info)
Suppliers of steam engines, spares, and services

Railway Wheelset & Brake Ltd

(see website for contact info)
Located in the UK. Supplies a variety of equipment for railway service, including wheelset components such as wheels, axles, and tires; vacuum brake equipment such as cylinders and parts, hoses, valves and parts, composition brake blocks, and airbrake equipment for freight cars.

Ram Gaskets
(see webpage for contact info)
Custom gasket manufacturer and material supplier

Riley & Son (E) Ltd
(see webpage for contact info)
Located in the UK, Riley has done heavy work and supplied parts for numerous British tourist railways as well as several in the U.S.
Rizzoli Locomotive Works, LLC
(see webpage for contact info)
Rizzoli Locomotive Works manufactures steam whistles built to your specifications since 1975.  Let us help you give your locomotive a voice!

Starfire Rail
Lawrence, KS
785-842-1111
Structural and mechanical engineering design and analysis services for design of new steam locomotives, repairs or modification to existing steam locomotives, tenders, support cars, and other equipment, systems and parts.  Includes analysis, drawing production, Form 4 calculations, and document production. Additional areas of expertise include drawgear, brake systems, suspensions, safety appliances, mechanical, pneumatic, and electrical systems, freight cars, long-haul passenger cars, maintenance of way equipment, shop machinery and equipment.

Sistersville Tank Works
Sistersville, WV

(see webpage for contact info)
Custom ASME Pressure Vessels, Heat Exchangers and API Tanks. Currently fabricating new boiler for former Buffalo Creek & Gauley no. 4. Has previously fabricated new boilers for Cass Scenic Railway.

Steam Engine Lubrication Specialties

(owner Bill Petitjean retired several years ago and the company apparently ceased operations)
See Steam Services of America and Diversified Rail Services for steam locomotive lubricants.
Steam Loco Design
(see webpage for contact info)
Steam Loco Design is led by consultant design engineer Ian Gaylor who has a lifetime of experience in both mechanical engineering design and steam locomotive operation. One-time Head of Mechanical Engineering at Cranfield Institute of Technology's Product Engineering Centre he is currently, in addition to his work with Steam Loco Design, a Senior Consultant with a leading European technology and management consultancy.

Ian has more than thirty-five years experience of working as a volunteer engineman on many lines including the Festiniog, West Somerset, Leighton Buzzard and Bure Valley Railways. Over the years he has been involved in many locomotive restoration projects, volunteering his engineering design expertise and skills as a fitter. He also has extensive experience of training footplate staff and has produced training materials which are in use at several lines. Steam Loco Design provides a complete range of services covering engineering design for steam locomotives and railway rolling-stock.

Steam Locomotive Services, Inc.

J. David Conrad
23 Blake Street
Ivoryton, CT, USA 06442
phone 860-767-2429
FAX 860-767-0104
Steam Locomotive inspections, appraisals, and acquisitions. Imported locomotives and parts.

Steam Operations Corporation
Scott Lindsay, President
(see webpage for contact info)
Website updated 5/30/04. Operated by Scott Lindsay, formerly with the Norfolk Southern steam program. From the new website: "Steam locomotive repairs. the nation's leading firm devoted to the restoration, rebuilding, and preservation of steam locomotives, turntables, and other historic railroad equipment and the management of historic railroad collections.  Steam Operations offers unparalleled experience, a commitment to quality and value, and a breadth of services unequaled throughout the industry."


Steam Services of America
(see webpage for contact info)
Steam Services of America offers one of the most complete lists of parts and services in the industry. With more than 25 years in the "business" we can offer service in all most every aspect of tourist rail operations. We handle complete rail-up restorations on steam locomotives and passenger cars. We can organize and streamline your operation to better serve your customers and increase the bottom line. Steam Services of America also offers a complete line of steam locomotive parts and greases.

Steam Technologies

(see webpage for contact info)
German company operated by engineer Maik Drechsel who has extensive international project management experience with steam turbine installations.

Using electronic equipment, Steam Technologies generates in-service indicator diagrams of steam locomotives to evaluate their performance, and to allow optimum setting of valve events.  In the UK and US, creation of indicator diagrams was something done only by locomotive companies testing new designs rather than used for valve setting during maintenance.  In Germany, nearly every loco had to pass a test run with indicator after an extensive overhaul on engine parts.  Most other railways preferred to adjust the valve gear only by measuring of the valve travel and port openings in dead centers which seems to be more straightforward.

Nowadays with up-to-date measurement possibilities, this relationship is reversed. Mounting the electronic indicator, doing test runs in both driving directions and evaluating the diagrams takes no more time than try to place the motion best (what is absolutely necessary) in the dead centers and measure the valve travel.  Indicator diagrams are the most reliable method to rate the quality and correct setting of valve gear.

This system is able to directly display the indicated horsepower of a engine which makes it a valuable tool for performance testing and improvements.


Strasburg Railroad Mechanical Shop
(see webpage for contact info)
ASME "S" stamp, and NBIC "R" stamp holder. Boilers designed, built and repaired. FRA Form 4's calculated. Supplier of certified boiler parts (superheater units, flanged sheets, flexible stay bolts, caps, sleeves, etc.). Consolidated safety valves built and repaired. Sellers type injectors built and repaired. Steam locomotives designed, built, restored, and overhauled. Complete locomotive wheel shop. P & K type triple valves, and 6ET brake equipment repaired and tested. Wooden bodied freight and passenger cars designed, built and restored. Reproduction car stoves, seats, and window hardware made. Movie work done.

Stockton Locomotive Works
(see Facebook page for contact info)
Provides steam locomotive operational services, machine work, boiler work, and supplies. Located in Antonito, CO.


Sumpter Valley Machine Works
Scott Hutton, Chief Mechanical Officer
(see webpage for contact info)
S.V.M.W. can provide nearly all of the services needed to get your steam locomotive repaired or rebuilt including:
  • Complete and accurate FRA Form 4 evaluations and calculations
  • Certified ASME Section IX welding procedures
  • Complete overhaul of a locomotive's running gear
  • Major firebox and boiler repair
  • Ultrasonic thickness testing
  • Boiler surveys

Terlyn Industries, Inc.
(see webpage for contact info)
Steam locomotive boiler treatment; single liquid to be added to tender.


Tennessee Valley Railroad
4119 Cromwell Road
Chattanooga TN 37421
Phone: 423-894-8028 Voice
423-622-5973 (shop voice)
Fax: 423-894-8029 Fax

E-mail: Mark Ray at AW90H@cs.com

The wheel shop at TVRM is equipped with a Niles AQJ90 Journal Turning Lathe (serial number 23536, built 1948) for turning driving wheel journals and hubs; a Niles QB90 Quartering and Crank Pin Turning Machine (serial number 23549, built 1948) for turning steam locomotive crank pins; and a Niles AW90 Heavy Driving Wheel Lathe (serial number 23520, built 1945) for profiling of tires and truing of driving wheel centers.  The wheel lathe was obtained from the B&O's Glenwood Shop in 1982.  The other two machines were obtained from Poland in 1995.  They had been part of an order of 30 machines (10 of each type) that were sold to Poland as part of the Polish Restoration and Recovery Program following WWII (and before Stalin dropped the Iron Curtain). All 3 machines were rebuilt with the wheel lathe being returned to service in January of this year.  Since then, TVRM has performed machining operations for the 2719, 1522, 6325, 1702, 203, and just recently, the CPR 2816.

Ask for General Foreman George Walker at the shop.


Thorne International
Boiler Services Limited

Bilston
West Midlands
WV14 0RQ
England.

Tel: 44 (0)1902 404223
Fax: 44 (0)1902 404224
email: info@tibsltd.com
TIBS have a vast experience of supplying replacement parts & spares for many different types of locomotives around the world.


Tweetsie Railroad
Locomotive Shop
300 Tweetsie Railroad Lane
Blowing Rock, NC 28605
Phone 1-828-264-0944
Fax 1-828-264-0900
Shop for the amusement park "Tweetsie Railroad" in Blowing Rock, NC. These guys perform serious steam work. Official source for Crown Locomotive Works locomotive parts.
Vapor Locomotive Company
(see website for contact info)
 
VLC is a global leader in modern steam-reciprocating prime movers and related systems including:
  • Design, manufacture, and implementation of new steam engines
  • Installation, service, and efficiency upgrades for existing steam engines
  • Solid and liquid fuel combustion systems for steam locomotives
  • Atmospheric exhaust systems for induced draft boilers
  • New steam-reciprocating electric locomotives

We also offer installation and service of single stage and multi-stage turbines.


Wasatch Railroad Contractors
(see website for contact info)
Wasatch Railroad Contractors provides a variety of services including steam locomotive and boiler repair, cosmetic restoration, rolling stock repair, equipment move services, training manual design and many other computer graphics services. We have experience with smaller amusement park locomotives as well (Crown, Cagney, etc.)

Western Locomotive Supply

sales@westernlocomotivesupply.com
 
Producing high quality steam whistles and locomotive fittings.

Western Maryland Scenic Railroad
(see webpage for contact info)

Completed rebuild of Western Maryland 2-6-6-2 #1304 as well as other engines.

Willis Engineering
(see webpage for contact info)
Willis has built steam locomotives from N/G 7 1/4" up and rebuilt full size locos, 3' 6" & 4' 8 1/2".

If you know of any other companies specializing in the commercial repair of steam locomotives, please e-mail me at whodom2001[at]yahoo[dot]com

Index of Supplies, Parts, and Services

Air Compressors
Backshop Enterprises
Multipower International
Steam Services of America

Appliances
Backshop Enterprises
FMW Solutions, Inc.
INTERLOK
Multipower International
Narrow Gauge Supply
Strasburg RR
Steam Loc. Services
West-Side Locomotive Corporation

Appraisals
Steam Loc. Services

Arch bricks
Gagnon, Inc.

Bells, bell repair
Larry Curran

Boilers, boiler repairs
Continental Fabricators
Dillon Boiler services
FMW Solutions, Inc.
Hartford Steam Boiler
Hawaiian Steam Eng
Holman Boiler Works
INTERLOK
J.M.Michaels, P.E.
NBBPVI
Sistersville Tank Works
Starfire Eng. & Tech.
Steam Services of America
Strasburg RR
Stockton Locomotive Works
Thorne International
West-Side Locomotive Corporation

Boiler tubes
Anderson Tube Co.

Brakes
Backshop Enterprises
Pittsburg Air Brake
Railway Wheelset
Strasburg RR

Builder's Plates
Wayne James

Crankpin repair & turning
Strasburg RR
TVRM

Design services
Arizona Mechanical Engineering
Hawaiian Steam Eng
J.M.Michaels, P.E.
William L. Petitjean, P.E.
Starfire Eng. & Tech.
Strasburg RR
Tranex Turismo

Drawings & Graphic Services
Starfire Eng. & Tech.

Ejectors
--

Firedoors
Multipower International
Strasburg RR

General Repair & Overhaul
Dampflokwerk Meiningen
Diversified Rail Services
FMW Solutions, Inc.
Grand Canyon RR
INTERLOK
Mainline Steam
Mt. Ranier Scenic RR
Riley & Sons Eng.
Steam Op. Corp.
Stockton Locomotive Works
Strasburg RR
Tweetsie RR
Western Maryland Scenic Railroad
Willis Eng.

Grates
--

Hoses
Railway Wheelset

Injectors
Steam Services of America
Strasburg RR

Inspection
Diversified Rail Services
FMW Solutions, Inc.
Hartford Steam Boiler
Hawaiian Steam Eng
Lathrop & Associates
J.M.Michaels, P.E.
Mt. Ranier Scenic RR
Starfire Eng. & Tech.
Steam Loc. Services
Steam Services of America
Strasburg RR


Insurance
Hartford Steam Boiler

Lights
AAMSCO

Literature
--

Locomotives, new
DLM
Multipower International
Narrow Gauge Supply
Strasburg RR
Vapor Locomotive Company
West-Side Locomotive Corporation

Locomotives, used
Multipower International

Lubricants
Diversified Rail Services
Steam Services of America

Lubricators
Backshop Enterprises
Multipower International
Narrow Gauge Supply
Steam Services of America

Modifications, Modernization
DLM
Steam Loco Design

Narrow Gauge
Tweetsie RR

New Locomotives
DLM

Packing, piston rod
--

Piston Rings
AD Piston Ring

Railway development
Tranex Turismo

Rivets
Champion Rivet Co.

Safety valves
Strasburg RR
West-Side Locomotive Corporation

Staybolts
Northwest Staybolt
Steam Services of America
Strasburg RR
West-Side Locomotive Corporation

Superheaters
Holman Boiler Works
Multipower International
Steam Services of America
Strasburg RR

Tires, steam locomotive
FOMAS

Testing, Indicator Diagrams
Steam Technologies

Turbogenerators
Multipower International
Steam Services of America

Valves
Railway Wheelset

Water treatment
Iron Horse Water Treatment
Porta Treatment
Terlyn Industries

Welding
Strasburg RR

Wheels, wheel repair
FMW Solutions, Inc.
Railway Wheelset
Strasburg RR
TVRM
West-Side Locomotive Corporation

Whistles
Boothman and Johnson
Multipower International
Rizzoli Locomotive Works
Steam Services of America
Western Locomotive Supply