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Resistance Welding Fabricators

Last edit date: 5/8/2026
Resistance Welding Fabricator Welding Machine ID
(Serial Number)		 Rebar Type Rebar Size(s) Small Diameter Hoop Qualification
(2.5ft or smaller)
Expiration Date		 Large Diameter Hoop Qualification
(Larger than 2.5ft)
Expiration Date		BABA Act Information*
CMC Rebar - San Bernardino
(San Bernardino)		S102ASTM A706 #4, #5, #6, #7, #8 Not authorized Expired on 10/3/2025Unconfirmed
ST 32ASTM A706 #4, #5, #6, #7, #8 Not authorized Expired on 7/8/2024Unconfirmed
UM000677ASTM A706 #7, #8 Not authorized Expired on 4/28/2023Unconfirmed
Welder #N101ASTM A706 #4, #5, #6, #7, #8 10/10/2026 10/10/2026Unconfirmed
ASTM A706 #9 Not authorized 10/10/2026Unconfirmed
Conco Companies
(Benicia)		H6182ASTM A706 #4 7/16/2026 Not authorizedUnconfirmed
ASTM A706 #5 10/10/2026 Not authorizedUnconfirmed
ASTM A706 #6, #8 Not authorized 11/8/2026Unconfirmed
ASTM A706 #7 Not authorized Expired on 12/29/2025Unconfirmed
Martinez Steel Corporation
(Fontana)		F-3612ASTM A706 #4, #7 Expired on 6/6/2025 Not authorizedUnconfirmed
ASTM A706 #6, #7 Not authorized 9/30/2026Unconfirmed
ASTM A706 #7 9/30/2026 Not authorizedUnconfirmed
Martinez Steel Corporation
(Fresno)		UM002761ASTM A706 #5, #6, #7, #8 Not authorized 9/30/2026Unconfirmed
ASTM A706 #6, #7 9/30/2026 Not authorizedUnconfirmed
ASTM A706 #7, #8 Not authorized Expired on 11/20/2023Unconfirmed
Mission City Rebar
(Livermore)		18801ASTM A706 #4, #5, #6 Expired on 6/7/2021 Expired on 6/7/2021Unconfirmed
RKR Steel Welding
(Bloomington)		F3377ASTM A706 #4, #5, #6 9/30/2026 9/30/2026Unconfirmed
ASTM A706 #7, #8 Not authorized Expired on 3/31/2021Unconfirmed
ASTM A706 #7, #8, #9 Not authorized 9/30/2026Unconfirmed
TNT Rebar Company
(Colton)		H5746RASTM A706 #4, #5, #6, #7 8/28/2026 8/28/2026Unconfirmed
ASTM A706 #8 Not authorized 8/28/2026Unconfirmed

NOTE:

This table was prepared to provide a reference source for resistance (flash) welded rebar splice fabricators currently authorized for use by California Department of Transportation ("Caltrans"). Caltrans assumes no liability or responsibility for the accuracy or validity of this information if used by other entities.

Caltrans contact: Structural Materials Testing Lab, smtl@dot.ca.gov

*As attested to by the supplier as of April 14, 2026 per definition in 2 CFR 184 and 23 CFR 635.410. Stakeholders should use this information in conjunction with corresponding Caltrans special provision section 6-1.04 to understand applicable requirement for the project.

The California Department of Transportation (Caltrans) is implementing statutory changes required by the Bipartisan Infrastructure Law -Build America, Buy America Act (BABA), as outlined in 2 CFR 184 and 23 CFR 635.410.

https://www.fhwa.dot.gov/construction/cqit/buyam.cfm