Results found: 1

Twining, Inc.

Long Beach, California

View Accreditation Certificate
Corey Rhodes
3310 E. Airport Way Long Beach , California 90806

Phone: (562) 426-3355 Fax: crhodes@twininginc.com http://www.twininglabs.com

Quality Management System - accredited since 3/1/2001
R18, C1077 (Aggregate), C1077 (Concrete), C1093 (Masonry), C1222 (Cement), D3666 (Aggregate), D3666 (Asphalt Mixture), D3740 (Soil), E329 (Aggregate), E329 (Asphalt Mixture), E329 (Concrete), E329 (Masonry), E329 (Soil), E329 (Sprayed Fire-Resistive Material), E329 (Steel Inspection)

Pavement Preservation - accredited since 7/21/2020
TB-100 / D3910/D6372 (Wet Track Abrasion Of Slurry Surfacing Systems)

Asphalt Mixture - accredited since 10/31/2005
R47, R68, T30, T164, T166, T209, T245, T246, T247, T269, T275, T308, T329, T355, D1188, D1560 (Stability), D1561, D2041, D2172, D2726, D2950, D3203, D3549, D5444, D6307, D6926, D6927

Soil - accredited since 10/31/2005
R58, T88, T89, T90, T99, T100, T134, T135, T180, T190, T191, T208, T216, T236, T265, T267, T310, D421, D422, D558, D559, D698, D854, D1140, D1556, D1557, D1633, D2166, D2216, D2435, D2487, D2488, D2844, D2974, D3080, D4318, D4546, D4829, D4972, D6913, D6938, D7928

Aggregate - accredited since 3/1/2001
R76, R90, T11, T19, T21, T27, T84, T85, T96, T104, T112, T113, T176, T210, T255, T304, T335, C29, C40, C70, C88, C117, C123, C127, C128, C131, C136, C142, C535, C566, C702, C1252, D75, D2419, D3744, D4791, D5821

Sprayed Fire-Resistive Material - accredited since 6/1/2010
E605, E736

Concrete - accredited since 3/1/2001
M201, R39, R60, R100 (Beams), R100 (Cylinders), R115, T22, T24 (Drilling Cores of Concrete), T24 (Testing Drilled Cores of Concrete), T97, T119, T121, T148, T152, T160, T196, T197, T198, T231 (8000 psi and below), T277, T303, T309, T325, T336, T345, T347, C31 (Beams), C31 (Cylinders), C39, C42 (Drilling Cores of Concrete), C42 (Testing Drilled Cores of Concrete), C78, C138, C143, C157, C172, C173, C174, C192, C231, C305, C403, C469, C495, C496, C511, C512, C567, C597, C617 (8000 psi and below), C642, C805, C827, C876, C939 (Pre-Mixed), C940, C942 (Pre-Mixed), C1040, C1064, C1074, C1090, C1140 (Obtaining and Testing Specimens), C1202, C1231 (7000 psi and below), C1260, C1293, C1383, C1567, C1581, C1583, C1604, C1609, C1610, C1611, C1621

Ultra-High Performance Concrete - accredited since 4/21/2025
C1856 (Sampling), C1856 (Thermal Treatment), C1856-C31 (Cylinders), C1856-C39, C1856-C42 (Testing Drilled Cores of Ultra-High Performance Concrete), C1856-C157, C1856-C191, C1856-C192 (Cylinders), C1856-C341, C1856-C469, C1856-C511, C1856-C512, C1856-C1202, C1856-C1437, C1856-C1609

Cement - Physical Tests - accredited since 4/29/2004
M201, R71, R115, T106, T107, T129, T131, T133, T137, T153, T154, T186, T192, C109, C151, C183, C185, C187, C188, C191, C204, C266, C305, C430, C451, C452, C511, C1012, C1038, C1437, C1702

Pozzolan - Physical Tests - accredited since 2/10/2014
M201, R115, T106, T107, T129, T133, T160, T192, C109, C151, C157, C187, C188, C305, C311 (Moisture Content), C430, C511, C1012, C1437

Slag Cement - accredited since 2/10/2014
M201, R115, T106, T133, T137, T192, C109, C185, C188, C305, C430, C511, C1038, C1437

Masonry - accredited since 5/19/2006
C109 (Compressive Strength of Hydraulic Cement Mortars (Using 2-in. Cube Specimens))
C140 (Full-Size Concrete Masonry Units) (Sampling and Testing Concrete Masonry Units and Related Units)
C185 (Air Content of Hydraulic Cement Mortar)
C305 (Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency)
C426 (Linear Drying Shrinkage of Concrete Masonry Units)
C511 (Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the testing of Hydraulic Cements and Concretes)
C780 (Annex 1) (Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry - Consistency by Cone Penetration)
C780 (Annex 6 - Cubes) (Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry - Compressive Strength of Cubes)
C780 (Annex 6 - Cylinders) (Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry - Compressive Strength of Cylinders)
C1012 (Length Change of Hydraulic-Cement Mortars Exposed to a Sulfate Solution)
C1019 (Sampling and Testing Grout)
C1314 (Prisms Constructed of Full-Size Concrete Masonry Units) (Compressive Strength of Masonry Prisms)
C1437 (Flow of Hydraulic Cement Mortar)
C1506 (Water Retention of Hydraulic Cement-Based Mortars and Plasters)
C1552 (Capping Concrete Masonry Units, Related Units and Masonry Prisms for Compression Testing)

Iron and Steel - accredited since 2/23/2009
M270-T266 / A709-E23 (Structural Steel: Charpy V-Notch)
A615-CT670 (Carbon-Steel Bars, Deformed and Plain: Testing Mechanical and Welded Splices)
A706-CT670 (Low Alloy Steel Bars, Deformed and Plain: Testing Mechanical and Welded Splices)
A615 (Carbon-Steel Bars, Deformed and Plain: Unit Weight)
A706 (Low Alloy Steel Bars, Deformed and Plain: Unit Weight)
A775 (Epoxy Coated Reinforcing Bars: Coating Flexibility (Bend Test))
A775 (Epoxy Coated Reinforcing Bars: Film Thickness)
A1064 (Deformed Steel Wire: Bend Test)
A1064 (Deformed Steel Wire: Unit Weight)
A1064 (Plain Steel Wire: Bend Test)
A1064 (Welded Deformed Steel Wire: Bend Test)
A1064 (Welded Deformed Steel Wire: Unit Weight)
A1064 (Welded Deformed Steel Wire: Weld Shear)
A1064 (Welded Plain Steel Wire: Bend Test)
A1064 (Welded Plain Steel Wire: Weld Shear)
A709-A6 (Structural Steel: Tension (Elongation))
A709-A6 (Structural Steel: Tension (Ultimate Tensile Strength))
A709-A6 (Structural Steel: Tension (Yield Strength))
A123-A90 (Zinc Coatings on Iron and Steel: Thickness of Zinc (Stripping))
A563-E18 (Internally Threaded Fasteners (Nuts): Rockwell Hardness)
A775-G62 (Epoxy Coated Reinforcing Bars: Coating Continuity (Holidays))
A563-F606 (Internally Threaded Fasteners (Nuts): Proof Load Determination)
A615-A370 (Carbon-Steel Bars, Deformed and Plain: Tension (Elongation))
A615-A370 (Carbon-Steel Bars, Deformed and Plain: Tension (Ultimate Tensile Strength))
A615-A370 (Carbon-Steel Bars, Deformed and Plain: Tension (Yield Strength))
A615-E290 (Carbon-Steel Bars, Deformed and Plain: Bend Test)
A706-A370 (Low Alloy Steel Bars, Deformed and Plain: Tension (Elongation))
A706-A370 (Low Alloy Steel Bars, Deformed and Plain: Tension (Ultimate Tensile Strength))
A706-A370 (Low Alloy Steel Bars, Deformed and Plain: Tension (Yield Strength))
A706-E290 (Low Alloy Steel Bars, Deformed and Plain: Bend Test)
A970-A370 (Headed Steel Bars: Tension (Elongation))
A970-A370 (Headed Steel Bars: Tension (Ultimate Tensile Strength))
A970-A370 (Headed Steel Bars: Tension (Yield Strength))
A1064-A370 (Deformed Steel Wire: Tension (Ultimate Tensile Strength))
A1064-A370 (Deformed Steel Wire: Tension (Yield Strength))
A1064-A370 (Plain Steel Wire: Tension (Reduction of Area))
A1064-A370 (Plain Steel Wire: Tension (Ultimate Tensile Strength))
A1064-A370 (Plain Steel Wire: Tension (Yield Strength))
A1064-A370 (Welded Deformed Steel Wire: Tension (Ultimate Tensile Strength))
A1064-A370 (Welded Deformed Steel Wire: Tension (Yield Strength))
A1064-A370 (Welded Plain Steel Wire: Tension (Reduction of Area))
A1064-A370 (Welded Plain Steel Wire: Tension (Ultimate Tensile Strength))
A1064-A370 (Welded Plain Steel Wire: Tension (Yield Strength))
A416-A1061 (Steel Strand, Uncoated Seven-Wire: Tension (Elongation))
A416-A1061 (Steel Strand, Uncoated Seven-Wire: Tension (Ultimate Tensile Strength))
A416-A1061 (Steel Strand, Uncoated Seven-Wire: Tension (Yield Strength))
A615-A1034 (Carbon-Steel Bars, Deformed and Plain: Testing Mechanical Splices)
A706-A1034 (Low Alloy Steel Bars, Deformed and Plain: Testing Mechanical Splices)
F3125 (Externally Threaded Fasteners (Bolts): Rotational Capacity)
F436-E18 (Hardened Steel Washers: Rockwell Hardness)
F3125-E18 (Externally Threaded Fasteners (Bolts): Rockwell Hardness)
F1554-A370 (Anchor Bolts: Tension (Elongation))
F1554-A370 (Anchor Bolts: Tension (Ultimate Tensile Strength of bar stock))
F1554-A370 (Anchor Bolts: Tension (Yield Strength))
F1554-F606 (Anchor Bolts: Tension (Ultimate Tensile Strength of finished bolts))
F3125-F606 (Externally Threaded Fasteners (Bolts): Proof Load Determination)
F3125-F606 (Externally Threaded Fasteners (Bolts): Ultimate Tensile Strength)

Controlled Low Strength Material - accredited since 9/16/2021
D4832, D5971

Please note that our accreditations do not include an expiration date. An accreditation only expires when the laboratory fails to comply with our accreditation requirements.

* This information is only valid as of 10/27/2026. Please visit https://aashtoresource.org for current accreditation status.