Triangle Engineering

We manufacture weld test materials, commonly called weld coupons, used for performance and procedure qualification testing.

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Train & Qualify Welders Quickly & Accurately

Our line of destructive test equipment expedites the removal and bending of weld test specimens to exact code requirements.

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Always In Stock & Ready to Ship Directly to You

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Your #1 Trusted Source For The Welding Industry

Testing Services

Providing Welding Equipment Since 1960

Our History

Our Collections

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Equipment Parts
Pipe Coupons
Plate Coupons
Procedure Plate Coupons
Test Kits & Combo Boxes

Train and Qualify Welders Quickly and Accurately

Our line of destructive test equipment expedites the removal and bending of weld test specimens to exact code requirements.

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Weld Testing & Qualification Services

In our AWS QC4 Accredited Test Facility we offer complete weld testing services as well as engineering, consulting, and procedural review.

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Pipe Coupons

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Monster 2-3/4" x 5/8" - A106B **BACKORDERED - SEE DESCRIPTION**Monster 2-3/4" x 5/8" - A106B **BACKORDERED - SEE DESCRIPTION**
Monster 2-3/4" x 5/8" - A106B **BACKORDERED - SEE DESCRIPTION**
Box of 12pcs to 100pcs
From $228.00
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2-1/2" sch XXH x4 A106B2-1/2" sch XXH x4 A106B
2-1/2" sch XXH x4 A106B
Box of 12pcs
$228.00
2" sch. 10 - 304/L2" sch. 10 - 304/L
2" sch. 10 - 304/L
Box of 20pcs
$360.00
2" sch. 40 - A106B2" sch. 40 - A106B
2" sch. 40 - A106B
Box of 20pcs
$240.00
2" sch. 40 - 304/L2" sch. 40 - 304/L
2" sch. 40 - 304/L
Box of 20pcs
$390.00
2" sch. 80 - A106B2" sch. 80 - A106B
2" sch. 80 - A106B
Box of 20pcs to 100pcs
From $240.00
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2" sch. 80 - 304/L2" sch. 80 - 304/L
2" sch. 80 - 304/L
Box of 20pcs
$450.00
2" sch. 80 - 60612" sch. 80 - 6061
2" sch. 80 - 6061
Box of 20pcs
$440.00
2" sch. 80 - SA335 P52" sch. 80 - SA335 P5
2" sch. 80 - SA335 P5
Box of 10pcs
$390.00
2" sch. 80 - SA335 P112" sch. 80 - SA335 P11
2" sch. 80 - SA335 P11
Box of 10pcs
$350.00
2" sch. 80 - SA335 P222" sch. 80 - SA335 P22
2" sch. 80 - SA335 P22
Box of 10pcs
$360.00
2" sch. 80 - SA335 P912" sch. 80 - SA335 P91
2" sch. 80 - SA335 P91
Box of 10pcs
$450.00

Plate Coupons

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1/4" x 1" A361/4" x 1" A36
1/4" x 1" A36
Box of 10pcs
$32.50
3/8" x 1" A363/8" x 1" A36
3/8" x 1" A36
Box of 10pcs
$42.50
1/4" x 1" 304 SS1/4" x 1" 304 SS
1/4" x 1" 304 SS
Box of 5 pcs
$36.25
1/4" x 1" 60611/4" x 1" 6061 (Qty. 10)
1/4" x 1" 6061
Box of 10pcs
$50.00
1/4" x 3" A361/4" x 3" A36
1/4" x 3" A36
Box of 10pcs
$52.50
3/8" with 22.5 deg. bevel A363/8" with 22.5 deg. bevel A36
3/8" with 22.5 deg. bevel A36
Box of 20pcs to 100pcs
From $200.00
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3/8" with 37.5 deg. bevel A363/8" with 37.5 deg. bevel A36
3/8" with 37.5 deg. bevel A36
Box of 20pcs to 100pcs
From $200.00
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3/8" w/ 22.5 Deg. Bevel & Backing Combo A363/8" w/ 22.5 Deg. Bevel & Backing Combo A36
3/8" w/ 22.5 Deg. Bevel & Backing Combo A36
Box of 7 kits to 50 kits
From $162.75
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3/8" w/ 37.5 Deg. Bevel & Backing Combo A363/8" w/ 37.5 Deg. Bevel & Backing Combo A36
3/8" w/ 37.5 Deg. Bevel & Backing Combo A36
Box of 7 kits to 50 kits
From $162.75
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3/8" with 22.5 deg. bevel 304 SS3/8" with 22.5 deg. bevel 304 SS
3/8" with 22.5 deg. bevel 304 SS
Box of 10pcs
$245.00
3/8" w/ 22.5 Deg. Bevel & Backing Combo 304 SS3/8" w/ 22.5 Deg. Bevel & Backing Combo 304 SS
3/8" w/ 22.5 Deg. Bevel & Backing Combo 304 SS
1 Set
$168.75
3/8" with 37.5 deg. bevel 304 SS3/8" with 37.5 deg. bevel 304 SS
3/8" with 37.5 deg. bevel 304 SS
Box of 10pcs
$245.00

Test Kits & Combo Boxes

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6GR Weld Test Kit6GR Weld Test Kit
6GR Weld Test Kit
1 Test Kit
$183.00
AWS Test Kit 3/8" 1G with backingAWS Test Kit 3/8" 1G with backing
AWS Test Kit 3/8" 1G with backing
1 Test Kit
$170.00
AWS Test Kit 3/8" 1G without backingAWS Test Kit 3/8" 1G without backing
AWS Test Kit 3/8" 1G without backing
1 Test Kit
$170.00
AWS Test Kit 3/8" 2G with backingAWS Test Kit 3/8" 2G with backing
AWS Test Kit 3/8" 2G with backing
1 Test Kit
$170.00
AWS Test Kit 3/8" 2G without backingAWS Test Kit 3/8" 2G without backing
AWS Test Kit 3/8" 2G without backing
1 Test Kit
$170.00
AWS Test Kit 3/8" 3G with backingAWS Test Kit 3/8" 3G with backing
AWS Test Kit 3/8" 3G with backing
1 Test Kit
$170.00
AWS Test Kit 3/8" 3G without backingAWS Test Kit 3/8" 3G without backing
AWS Test Kit 3/8" 3G without backing
1 Test Kit
$170.00
AWS Test Kit 3/8" 4G with backingAWS Test Kit 3/8" 4G with backing
AWS Test Kit 3/8" 4G with backing
1 Test Kit
$170.00
AWS Test Kit 3/8" 4G without backingAWS Test Kit 3/8" 4G without backing
AWS Test Kit 3/8" 4G without backing
1 Test Kit
$170.00
AWS Test Kit 3/8" 3G & 4G with backingAWS Test Kit 3/8" 3G & 4G with backing
AWS Test Kit 3/8" 3G & 4G with backing
1 Test Kit
$190.00
AWS Test Kit 3/8" 3G & 4G without backingAWS Test Kit 3/8" 3G & 4G without backing
AWS Test Kit 3/8" 3G & 4G without backing
1 Test Kit
$190.00
AWS Test Kit 1" 1G with backingAWS Test Kit 1" 1G with backing
AWS Test Kit 1" 1G with backing
1 Test Kit
$200.00

Apparel

Support the Triangle Engineering brand by wearing our branded apparel.

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TEI Navy HoodieTEI Navy Hoodie
TEI Navy Hoodie
Sizes L to XL
$40.00
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TEI Orange HoodieTEI Orange Hoodie
TEI Orange Hoodie
Sizes L to XL
$40.00
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TEI Performance PoloTEI Performance Polo
TEI Performance Polo
Sizes L to XL
$28.50
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TEI Grey Long Sleeve ShirtTEI Grey Long Sleeve Shirt
TEI Grey Long Sleeve Shirt
Sizes M to XL
$25.00
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TEI Navy T-ShirtTEI Navy T-Shirt
TEI Navy T-Shirt
Sizes L to XL
$20.00
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TEI Orange T-ShirtTEI Orange T-Shirt
TEI Orange T-Shirt
Size L to XL
$20.00
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TEI Neon T-ShirtTEI Neon T-Shirt
TEI Neon T-Shirt
Size L to XL
$15.00
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Monster Coupon t-shirtMonster Coupon t-shirt
Monster Coupon t-shirt
Size L
$15.00