Lap Joint

Lap Joint Flanges slide directly over a pipe and are used with Stub Ends. Typically, a pipe is welded to the Stub End leaving the Lap Joint Flange to rotate freely around the stub end, simplifying bolt hole alignment. Two lap joint flanges
  • Lap Joint Flanges are forged steel and conform to ASTM A105.
  • Stocked in sizes from 1.50" to 20".
  • Forged Steel Lap Joint Flanges are available in both domestic and less expensive Imported versions.
  • Stub Ends are sold separately.
click here for bolting specifications Temperature/Pressure cross reference by Class
Lap Joint Flanges
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Originally the numbers for "Class" (150, 300, 600, etc.) was the pressure (psig) at the corresponding saturated steam temperature. Ratings today are different because of changes made in materials and flange design.  Link to chart of temperature/pressure by class is above.
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Flat Face Flanges have a gasket surface in the same plane as the face of the bolting circle.  For Raised Face Flanges, the gasket surface is raised slightly above the face of the bolting circle, concentrating more pressure on a smaller gasket area.
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Flanges are avaiable in aluminum, carbon steel and stainless steel in grades 304, 304L, 316 and 316L. The L designates "low carbon", making the fitting good for welding.
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Domestic = Made in the USA Import = Made anywhere else

Flanges » Lap Joint
  • Product Name: 1.50 150# LAP JOINT FLANGE*
  • SKU: 105253
  • Weight: 3.00
  • Class: 150#
  • Face: flat
  • Material: carbon steel
  • Origin: domestic
  • Size: 1.50

Description:
Weldbend Part# 151-012-000 or equivalent A105 FORGED STEEL-DOMESTIC

FOR 1-1/2"(1.90 OD PIPE) 4 BOLT 5" OD FLANGE, ANSI B16.5

Price by Quantity:
1 - 9 = $24.16
10 - 24 = $21.14
25 - 49 = $18.72
50 + = $16.91
Quantity:
+
We show 25 in stock
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All items ship from Houston, TX.

Flanges » Lap Joint
  • Product Name: 10.0 150# LAP JOINT FLANGE
  • SKU: 106110
  • Weight: 42.00
  • Class: 150#
  • Face: flat
  • Material: carbon steel
  • Origin: import
  • Size: 10.00

Description:
A105 FORGED STEEL-IMPORT

Price by Quantity:
1 - 9 = $101.96
10 - 24 = $89.22
25 - 49 = $79.02
50 + = $71.37
Quantity:
+
We show 9 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Flanges » Lap Joint
  • Product Name: 12.0 150# LAP JOINT FLANGE
  • SKU: 105832
  • Weight: 64.00
  • Class: 150#
  • Face: flat
  • Material: carbon steel
  • Origin: import
  • Size: 12.00

Description:
A105 FORGED STEEL-IMPORT

Price by Quantity:
1 - 9 = $160.00
10 - 24 = $140.00
25 - 49 = $124.00
50 + = $112.00
Quantity:
+
We show 7 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Flanges » Lap Joint
  • Product Name: 14.0 150# LAP JOINT FLANGE
  • SKU: 118405
  • Weight: 85.00
  • Class: 150#
  • Face: flat
  • Material: carbon steel
  • Origin: import
  • Size: 14.00

Description:
A105 FORGED STEEL-IMPORT

Price by Quantity:
1 - 4 = $365.36
5 - 9 = $319.69
10 - 19 = $283.15
20 + = $255.75
Quantity:
+
We show 7 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Note:  This item is shipped via freight.

Flanges » Lap Joint
  • Product Name: 2.00 150# LAP JOINT FLANGE
  • SKU: 123098
  • Weight: 5.00
  • Class: 150#
  • Face: flat
  • Material: carbon steel
  • Origin: import
  • Size: 2.00

Description:
A105 FORGED STEEL-IMPORT

Price by Quantity:
1 - 9 = $17.72
10 - 24 = $15.51
25 - 49 = $13.73
50 + = $12.40
Quantity:
+
We show 46 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Flanges » Lap Joint
  • Product Name: 2.00 150# LAP JOINT FLANGE*
  • SKU: 104875
  • Weight: 5.00
  • Class: 150#
  • Face: flat
  • Material: carbon steel
  • Origin: domestic
  • Size: 2.00

Description:
Weldbend Part# 151-020-000 or equivalent A105 FORGED STEEL-DOMESTIC

FOR 2"(2.375 OD PIPE) 4 BOLT 6" OD FLANGE, ANSI B16.5

Price by Quantity:
1 - 9 = $22.58
10 - 24 = $19.76
25 - 49 = $17.50
50 + = $15.81
Quantity:
+
We show 29 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Flanges » Lap Joint
  • Product Name: 2.50 150# LAP JOINT FLANGE*
  • SKU: 104434
  • Weight: 7.00
  • Class: 150#
  • Face: flat
  • Material: carbon steel
  • Origin: domestic
  • Size: 2.50

Description:
Weldbend Part# 151-022-000 or equivalent A105 FORGED STEEL-DOMESTIC

FOR 2-1/2"(2.875 OD PIPE) 4 BOLT 7" OD FLANGE, ANSI B16.5

Price by Quantity:
1 - 9 = $35.66
10 - 24 = $31.20
25 - 49 = $27.64
50 + = $24.96
Quantity:
+
We show 11 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Flanges » Lap Joint
  • Product Name: 20.0 150# LAP JOINT FLANGE
  • SKU: 142570
  • Weight: 195.00
  • Class: 150#
  • Face: flat
  • Material: carbon steel
  • Origin: import
  • Size: 20.00

Description:
A105 FORGED STEEL-IMPORT

Price by Quantity:
1 - 9 = $468.00
10 - 24 = $409.50
25 - 49 = $386.10
50 + = $372.01
Quantity:
+
We show 2 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Note:  This item is shipped via freight.

Flanges » Lap Joint
  • Product Name: 3.00 150# LAP JOINT FLANGE
  • SKU: 125249
  • Weight: 8.00
  • Class: 150#
  • Face: flat
  • Material: carbon steel
  • Origin: import
  • Size: 3.00

Description:
A105 FORGED STEEL-IMPORT

Price by Quantity:
1 - 9 = $28.86
10 - 24 = $25.25
25 - 49 = $22.37
50 + = $20.20
Quantity:
+
We show 41 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Flanges » Lap Joint
  • Product Name: 3.00 150# LAP JOINT FLANGE*
  • SKU: 106084
  • Weight: 8.00
  • Class: 150#
  • Face: flat
  • Material: carbon steel
  • Origin: domestic
  • Size: 3.00

Description:
Weldbend Part# 151-030-000 or equivalent A105 FORGED STEEL-DOMESTIC

FOR 3"(3.50 OD PIPE) 4 BOLT 7-1/2" OD FLANGE, ANSI B16.5

Price by Quantity:
1 - 9 = $36.14
10 - 24 = $31.62
25 - 49 = $28.01
50 + = $25.30
Quantity:
+
We show 37 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Flanges » Lap Joint
  • Product Name: 4.00 150# LAP JOINT FLANGE
  • SKU: 123067
  • Weight: 13.00
  • Class: 150#
  • Face: flat
  • Material: carbon steel
  • Origin: import
  • Size: 4.00

Description:
A105 FORGED STEEL-IMPORT

Price by Quantity:
1 - 9 = $35.00
10 - 24 = $30.63
25 - 49 = $27.13
50 + = $24.50
Quantity:
+
We show 42 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Flanges » Lap Joint
  • Product Name: 6.00 150# LAP JOINT FLANGE
  • SKU: 113405
  • Weight: 19.00
  • Class: 150#
  • Face: flat
  • Material: carbon steel
  • Origin: import
  • Size: 6.00

Description:
A105 FORGED STEEL-IMPORT

FOR 6"(6.625 OD PIPE) 8 BOLT 11" OD FLANGE, ANSI B16.5

Price by Quantity:
1 - 9 = $60.00
10 - 24 = $52.50
25 - 49 = $46.50
50 + = $42.00
Quantity:
+
We show 27 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Flanges » Lap Joint
  • Product Name: 6.00 150# LAP JOINT FLANGE*
  • SKU: 104876
  • Weight: 19.00
  • Class: 150#
  • Face: flat
  • Material: carbon steel
  • Origin: domestic
  • Size: 6.00

Description:
Weldbend Part# 151-060-000 or equivalent A105 FORGED STEEL-DOMESTIC

FOR 6"(6.625 OD PIPE) 8 BOLT 11" OD FLANGE, ANSI B16.5

Price by Quantity:
1 - 9 = $62.74
10 - 24 = $54.90
25 - 49 = $48.62
50 + = $43.92
Quantity:
+
We show 26 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Flanges » Lap Joint
  • Product Name: 8.00 150# LAP JOINT FLANGE
  • SKU: 106667
  • Weight: 30.00
  • Class: 150#
  • Face: flat
  • Material: carbon steel
  • Origin: import
  • Size: 8.00

Description:
A105 FORGED STEEL-IMPORT

FOR 8"(8.625 OD PIPE) 8 BOLT 13-1/2" OD FLANGE, ANSI B16.5

Price by Quantity:
1 - 9 = $71.38
10 - 24 = $62.46
25 - 49 = $55.32
50 + = $49.97
Quantity:
+
We show 13 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Flanges » Lap Joint
  • Product Name: 8.00 150# LAP JOINT FLANGE*
  • SKU: 110237
  • Weight: 30.00
  • Class: 150#
  • Face: flat
  • Material: carbon steel
  • Origin: domestic
  • Size: 8.00

Description:
Weldbend Part# 151-080-000 or equivalent A105 FORGED STEEL-DOMESTIC

FOR 8"(8.625 OD PIPE) 8 BOLT 13-1/2" OD FLANGE, ANSI B16.5

Price by Quantity:
1 - 9 = $100.88
10 - 24 = $88.27
25 - 49 = $78.18
50 + = $70.62
Quantity:
+
We show 13 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.