LAPPED JOINT FLANGE

Emcor stuff (86)

LAPPED JOINT FLANGE

Emcor Engineering offers a range of lap joint pipe flanges in various materials and sizes to suit client needs. These flanges feature a two-piece design, requiring butt welding of the stub end to the pipe using a backing flange. This design is ideal for space-constrained systems and those requiring frequent maintenance. Materials include Carbon Steel, Alloy Steel, Stainless Steel, Hastelloy, Inconel, Monel, and duplex Steel. Lap Joint Flanges share common dimensions with other flanges but lack a raised face. They closely resemble Slip On flanges with a bore intersection radius for the Stub End. However, their pressure-holding capability is similar to Slip On flanges, and the assembly’s fatigue life is one-tenth that of Welding Neck flanges.

The lap joint is a versatile flanged joint used in various industries. It employs a separate flange for bolting and axial load application. Lap joint connections are ideal for exotic or costly piping materials, allowing for economical use of a carbon steel flange with only the lap joint stub end in the line material. This type of flange finds extensive applications in chemical, oil & gas, paper & pulp, power generation, food processing, structural piping, and various process industries.

CARBON STEEL SPECIFICATION:           

  • Size : 1/2″ NB to 80″ NB
  • Dimensions: ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
  • Class : 150# , 300#, 400#, 600#, 900#, 1500#, 2500#
  • Schedule : 10/20/40/80/100/120/160/XXS
  • Carbon Steel : ASTM A 105
  • Carbon Steel : DIN Standard – EN 10222-2/ EN 10222-4 – P235GH / P245GH / P265GH / P280GH / P295GH / P355N / P355NH / P285NH / P285QH
  • Other Services: Hot Dip Galvanizing, Sand Blasting, Special Threading.

ALLOY STEEL & LTCS SPECIFICATION:

  • Size : 1/2″ NB to 80″ NB
  • Dimensions: ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
  • Class : 150# , 300#, 400#, 600#, 900#, 1500#, 2500#
  • Schedule : 10/20/40/80/100/120/160/XXS
  • Alloy Steel : ASTM A 182-F5, F9, F11, F21, F22 & F91
  • Low Temp.CS : A 350 LF2
  • Other Services : Hot Dip Galvanizing, Sand Blasting, Special Threading.

STAINLESS STEEL & DUPLEX STEEL SPECIFICATION:

  • Size : 1/2″ NB to 64″ NB
  • Dimensions: ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
  • Class : 150# , 300#, 400#, 600#, 900#, 1500#, 2500#
  • Schedule : 10/20/40/80/100/120/160/XXS
  • Stainless Steel : ASTM A 182 F -304/304H/304L/316/316H/316L/316Ti/309/310/317L/321/347/904L,XM19
  • Stainless Steel : DIN Standard EN 10222-5 1.4301/1.4307/1.4401/1.4404/1.4529/1.4571/1.4541/1.4410/1.4550/1.4335/1.4539
  • Duplex Steel : ASTM A 182 F -51, F 53, F 55

NICKEL ALLOYS SPECIFICATION:

  • Size : 1/2″ NB to 48″ NB
  • Dimensions: ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
  • Class : 150# , 300#, 400#, 600#, 900#, 1500#, 2500#
  • Schedule : 10/20/40/80/100/120/160/XXS
  • Copper Nickel : C70600(90:10), C71500(70:30), C71640
  • Nickel : UNS N02200, N02201
  • Monel : UNS N04400, N05500, Alloy 20
  • Inconel : UNS N06600, N06601, N06625, N08800, N08810, N08825,
  • Hastelloy : UNS N10276, N06022, N10665, N06455,
  • SMO 254 Grade UNS S31254
  • Aluminium : ASTM B247, B361 – 2024, 6061, 6063, 6101, 7075.
  • Titanium : ASTM B381 – Grade 1, Grade 2, Grade 4, Grade 5, Grade 6, Grade 7, Grade 9, Grade 19, Grade 23

Test Certificate:

  •  Manufacturer test Certificate En 10204, 3.1 & 3.2
  •  IBR Test Certificate Form IIIC
  • TPI Inspection Release Note (as per customer requirement)
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