Size Selection
1/2" - 4"1/2" to 4" NPS (DN 15 - DN 100)
6" - 12"6" to 12" NPS (DN 150 - DN 300)
14" - 36"14" to 36" NPS (DN 350 - DN 900)
Product page
SKYLAND
ASME B16.5 Lap Joint Flanges (Lapped Flanges)
Skyland Lap Joint Flanges (Loose Flanges) are designed to slide freely over the pipe and seat against the back of a Lap Joint Stub End. Because the flange is not welded directly to the pipe, it can rotate 360 degrees, making bolt hole alignment exceptionally quick and eliminating bolt hole stress.
Manufactured to ASME / ANSI B16.5, DIN 2642 / EN 1092-1 Type 02 standards
Pressure Classes: Class 150, 300, 600, 900, 1500, and 2500 LBS
Sizes: 1/2" to 36" NB (DN 15 to DN 900)
Machined internal curved radius at the bore-to-face junction to accommodate stub end flare
Ready for quotationShare your range, connection and case requirement.
Talk to ATHStandardASME / ANSI B16.5, DIN 2642, EN 1092-1 Type 02
Pressure ClassClass 150#, 300#, 600#, 900#, 1500#
Sizes1/2" to 36" (DN 15 to DN 900)
MaterialsASTM A105N, A350 LF2, A182 F304L/F316L, Duplex F51
CertificationsEN 10204 3.1, PED 2014/68/EU, ISO 9001:2015
Technical Selection
ASME B16.5 Lap Joint Flange Data
Select nominal size, class rating, and material.
StandardASME B16.5
FunctionRotating Loose Backing
Classes150# to 2500#
Sizes1/2" to 36"
Part Number Example
SKL-LJ-040-150-A105N
SKLBrandSkyland Metal & Alloys
LJTypeLap Joint Flange
040Size4" NPS (DN 100)
150ClassClass 150 Backing
A105NMaterialASTM A105N Carbon Steel
Technical specifications
Design StandardASME B16.5 / DIN 2642
Operational Notes
Inside bore radius must be properly matched to stub end radius to avoid binding.
Product Overview
Lap Joint flanges are non-wetted backing rings that provide clamping force onto the gasketed stub end face.