Flange lap joint

Le flange lap-joint, con normativa di riferimento ASME B16. The following item has PN marking with reference to the nominal pressure. FLANGE LAP JOINT FORGIATE. STAINLESS STEEL AND CARBON STEEL.

Lap Joint flange dimensions are covered in ASME B16.

The stub-end straight adapter slides into the flange and welds to pipe (not the flange ). Sizes above 24" are produced as lap joints to slip on dimensions. Oltre che per il tipo di finiture, un altro modo per classificare le flange è il "rating", che dipende dalle dimensioni e dalla massima pressione ammissibile. Lap joint flanges are usually used in low pressure applications and are not suitable when there are high loads on the flange pair.

Some types of piping require the use of lap joint flanges. For example, metallic pipe that has been plastic lining may have lap joint flanges. Flange Long Welding Neck.

Lap joint flange (simplified as LTF flange ) shape is similar to slip on flange, it has a curved radius at the bore, which can connect with a stub end fittings and slide over the pipe.

In this form, the pipe is usually welded to this stub end so the lap joint flange can rotate freely around the stub end. Get Info From Multiple Sources. Il raggio e la flat face, entrambi consentono alla flangia di fissare contro il raccordo stub end. Lap joint flanges and stub-end assemblies are typically used in situations where frequent dismantling is required for for inspection.

O flange lap-joint, também conhecido como flange solto, é utilizado junto à inserção stub-en. Não é corroído pelo fluido, por ser fabricado em aço carbono. This curved radius allows for the placement of a pipe fitting known as a stub end. This type of flange is made to saddle over stub end fitting for rotation.

Because a lap joint flange has a two piece configuration, it offers a way to cut cost when piping systems requires a high cost alloy for all “wetted” parts to reduce corrosion. In this situation, it is only required for the stub-end to be can be made of the higher cost corrosion-resistant material, where the flange itself can be the produced from lower cost steel.

It is quite similar to slip-on flange, where it has a radius at the junction of the bore and as well the flange face which is for to put up a lap stub end. I have created project in Metric units with Nominal Dia as mm.

In my SS spec, I used Lap joint flange with StubEnd. I double checked my spec and I have already assigned Gasket (RF) and BoltSet in that spec. As per other post and recommendation of ex. Product Information.

Downloading Options.

PDF (ACROBAT READER). DXF (NEUTRAL CAD SYSTEM 2D FILE). This datasheet is for lap joint flanges that have a flat face connection. Dimensions to ASME B16.

Lap flange is having two components, a stub en and a loose backing flange. Stub end is butt-welded to the pipe and Backing flange freely moves over the pipe. The main benefit of this type of flange, is that once the pipe welds to the insert stub-en the flange then can rotate for easier alignment of the bolting holes.

However, lap joint flanges and their stub-ends’ ability to hold pressure is about the same as slip-on flanges. The lap joint flange floats on the pipe which allows allows for easy bolting. These flanges are used behind and in conjunction with a Stub End.

The main difference is at the radius located at the intersection on the face of the lap joint flange and the bore which has the ability to accommodate the flanged portion of the Stub End.