Lap Joint Flange, Lap JointFlange Stub End, Lap Joint Flange vs Slip-On, Lap Joint Flange Dimensions, Stub End For Lap Joint Flange, Lap Joint Flange Gasket, Lap Joint Flange Stub End Dimensions Class 300, Lap Joint Flange Manufacturers

Production Process

Lap joint pipe flanges slide directly over the pipe and are most commonly used with stub end fittings. A pipe is usually welded to the Stub End and the Lap Joint pipe flange is free to rotate around the stub end. Lap Joint pipe flanges are often used for applications that require frequent dismantling.

Lap joint flanges feature a flat face and are always used in conjunction with a stub end.  A stub end is inserted in the bore of the flange and welded with the pipe.

Lap joint flanges resemble, in shape, slip-on flanges except for the radius at the crossing of the flange face and the bore to accommodate the flanged portion of the stub end.

A lap joint flange slips over the pipe and seats on the back of the stub end and the two are kept together by the pressure of the bolts.

The use of lap joint flanges in combination with stub ends is a cost-effective solution for stainless steel or nickel alloy pipelines, as the material of the lap joint flange can be of a lower grade (generally carbon steel) than the material of the stub end (which has to match the pipe grade, as in contact with the conveyed fluid).

This arrangement, therefore, has these two advantages:

reduces the overall cost of the pipeline’s flanged joints, as the use of higher-grade materials is minimized;

bolting operations are simplified, as the lap joint flange can be rotated around the pipe to help with bolts alignment.

 

Cooperate with JS FITTINGS, you will enjoy the following benefits.

Pre-sale Service

Cooperation guidance Production process updates Documents of clearance

After-sale Service

1-year warranty time of the products. Any feedback will be replied to within 2 hours. 
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Free Sample

If you need samples in small sizes such as 1", 2", and only one or two pieces, samples are free.

Free Sample

You only need to pay for the courier cost. 
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Fast Quotation

The factory price list can be supplied within 1 day in working days. 

Factory Price

We are a factory of 38 years old, some items are in stock.
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Cerfifications

Our factory and products are approved by ISO 9001, CE, TUV, CCS and GOST-R.

Test & Inspection

Before delivery, the SGS inspection, Ultrasonic test and other inspections are acceptable. 
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Customers say:

Boran
Boran Turkey
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The flanges are exactly in line with our requirement technically and competitive commercially.
Faris
FarisOman
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We tested the elbows and flanges, their performance is very nice. We will make the new purchase plan for the warehouse.
Hung
HungVietnam
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like the product.. quick response and also nice people.
Anton
AntonRussia
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This product is exactly in line with our requirement technically and competitive commercially.
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