Welded vs. Mechanical Joints for Rubber-Lined Pipe

Welded joints have always been the standard connection method for unlined pipe due to their strength and ease of construction. Now with Joint Lock Ring™ technology, welded joints are available for rubber and polyurethane lined pipe as well.

See how it works

Advantage #2 - Field Length Adjustments are a Breeze with Welded Joints

Field length adjustments for lined pipe with mechanical joints can add days or weeks to a project schedule. Bends and critical junctures often require waiting for a pipe fitting fabricated to a specific length and lined at a shop. Joint Lock Rings™ can easily be installed on field fit-up ends and are ready to weld within hours. Also, long radius field bends can be accomplished just like unlined pipe.

Flanged Joints

Mechanical joints significantly complicate the construction process.

Welded Joints

Modifications are easy with welded joints, and the number of pipe supports can be reduced.

Mechanical Joints $$$

One to two weeks

  1. Measure cut to fit length
  2. Fabricate precise spool at shop
  3. Add mechanical joints to spool
  4. Rubber line spool at shop
  5. Autoclave cure rubber lining
  6. Ship spool to job site
  7. Bolt spool at tie-in location

Welded Joints $

One Shift

  1. Measure cut-to-fit length
  2. Cut pipe
  3. Remove rubber from cut pipe end
  4. Insert Joint Lock Ring™
  5. Weld spool at tie-in location

Learn more today and save your company money down the line.

How Joint Lock Works

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Benefits of Joint Lock

  1. Zero Leakage
  2. Field Length Adjustments
  3. Ideal for Higher Pressure
  4. Lower Cost than Flanged
  5. No Bolt Tightening, No Damage