Casing split pipe

Split Casings - Existing Pipe Protection
Encasement - Existing Pipes - Conduit - Fiber Cables - Power Cables

Hex-Model or Cylindrical Model

Pipeline protection for existing pipes under new railway extensions, roadway enlargement and other projects requiring encasement of existing pipes.

WA - split casing bolt closed cylindrical






WA - split casing bolt closed Hexagonal


Hexagonal split casings and cylindrical split casings provide encasement protection for existing pipelines.

WA split casings are are manufactured protection casing - not split pipe.

Encasement protection for all American and International pipe sizes.

Non-metallic or metallic casing spacers (positioners) are supplied with the split casing. Casing spacers hold the carrier pipe off the bottom of the split casing, creating an annular space around the carrier pipe.

Reinforcement and end bolting flanges add extra strength to the encasement lengths.

Materials: Galvanized - Corrosion protected steel - Stainless 304L/316L.

EDPM gaskets between axial bolting flange and end connection joints are standard.

Encasement protection for pipes, conduit, power cables and fiber-optic lines. Pipelines remain in service during the install process.


Split casing bolt closed Hex model

Email or call Westatlantic 1-902 455-4455

SEE: Casing spacers Non-Metallic for bolted split casings.

SEE: Split Casing round cylindrical form:

Split casing weld closing encasement.

WA-HEX SC Weld closing with integrated pipe saddles, provide high strength protection for existing pipelines. Axial and butt socket joints are welded closed on site.



Split Casings for large carrier pipes may be built in sectional diameters WA-HEX-SCBC - Sectional


Split casing for existing larger pipelines; may have three or more section diameters PCS.

Bolt joining end flanges bolt end to end for all run lengths. Installation is accomplished with the pipeline in service, shutdown is not required.

Split casings models fit all American and International pipe sizes.

Large pipe Hex split casing or cylindrical split casings come with casing spacers steel or non-metallic.

See non-metallic casing spacers

Split casing for large diameter carrier pipes

Email or call Westatlantic 1-902 455-4455

Split casing may be installed by waterworks contractors, specialized equipment is not required.

Split Casing Applications:

- Tank farm protection for existing gas and oil pipes through earth containment berms or bund walls.

- Protection for existing pipelines under rail tracks, roads and other crossover projects.

- Waterline sewer-line cross overs.

- Extra protect for existing pipelines under new building foot prints.

- Protect communication cables and power supply cables.

- Provide utility corridors for service entries.

Rib former collars on the split casing provide stability, and strength. Split Casing ends may be closed or open.

Sizing: from 5 inch - 48 inch standard (125mm to 1200mm) larger split casing available on request.

Split casing Material: galvanized steel, corrosion coated steel, 304L or 316L stainless steel.

Flange Gaskets: EDPM for water applications or NBR elastomer for oil and gas applications.

Casing Spacer "positioners" support the pipe in the casing.

WA-Hex (Hexagonal split casing) ships ready to install with all necessary material.



When installing only expose an existing carrier pipe so that non-excavated earth supports the pipe. Place split casing lengths under that section before moving on.

Basic structures may be modified to accommodate existing field conditions.

Email or call Westatlantic1-902 455-4455


Download Cut Sheet

Sample Sketch

Split Casing Cylindrical - Bolt closing - Existing pipes remains in service during install

WA.CYL-BCSC split pipe casing.



Split casing - pipeline protection.






Bolt closed split casings encapsulate and protect existing carrier pipelines. Westatlantic split casings are formed sections - not split pipes.

Split casings protect pipes, power cables and fiber optic lines. Half sections wrap around the pipe and bolt together to form total encasement.

If requested, gaskets may be supplied to fit between the axial and butt end flanges. Casing spaces (POSITIONERS) hold the carrier pipes off the bottom of the casing. End seals are supplied if required.

End joining flanges add strength and stability to the sections. A mid point stabilization flange may be used for certain split casing wall thickness.


Guide to Installing split casings.

- Expose existing carrier pipe by excavating down to the pipe bedding on both sides.
- The pipe support bedding should be left undisturbed until ready to install a casing spacer around the pipe.
- Remove a portion of support bedding to provide an opening for the (2) casing spacers along the pipe length.
- Place a bottom half split casing section under the casing spacers and around the pipe.
- Several bottom half sections may be placed and bolted together.
- For temporary support of the split casing, sand bags or grout may be used.
- Check with the engineer on required supports for exposed existing pipe.
- Place the top split section over the bottom half and bolt the sections together.
- Grout fill any gap in the original bedding to the underside of the split casing.
- Concrete support may extend to about half way up the bottom half split.

- Note** the idea here is the new grout bedding will support the split casing, casing spacers support the carrier pipe.

- Place the bottom lengths first before top sections.
- Field conditions may require a different placement sequence.
- Exposed carrier pipe should always be supported by undisturbed bedding or other means.

Email or call Westatlantic 1-902 455-4455

Split casing pipe protection round casing



Split Casing for existing pipeline - Weld closing - Round encasement



Weld closing split casing for existing pipelines.

Standard lengths 6ft. - 8ft, shorter lengths are available.

Larger diameter pipe encasement may be less than 6ft., Large pipe protection may require more than one section piece for total diameter surround.

Bevel edges axial joints.


Steel casing spacers with steel rollers hold the carrier pipe off the bottom of the split casing.

Existing pipelines remain in service during placement of the split casing.

Placement of Split casings

Weld the bottom lengths in place first for several lengths, followed by the top sections. Field conditions may require a different sequence and is a contractor choice.

Normally only expose an existing carrier pipe length so that non-excavated earth supports the pipe. Place split casing lengths under that section length before moving on. Field contractors may modify method of exposing existing carrier pipes to meet other requirements.





See Non-Metallic casing spacers for bolted split casings.

Split Casing Applications:

Gas Line Industry, Telecommunication Industry, Reusable Cement Forms, Column Covers, Airport Runways, Bridge Construction, Road Construction, Railroad Construction.

Split casing pipe protection round casing

Email or call Westatlantic 1-902 455-4455


End Sealing-Split Casing

Casing End Seals - Casing pipe not centered


WA-GP-UM eccentric seals:

Do not require the carrier pipe to be centered in the casing. Split models of WA-GP-UM eccentric end seals are available for existing pipes.

Carrier pipes below or above the center position may be sealed. Large annular spaces may be sealed by installing WA-GP- UM seals.


Eccentric pipe seals conform to the carrier pipes exist position. The opening in the GP-UM depends on the height of the casing spacer leg being used.

E.G. a pipe would be considered to be fully (100%) eccentric it were lying against the inside diameter of the wall sleeve or core hole. A pipe would be said to be concentric (0% eccentric) if it were perfectly centered in the outer pipe or hole.

WA.GP-UM eccentric disk-seals are used for non-centered pipe through the casing..

Download cut sheet

Email or call Westatlantic 1-902 455-4455

Oval casing pipe end seals - watertight



Carrier pipes or casings not round may be sealed with a WA-GP-OVAL end seal.

Out of round end seals are custom fabricated to fit the out of round pipe or casing condition.

Materials: EDPM or NBR elastomer with stainless steel compression plates and hardware.



Measures required for out of round pipe or casing pipe:



Download a measure fill-in sheet:

- Record measures from the carrier pipe OD to the casing Pipe ID - for each point in a 24 hour clock.

- Measures should be perpendicular to the carries pipe.

- Run a straight line from the 6 o'clock to 12 o'clock.


Email or call Westatlantic 1-902 455-4455




For boot protection end-seals see web page:

End seal boots are also available for debris protection and sealing for non-pressing water.




Tel 1-902 455 4455







split casing, steel casing, bolt closing, weld closing, existing pipes, split ducts, half sole, Cooper E80, loading, gas mains, oil pipelines, water mains, sewer lines, pipe lining, railway, roadway, enclosure, USA: Illinois, IL, North Dakota, ND, Iowa, IA, Arizona, Ohio, OH, New York, NY, Kentucky, KC, Texas, TX, California, CA, Louisiana, LA, Florida, FL. availability; Canada: Alberta, AB; Edmonton, Calgary. Ontario, ON; Toronto, Quebec, British Colombia, BC; Vancouver, Saskatchewan, SK; Saskatoon, Manitoba MB; Winnipeg, QC; Montreal, New Brunswick, NB, Nova Scotia, Newfoundland, NL.