Casing split pipe

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


Split pipe casing WA-HEX-SC Bolt Closed.

Split casings Hexagonal form, provide high compression strength protection for existing pipelines. WA-HEX encasement split sections are manufactured forms - not split pipe. Encasement for all American and International pipe sizes.

If required gaskets between flange connections add an extra bolt closing feature.


Non-metallic or metallic casing spacers (positioners) hold the carrier pipe suspended in the casing and provide isolation between the pipe and casing.

Reinforcement flanges add extra strength to the Hexagonal encasement sleeves.

Hexagonal split casing materials available:

Galvanized - Corrosion protected coating - Carbon Steel - 304L/316L Stainless - Split Casings.

Encasement protection for pipes, conduit, power cables and fiber-optic lines

Pipelines remain in service during the encasement process.


Split casing bolt closed Hex model

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

SEE: Split Casing round cylindrical form:

Split casing for welded closing of the 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 casing for large pipe sectional bolted closings WA-HEX-SCBC - Sectional

Bolt closed multi sectional split casing for large pipe protection.


Split casing for existing larger pipelines; may have three or more separate sections.

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

Split casings Hex models fit all American and International pipe sizes.


Large pipe Hex split casing come with casing spacers steel or non-metallic - that hold the carrier pipe suspended in the split casing.

See non-metallic casing spacers

Split casing for large diameter carrier pipes

Hex-split casing may be installed by 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.

- 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.



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.

Contact us for a quote on your project


Download Cut Sheet

Sample Sketch

Split Casing - Cylindrical - Bolt closing split casing

Cylindrical split casing - existing pipes

Pipeline remains in service during install

WA.CYL-BCSC split pipe casing.




Split casing for existing pipeline protection.





Bolted closing split casings encapsulate existing carrier pipelines.

Westatlantic split casings are formed sections - not split pipes.

Split casings protect power cables and fiber optic lines in under ground or under sea placement applications.

Two half sections wrap around the pipe and bolt together to form total encasement.

EDPM or NBR gaskets may be provided between the axial and butt end flanges.

Casing spaces (POSITIONERS) hold the carrier pipes off the bottom of the casing. End seals are supplied with the assembly if required.

Exterior rib flanges add strength and stability to longer section lengths. Special casing end connectors or flange ends may form part of the assembly depending on requirements.

Guide to Installing split casings.

-Expose existing pipe by excavating down to the pipe on both sides.

-The pipe under bedding should be left undisturbed until ready to install a casing spacer around the pipe.
-Remove a portion of the under bedding to to provide space to wrap around the casing spacers and tighten to the pipe.

-Place a bottom half split casing section under the casing spacers and around the pipe.
-Place several split casing bottom half sections in this manner and bolt the end flanges together, note the gaskets should be placed between the butt joints and axial joints.

-Temporary support for the existing pipeline may be accomplished with sand bags if required. Earth support along the existing pipe 10ft. long  max. Check with the engineer if longer exposed sections are required, as mentioned use sand bags of additional support is required.

-Place the top split section over the bottom half and bolt the sections together.
-Under the bottom split casing add concrete grout to fill any gap in the original bedding to the underside of the split casing. The concrete support may extend to about half way up the bottom half split.

-Note** the idea here is the grout bedding will now support the split casing and the casing spacers support the original carrier pipe inside the split casing.

-Place the bottom lengths first before placement of the top sections.

-Field conditions may require a different placement sequence due to conditions that may exist.

-Exposed carrier pipe should always be supported.

-Non-excavated bedding must support the pipe, sand bag support may be temporarily used.

-Place split casing lengths under the exposed carrier pipe with support before moving to expose another section.-Do not remove the bedding from around the original carrier pipe for more that 10 ft unless supported.

Split casing pipe protection round casing



Split Casing existing pipeline - Weld closing - Cylindrical



Split casing existing pipelines welded closing.

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 provide weld reception slots for weld closing the units around existing carriers. Two or three reinforcement rings are welded to each half section as part of delivery.

Welding protection skirts should be used where required.

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.

Steel sections are not corrosion protected, a coating as per customer requirements may be applied in the field after weld closure procedures are complete.

Total run length is obtained by welding end to end in the field. Grip hooks may be attached to assist lifting. Normally strap lifting is the only requirement for lifting the half moon sections into position for welding.

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 the exposed pipe length before moving on. Field contractors may modify method of exposing existing carrier pipes to meet required conditions.

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



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.


The plain of the carrier pipe through the casing determines the center seal opening.

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 to seal - off center carrier pipes.

Download cut sheet

WA-Oval end seals for out of round carrier pipes.



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

WA-GP-OVAL end seals are custom built to form a watertight seal.

Materials are 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.






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, pipe, 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, Prince Albert, Manitoba MB; Winnipeg, QC; Montreal, New Brunswick, NB, Nova Scotia, Newfoundland, NL.