Riser – Flange x Flange

Riser is a pipe through which liquid travels upward.

Riser pipe is the pipe and special fittings used on floating offshore drilling rigs to establish a seal between the top of the wellbore, which is on the ocean floor, and the drilling equipment, located above the surface of the water. A riser pipe serves as a guide for the drill stem from the drilling vessel to the wellhead and as a conductor of drilling fluid from the well to the vessel. The riser consists of several sections of pipe and includes special devices to compensate for any movement of the drilling rig caused by waves. It is also called a marine riser.


SizeWorking Pressure
4-1/16"3M, 5M, 10M, & 15M
5-1/8"5M & 10M
7-1/16"3M, 5M, 10M, & 15M
11"3M, 5M, 10M, & 15M
13-5/8"3M, 5M, 10M, & 15M
20-3/4"2M & 3M
21-1/4"2M, 3M, 5M & 10M
30"2M & 3M

*Rentals quoted in 3ft – 5ft, 6ft – 10ft or 15ft sections.

Related Products

Ram Type BOP

A ram-type BOP is similar in operation to a gate valve, but uses a pair of opposing steel plungers, rams. The rams extend toward the center of the wellbore to restrict flow or retract open in order to permit flow.

Annular Type BOP

An annular blowout preventer uses the principle of a wedge to shut in the wellbore. It has a donut-like rubber seal, known as an elastomeric packing unit, reinforced with steel ribs.

Ram Blocks

The closing and sealing component on a blowout preventer. One of three types – blind, pipe, or shear – may be installed in several preventers mounted in a stack on top of the wellbore.

API 20E Bolting

The providing API 20E Bolting, Cansco guarantees that the products are manufactured and tested under the most extreme conditions. Cansco is able to provide (BSL) Bolting Specification Levels in the three-existing levels, which prove our commitment with technology and engineering excellence.

Diverter Packages

A system used to control well blowouts encountered at relatively shallow depths and to protect floating rigs during blowouts by directing the flow away from the rig.

Manifolds – Choke & Kill/Testing

An accessory system of piping to a main piping system (or another conductor) that serves to divide a flow into several parts, to combine several flows into one, or to reroute a flow to any one of several possible designations.

BOP Control Units

A device that stores hydraulic fluid under pressure in special containers and provides a method to open and close the blowout preventers quickly and reliably. Usually, compressed air and hydraulic pressure provide the opening and closing force in the unit.

Chokes – Hydraulic, Manual & Fixed

Provide flow restriction in high pressure applications such as choke manifolds, flow through manifolds and test manifolds.

Drilling Valves – Gate, Ball, Plug & Check

Generally used to completely shut off fluid flow or, in the fully open position, provide full flow in a pipeline. Closing the valve is accomplished by spring force within the valve operator and by some means of assist from line pressure.

Adaptors – BOP & Well Head

Provides the suspension point and pressure seals for the casing strings that run from the bottom of the hole sections to the surface pressure control equipment.

Drilling and Diverter Spools

Drilling spools allow the smooth circulation of mud during drilling operations and usually have the same nominal top and bottom end connections. Side outlet may differ from each other. Top, bottom and side end connections can be hub end or flanged.

Riser – Flange x Flange

Pipe and special fittings used on floating offshore drilling rigs to establish a seal between the top of the wellbore, which is on the ocean floor, and the drilling equipment, located above the surface of the water.

Choke and Kill Hoses

For drilling and service both onshore and offshore in applications as choke and kill lines. Choke and kill hoses are essential to control the well control equipment.

Chiksan / Treating Iron

These rugged fittings come in 3/8- to 12-inch sizes and can handle cold working pressures up to 20,000 psi. Chiksan swivel joints are available for sour gas services at cold working pressures up to 15,000 psi.

BOP Test Pump & Bolt Torque Unit

Cansco BOP test systems and pumps are designed and packaged in a variety of formats to suit the specific location, operating, and application requirements.

BOP Test Stump

BOP Test Stumps are used at off-shore and on-shore drilling rig to test Annular Type of BOP for locking mechanism test and sealing mechanism test.

Test / Blind Flanges

A projecting rim or edge (as on pipe fittings and openings in pumps and vessels), usually drilled with holes to allow bolting to other flanged fittings.