API 16C Conflex Hose Flexible Choke and Kill Line Hose

FLEXIBLE CHOKE AND Kill Line Hose

RIGRS supplies API 16C flexible choke and kill hose assemblies for high-pressure well-control systems. These hoses are typically used as flexible connections between the BOP stack and choke or kill manifold where rigid piping is impractical or where movement must be accommodated.
Hose assemblies can be supplied according to required inside diameter, working pressure, overall length, end connection, temperature range and sour-service requirement.
For replacement projects, buyers may send the existing hose nameplate, overall photos and both end-connection photos for preliminary specification identification.

API 16C Choke & Kill Line are widely using in well control systems in drilling operations and are one of the core components to ensure the safety of underground operations.

Applicable to connection at locations when drill platform, semi-submersible drilling vessel, or drilling vessel moves relatively and the installation dimensions of the drill rig subsequently change, and to delivery of oil, and gas. mud and other high-pressure media (including mainly the relief line, blowout control line, and choke kill line).

The product features resistance to high pressure, thermal insulation, anti-flaming, and fire resistance as well as an inner wall with high abrasion resistance.

For a quick quote, send size, working pressure, length, end fittings, service medium (H2S or not), quantity and destination port.

Where Is an API 16C Choke & Kill Hose Used?

1. BOP Stack to Choke Manifold

Flexible choke line hose connects the choke outlet on the BOP stack to the choke manifold where movement, alignment or vibration makes rigid piping less practical.

2. BOP Stack to Kill Manifold

Kill line hose provides a high-pressure flow path used during well-control operations and must match the pressure class and connection configuration of the existing system.

3. Replacement and Rig Upgrade

Replacement hoses are often ordered during rig refurbishment, pressure-control system upgrades or planned maintenance.

Product Advantages of RIGRS Kill Line Hose

API 16C choke and kill hoses are using in well control systems where reliable pressure containment and flexible routing are requiring.

They are commonly installing between the BOP stack and choke or kill manifold systems on both land and offshore drilling rigs.

RIGRS API 16C hose assemblies are manufacturing according to applicable API requirements and can be supplingd with pressure testing, traceability documentation, and project-specific end connections.

1.API 16C Licensing Manufacturing:

RIGRS API 16C hose assemblies are manufacturing under an active API 16C license and can be suppling with product traceability, pressure test records, and supporting quality documentation.

2.Fire-Resistant Protective Construction:

Our lines are wrappinging in built-in fire insulation layers and sheeted with an interlocking stainless steel outer armor. This ensures full operational control of your choke and kill manifold during critical thermal or wellhead fire emergencies.

3.Optional Sour Service Configuration:

To neutralize sulfide stress cracking (SSC) risks, the inner core utilizes a custom-formulating elastomeric matrix that prevents sour gas permeation. This is pairing with hardness-controllingd, NACE-compliant end fittings.

4.Integral Forged Metal Unions:

End connections are forgingd as a single piece from premium AISI 4130 alloy steel. They are permanently attacing to the high-tensile steel wire carcass via massive hydraulic swaging systems, completely removing the hazardous stress vectors found in welding alternatives.

5.Inner Fluid Tube:

Ultra-smooth, oil-resistant synthetic polymer (HNBR / NBR base) optimized for high H_2S and CO_2 saturation.

6.Reinforcement Matrix:

Multiple layers of high-tensile steel wire spirals, cross-wound to absorb extreme pressure surges and longitudinal loads.

7.Fire-Resistant Shielding:

Premium multi-layer ceramic fabric and glass fiber barriers tailored for extended fire survival under full load.

8.External Mechanical Armor:

Continuously interlocking stainless steel (SUS304/SUS316) outer wrap to provide definitive protection against abrasion, crushing, and physical impacts on the rig floor.

Typical Applications: Typical Applications of API 16C Kill Line Hose

Our rugged, armored API 16C choke & kill hoses provide flexible, heavy-duty connection lines across critical high-pressure oilfield configurations:

BOP Stack Choke and Kill Lines: Linking the blowout preventer outlets directly to the upstream choke and kill manifolds on land rigs and offshore platforms.

Acid Injections & Hydraulic Fracturing: Transporting corrosive chemical blends and proppant slurries at extreme pressures during well intervention cycles.

Coiled Tubing Mud Circulation Hookups: Serving as a flexible, high-pressure line between mobile workover components and the rigid standpipe.

Engineering Notes & After-sales support

The following installation and operating recommendations should be considered when using API 16C kill line hose assemblies, field engineers must adhere to these operating boundaries:

1.Bending Radius Constraints:

Never bend the hose assembly beyond its specified Minimum Static Bend Radius. Over-bending can distort the interlocking stainless steel armor and cause internal steel wire friction, significantly shortening the hose’s lifespan.

2.Strict Volumetric Flow Limits:

To mitigate premature erosion of the internal tube core, slurry and gas velocities should be restricting according to standard API RP 14E guidelines. When high volumes of sand or fracturing proppant are present, maintain liquid flow velocities below 6 m/s.

3.External Temperature Limits:

While the integrating insulation protects against short-term external fire events, standard continuous operating ambient temperatures should be maintaining between -20°C and +82°C.

FAQ – RIGRS Kill Line Hose

Q1: What audit-ready verification paperwork is providing with your API 16C choke & kill hoses?

A: Every hose assembly is issuing with a comprehensive quality documentation package. This contains our Official API Spec 16C Monogram License, an individual Factory Acceptance Test (FAT) Report charting a 15-minute high-pressure hydrostatic test hold at 1.5x working pressure, chemical and physical Material Test Reports (MTRs) tracking the forging AISI 4130 end fittings, and NDT test logs.

Q2: Is the stainless steel outer armoring wrap removable, or is it permanently attachingd to the hose body?

A: The interlocking stainless steel armor is integratingd directly into the custom coupling sleeve design during the factory swaging process. It is permanent and non-removable. This ensures that the fire insulation layers remain hermetically sealingd against oil leaks, weathering, mud buildup, and saltwater corrosion throughout the service life of the hose.

Q3: What is the typical production and shipping turnaround time for a 3″ 10,000 PSI Choke & Kill assembly?

A: For mainstream industrial dimensions (2″ and 3″ ID configurations), we maintain an extensive inventory of raw cured core lengths and forged metal unions. Standard custom assembly fitting, hydro-testing, armor wrapping, and export packaging typically require 12 to 18 business days. Contact our prioriinged procurement desk if you need immediate factory allocation for an urgent rig-down situation.

Q4: Is kill line hose the same as API 16C hose?

A: Kill line hose is commonly supplied as API 16C flexible choke and kill hose. The final specification should be confirming according to working pressure, medium, temperature, connection and project requirements.

Q5: Can you supply both choke line hose and kill line hose?

A: Yes. RIGRS can supply flexible choke line hose, kill line hose and choke and kill hose assemblies according to project requirements.

Q6: Can you help identify the hose from photos?

A: Yes. Please send photos of the hose body, marking, nameplate and both end connections. We can help check the basic specification before quotation.

Q7: Can the end connections be customized?

A: Yes. End connections can be supplied according to the project requirement, including flange, union, hub, thread or other specified connection types.

Q8: Can the kill line hose be using for H2S service?

A: Sour service requirements should be confirmed before quotation. Please tell us whether H2S service is requiring and provide the related working condition if available.

Q9: Can you supply hose for offshore drilling rigs?

A: Yes. We can supply API 16C flexible choke and kill hose assemblies for land rigs, offshore rigs and well control equipment packages, according to confirmed specifications.