API HOSE
DO-Yamamoto Engineering India Pvt. Ltd., in partnership with Fujiwara Engineering Japan, manufactures and supplies a comprehensive range of hoses, pup joints, and valves for the oil & gas, drilling, cementing, and marine sectors. This catalog summarizes technical data extracted from individual product datasheets, presented with comparative tables and charts for quick reference.
The product range spans low-pressure suction/discharge hoses through to ultra-high-pressure (up to 22,500 psi burst) frac, cement, and choke & kill hoses, plus API-rated hammer union pup joints and low-torque plug valves.
Comparative Charts
Products
Multi-purpose Suction & Discharge Hose
For delivery of gasoline, diesel oil, fuel oil with aromatic content up to 50%; also applicable for seawater, fresh water, mud, air and other general-purpose fluids.
| Specification | Value |
|---|---|
| Temperature Range | -30°C to +100°C |
| Negative Pressure | -90 kPa |
| Working Pressure | 10 bar / 150 psi |
Pup Joints
Hammer-union-ended pup joints for fast, easy make-up and break-out of temporary flow lines. The lightest pup joint available for rapid handling.
| Specification | Value |
|---|---|
| Sizes | 2" to 4" |
| Lengths | 2 ft. to 12 ft. (custom on request) |
| Pressure Rating | 6,000 – 20,000 psi |
| End Connection | Butt weld or Threaded |
| Service | Standard and H2S |
| Material | ASTM / AISI steel |
R13 Hydraulic Hose
High pressure hydraulic lines and hydrostatic transmission lines; suitable for impulse surge lines with extended life cycles, for petroleum, synthetic or water-based fluids.
| Specification | Value |
|---|---|
| Working Pressure (WP) | 6000 PSI series shown |
| Outer Armor | Stainless steel strip wound (optional) |
Rig Hose 2" Fig. 1502 Integral
One-piece, no-skive integral fitting design — no adapters, no welded parts. Long lengths up to 61 m (200 ft) reduce the number of unions, improving safety. Manufactured by bar drilling from premium raw material and conforms to API requirements.
| Specification | Value |
|---|---|
| Dash Size | 32 (2") |
| Max Length | 61 m (200 ft) |
Suction & Delivery Mud and Oil Hose
Suction and delivery of petroleum products with aromatic content up to 50% and drilling mud mixed with oil. Flame-retardant cover compound per ASTM C-542.
| Specification | Value |
|---|---|
| Tensile Breaking Load | 2,000 kgf (2"ID) / 4,000 kgf (3"ID) / 7,000 kgf (others) | Temperature | -4°F to +194°F |
BOP Hydraulic Hose (Armoured)
Flexible BOP hose for hydraulic control of the Blowout Preventer. Operating pressure 6000 PSI. Can be directly exposed to flame for more than 5 minutes at 704°C, ensuring the control system can operate under emergencies. DNV GL certified as per API 16D.
| Specification | Value |
|---|---|
| Operating Pressure | 6,000 PSI | Fire Resistance | 704°C @ 5 min (API 16D Clause 14.6.2.2) | Certification | DNV GL, API 16D |
BOP Hydraulic Hose (Non-Armoured)
BOP hose for hydraulic control of the Blowout Preventer, operating at 3000/5000 PSI. Fire resistant to 704°C for more than 5 minutes. DNV GL certified as per API 16D.
| Specification | Value |
|---|---|
| Operating Pressure | 3,000 / 5,000 PSI | Fire Resistance | 704°C @ 5 min (API 16D Clause 14.6.2.2) |
High-Pressure Rotary Drilling / Vibrator / Cement Hose (Built-In Coupling)
Commonly used in drilling, cementing and work-over service as a flexible connection for mud manifold and cement manifold, transporting water-base mud, oil base mud and washing fluid at high pressure in large volumes.
| Specification | Value |
|---|---|
| Standard | API 7K Spec. — Monogram No. 7K-0556 | Working Temperature | -20°C to +82/100/121°C | Flexibility Level | FSL 0, FSL 1, FSL 2 | Max Continuous Length | 30 m |
High Pressure Decoking Hose
Attached to a drill stem, specially designed to unload coke from the silo using warm, high-pressure water. Manufactured to API 7K specifications.
| Specification | Value |
|---|---|
| Standard | API Spec 7K | Working Temperature | -20°C to +82/100/121°C | Flexibility Level | FSL 0, FSL 1, FSL 2 | Max Continuous Length | 45 m | Couplings | Swaged — API standard flanges or equivalent |
Flexible Choke & Kill Hose
API 16C choke and kill line — an integral part of surface and subsea blowout prevention equipment. Allows pumping fluid to the well when normal circulation through the drill string cannot be used, and applies back pressure while circulating out formation fluid influx following a kick. Standard and sour service.
| Specification | Value |
|---|---|
| Standard | API Spec 16C | Temperature Range | Temperature Range -18°C to +66°C | Flexibility Level | FSL0 – FSL3 | Max Continuous Length | 45 m |
High Pressure Flexible Fracturing Hose
Used for acidizing fracturing, sand fracturing and hydraulic fracturing in well completion operations; transports water-based, foam, and acid-based fracturing fluids under high pressure. Tested at 22,500 PSI for 24 hours.
| Specification | Value |
|---|---|
| Standard | API 7K Spec. | Inner Layer | Polymer composite (UHMPE liner), full flow | Temperature Range | -20°C to +100°C |
High Pressure Cementing & Circulating Hose Loop
Composed of swivel joints and straight pipe; mainly used for transporting fluid in high pressure discharge lines, well testing lines, cementing slurry lines and other delivery lines. Good flexibility, shock and vibration resistance; installs and removes quickly.
| Specification | Value |
|---|---|
| Material | Alloy steel | Size | 1", 1-1/2", 2", 3", 4" | Length | 6', 8', 10', 12' | Operating Temp. | -29°C to 121°C | Operating Pressure | 5,000 – 20,000 PSI | Service | Standard and H2S | Swivel Joint Types | Style 10, 20, 30, 40, 50, 60, 70, 80, 100 |
High-Pressure Cement Hose (Swaged Couplings)
Used in well cementing operations to deliver high-pressure cement slurry from the cementing pump to the top drive or other injection points on offshore and onshore rigs, ensuring safe and efficient placement of cement in the wellbore.
| Specification | Value |
|---|---|
| Standard | API Spec 7K — Monogram No. 7K-0556 | Flexibility Level | FSL0 | Temperature Range | -20°C to +82/100/121°C | Max Continuous Length | 45 m |
High-Pressure Cement Hose (Swaged Couplings)
Used in well cementing operations to deliver high-pressure cement slurry from the cementing pump to the top drive or other injection points on offshore and onshore rigs, ensuring safe and efficient placement of cement in the wellbore.
| Specification | Value |
|---|---|
| Standard | API Spec 7K — Monogram No. 7K-0556 | Flexibility Level | FSL0 | Temperature Range | -20°C to +82/100/121°C | Max Continuous Length | 45 m |
High-Pressure Mud Hose — Rotary / Vibrator Drilling Hose (5000 & 7500 PSI, Swaged Couplings)
Used in oil and gas drilling rigs to transfer high-pressure drilling mud from the standpipe to the swivel (rotary hose) and from the mud pump to the standpipe (vibrator hose). Accommodates rig movement and isolates vibration during drilling operations. Also used as a flexible connection for cement delivery.
| Specification | Value |
|---|---|
| Standard | API Spec 7K — Monogram No. 7K-0556 | Flexibility Level | FSL1 & FSL2 | Max Continuous Length | 45 m |
Low Torque Plug Valve
Built to meet and exceed the industry’s most stringent requirements in high pressure and erosive service conditions. Constructed of high strength forged alloy steel bodies with abrasion-resistant plug inserts for reliability and durability. Used to isolate flow from either direction — suited to cementing, fracturing, acidizing, coiled tubing and sand control.
| Specification | Value |
|---|---|
| Working Pressure | 2,000 – 15,000 PSI | Nominal Pipe Size | 1", 1-1/2", 2", 3" | End Connection | Threaded, Fig 1002, Fig 1502 | Service | Sour gas service available |
