Carbon Steel Seamless Pipes Supplier in the UAE
Carbon steel seamless pipes are hot-rolled or cold-drawn from solid billets with no weld seam, giving them uniform strength around the full circumference and dependable performance under high pressure and temperature. That is why they remain the backbone material for oil and gas transmission, refinery process lines, steam systems, and firefighting networks across the region. Compared with welded pipe, seamless construction eliminates the weld as a potential weak point—a practical advantage for lines exposed to pressure cycling, elevated temperatures, or sour hydrocarbon service.
For buyers seeking a dependable carbon steel seamless pipes supplier in the UAE, Riyaarth Overseas delivers export-quality piping solutions manufactured to internationally recognized standards. We supply ASTM A106 Grade B, API 5L Grade B and X Grades, ASTM A53 Grade B, and ASTM A333 Grade 6 seamless pipes to procurement heads, EPC contractors, MEP companies, traders, and importers across Dubai, Abu Dhabi, Sharjah, and the wider GCC, supporting applications ranging from general process piping to low-temperature service and oil and gas transmission.
What we supply:
- ASTM A106 Grade B Seamless Pipes — for high-temperature service in refineries, boilers, and process plants
- API 5L Grade B / X42–X65 Seamless Line Pipes — for oil, gas, and water transmission pipelines
- ASTM A53 Grade B Seamless Pipes — for general-purpose mechanical, plumbing, and fire protection systems
- ASTM A333 Grade 6 Seamless Pipes — for low-temperature service down to −45°C, including LPG and cryogenic-adjacent lines
- Galvanized Carbon Steel Seamless Pipes — hot-dip galvanized for water lines and corrosive atmospheres
These pipes are consumed daily across UAE refineries, gas plants, district cooling networks, fire protection contracts, and structural fabrication yards — projects that need certified pressure-rated material available quickly, without waiting on mill rolling schedules.
For the current Carbon Steel Seamless Pipe price in the UAE, share your grade, size, schedule, and tonnage with Riyaarth Overseas, and our team will issue a project-specific quotation with delivery terms to your location.
Specifications of Stainless Steel 316/316L Pipes and Tubes
| Parameter | Specification |
|---|---|
| Primary Standards | ASTM A106 / ASME SA106, ASTM A53 / ASME SA53, API 5L (PSL1 & PSL2) |
| Low-Temperature Standard | ASTM A333 / ASME SA333 |
| Grades | A106 Gr A/B/C, API 5L Gr B, X42, X52, X60, X65, A53 Gr B, A333 Gr 6 |
| Type | Seamless (hot finished / cold drawn) |
| Outer Diameter | 21.3 mm to 610 mm (1/2" to 24") seamless; larger sizes on request |
| Wall Thickness | Sch 20 up to Sch XXS |
| Length | Single random (5–7 m), double random (11–13 m), or cut lengths |
| Ends | Plain end, bevelled end (30° for welding), threaded and coupled |
| Surface Protection | Black varnish/oil coated, bare, hot-dip galvanized; 3LPE / FBE coating on request |
| Dimensional Standard | ASME B36.10M |
Carbon Steel Seamless Pipe Schedule Chart
| NPS | OD (mm) | Sch 40 (mm) | Sch 80 (mm) | Sch 160 (mm) | XXS (mm) |
|---|---|---|---|---|---|
| 1/2" | 21.3 | 2.77 | 3.73 | 4.78 | 7.47 |
| 1" | 33.4 | 3.38 | 4.55 | 6.35 | 9.09 |
| 2" | 60.3 | 3.91 | 5.54 | 8.74 | 11.07 |
| 4" | 114.3 | 6.02 | 8.56 | 13.49 | 17.12 |
| 6" | 168.3 | 7.11 | 10.97 | 18.26 | 21.95 |
| 8" | 219.1 | 8.18 | 12.70 | 23.01 | 22.23 |
| 10" | 273.0 | 9.27 | 15.09 | 28.58 | 25.40 |
| 12" | 323.9 | 10.31 | 17.48 | 33.32 | 25.40 |
Note: for 8″ NPS and above, XXS wall is thinner than Sch 160 per ASME B36.10M — always order by the schedule stated on your isometric, not by name alone. Share your exact size list, and we will confirm ex-stock availability and price.
Mechanical Properties
| Grade | Tensile Strength (min) | Yield Strength (min) | Elongation (min, longitudinal) | Notes |
|---|---|---|---|---|
| ASTM A106 Gr B | 415 MPa | 240 MPa | 30% | High-temperature service |
| ASTM A53 Gr B | 415 MPa | 240 MPa | 30% | General purpose |
| API 5L Gr B (PSL1) | 415 MPa | 245 MPa | Per API formula (~21%+) | Line pipe |
| API 5L X52 | 460 MPa | 360 MPa | Per API formula | Higher-strength line pipe |
| ASTM A333 Gr 6 | 415 MPa | 240 MPa | 30% | Charpy impact tested at −45°C |
Higher API X-grades (X60, X65) allow thinner walls at the same design pressure, reducing pipeline tonnage and welding time — a meaningful saving on long transmission runs.
Chemical Composition
| Element | A106 Gr B | A53 Gr B (Type S) | API 5L Gr B (PSL1, SMLS) | A333 Gr 6 |
|---|---|---|---|---|
| Carbon (C) | 0.30 max | 0.30 max | 0.28 max | 0.30 max |
| Manganese (Mn) | 0.29–1.06% | 1.20 max | 1.20 max | 0.29–1.06% |
| Phosphorus (P) | 0.035 max | 0.05 max | 0.030 max | 0.025 max |
| Sulphur (S) | 0.035 max | 0.045 max | 0.030 max | 0.025 max |
| Silicon (Si) | 0.10 min | — | — | 0.10 min |
A106 additionally caps residual elements (Cr, Cu, Ni, Mo, V) to keep weldability and long-term high-temperature behaviour predictable. Many pipes in our stock are multi-certified A106 Gr B / A53 Gr B / API 5L Gr B, letting one heat satisfy several specification call-outs on the same project.
Carbon Steel Seamless Pipe Grades We Supply to the UAE
ASTM A106 Grade B
The default grade for UAE refinery, petrochemical, and utility piping in high-temperature service. Silicon-killed steel with controlled chemistry makes it suitable for steam lines, heaters, and process piping up to elevated temperatures where A53 is not accepted.
API 5L Grade B and X-Grades (X42–X65)
Purpose-made line pipe for hydrocarbon and water transmission, available in PSL1 and PSL2 with the tighter testing and toughness requirements many ADNOC and pipeline specifications demand. X-grades deliver higher strength for reduced wall thickness on long-distance lines.
ASTM A53 Grade B
An economical general-service grade for fire sprinkler systems, compressed air, HVAC, and mechanical applications across UAE buildings and infrastructure. Available in black or hot-dip galvanized, with plain or threaded ends.
ASTM A333 Grade 6
Impact-tested at −45°C for low-temperature lines — LPG handling, refrigeration circuits, and cold-service piping where standard carbon grades risk brittle fracture. Supplied with Charpy test results on the mill certificate.
Seamless vs Welded — Choosing Correctly
Not every line requires seamless. For low-pressure water and structural duty, ERW pipe can cut cost significantly. Where the specification permits both, tell us the service conditions, and we will quote the option that meets the code at the lowest installed cost — and flag where seamless is genuinely mandatory.
Applications of Carbon Steel Seamless Pipes in the UAE
From offshore concessions and mega-refineries to the district cooling and fire protection networks inside its cities, the UAE consumes carbon steel seamless pipe at scale. Common applications include:
- Oil & Gas Production: Flowlines, gathering systems, and wellsite piping in onshore and offshore fields
- Refineries & Gas Plants: Process piping, heater tubes’ adjacent lines, steam and condensate systems to A106 Gr B
- Pipelines: Crude, gas, and water transmission on API 5L Gr B and X-grade line pipe
- Fire Protection: Sprinkler mains, hydrant lines, and pump room piping for civil defence-approved systems
- District Cooling & HVAC: Chilled water headers and distribution piping across towers, malls, and communities
- Power & Steam: Boiler external piping, steam distribution, and condensate return lines
- LPG & Low-Temperature Service: A333 Gr 6 lines for storage terminals and refrigerated systems
- Water Infrastructure: Transmission and pumping station piping, bare or coated
- Structural & Mechanical: Piling, columns, machinery parts, and general engineering in fabrication yards
- EPC Fabrication: Pre-fabricated spools and skids delivered to contractor workshops across the Emirates
Because most UAE plant specifications call for seamless pipe on hydrocarbon and steam service by default, keeping certified A106/API 5L stock locally means contractors can respond to variation orders and shutdown work without mill lead times.
Quality Assurance
Every carbon steel seamless pipe consignment from Riyaarth Overseas is checked against the governing ASTM/API standard and your purchase order before dispatch. Our quality process covers:
- Heat-wise traceability with EN 10204 Type 3.1 mill test certificates (3.2 with third-party inspection on request)
- Verification of chemistry and mechanicals against the certified standard, including multi-certification where applicable
- Dimensional inspection of OD, wall thickness, ovality, straightness, and length; bevel angle checks on welded-end pipe
- Hydrostatic testing per A106/A53/API 5L requirements, with NDE (UT/ET) alternatives where the standard allows
- Charpy V-notch impact testing at −45°C for A333 Gr 6, and at specified temperatures for PSL2 line pipe
- Visual and surface inspection for laps, seams, and pitting; coating thickness checks on galvanized and 3LPE/FBE pipe
- Marking verification — standard, grade, heat, size, and schedule stencilled per specification
- Positive Material Identification (PMI) available on request for mixed-stock or critical orders
FAQs
Products
Industry We Serve
- Oil & Gas industries
- Chemical process industries
- Pump and valve in high pressure component
- Food industries
- Pulp and paper industry
- Aerospace industry
- Power plant
- Mechanical component
- Sugar industry
- Cement industry