Boiler Tube
Seamless steel tubes designed for high-temperature and high-pressure boiler systems. Manufactured to international standards for reliable performance in power generation, petrochemical, and industrial heating applications.
Boiler tubes are seamless steel tubes specifically designed for high-temperature and high-pressure service in boiler systems. They transfer heat from combustion gases to water or steam, operating under extreme conditions. Our boiler tubes are manufactured using premium quality steel billets and undergo rigorous testing to ensure they meet the stringent requirements of power plants, industrial boilers, and heat exchangers.
Available in carbon steel, alloy steel, and stainless steel grades to suit different operating temperatures and pressures. All products comply with ASTM, ASME, DIN, and EN standards.
Technical Specifications
Standards
Seamless boiler tube standards and grades supplied by CREATEEL for high-pressure and thermal service.
| Standard | Available Steel Grades | Description |
|---|---|---|
| ASTM A179 | – | Seamless cold-drawn low-carbon steel heat-exchanger and condenser tubes |
| ASTM A192 | – | Seamless carbon steel boiler tubes for high-pressure service |
| ASTM A210 | Gr.A-1, Gr.C | Seamless medium-carbon steel boiler tubes for superheaters |
| EN 10216-2 | P195GH, P235GH, P265GH | Seamless steel tubes for pressure purposes at elevated temperature |
| GB/T 5310 | 20G, 15CrMoG, 12Cr1MoVG | Seamless steel tubes for high-pressure boilers |
| GB/T 3087 | 10#, 20# | Seamless steel tubes for low & medium pressure boilers |
Seamless Boiler Tube Dimensions (OD × Wall Thickness)
Wall thickness in mm. ✓ = regularly produced by Chinese seamless mills (cold-drawn & hot-rolled). Non-standard OD/WT available on request.
| OD (mm) | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 7 | 8 | 9 | 10 | 12 | 14 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 19 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | – | – | – | – | – |
| 22 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | – | – | – | – | – |
| 25 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | – | – | – | – | – |
| 28 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | – | – | – |
| 32 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | – | – | – |
| 38 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | – | – | – |
| 42 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | – | – | – |
| 45 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | – | – | – |
| 51 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | – | – | – |
| 57 | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | – |
| 60 | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | – |
| 63.5 | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | – |
| 76 | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | – |
| 89 | – | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – |
| 102 | – | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – |
| 108 | – | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – |
| 114 | – | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – |
| 133 | – | – | – | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 159 | – | – | – | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 219 | – | – | – | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Chemical Composition (%)
| Grade | C ≤ | Mn ≤ | Si ≤ | P ≤ | S ≤ |
|---|---|---|---|---|---|
| 20G | 0.17-0.23 | 0.35-0.65 | 0.17-0.37 | ≤0.025 | ≤0.015 |
| Q235 | 0.22 | 1.40 | 0.35 | 0.035 | 0.035 |
| Q345 | 0.20 | 1.70 | 0.55 | 0.030 | 0.030 |
| ASTM A53 Gr.B | 0.30 | 1.20 | — | 0.050 | 0.045 |
| API 5L Gr.B | 0.26 | 1.20 | 0.45 | 0.030 | 0.030 |
| S235 | 0.17 | 1.40 | — | 0.035 | 0.035 |
| S355 | 0.22 | 1.60 | 0.55 | 0.030 | 0.030 |
Mechanical Properties
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| Q195 | 315–430 | ≥195 | ≥33 |
| Q235 | 375–500 | ≥235 | ≥26 |
| Q345 | 470–630 | ≥345 | ≥22 |
| ASTM A53 Gr.B | ≥415 | ≥240 | — |
| API 5L Gr.B | 415–760 | ≥245 | — |
| S235 | 360–510 | ≥235 | ≥26 |
| S355 | 470–630 | ≥355 | ≥22 |
Note: Mechanical properties may vary based on pipe diameter and wall thickness. All values are minimum unless specified as range.
Available Coating & Surface Treatments
Black Paint / Varnish
Standard coating for structural and scaffolding applications. Provides basic corrosion protection.
Hot-Dip Galvanized
Zinc coating (40–120μm) for superior corrosion resistance. Ideal for outdoor and marine environments.
3PE / FBE Coating
Three-layer polyethylene or fusion bonded epoxy for oil & gas pipelines with harsh conditions.
Epoxy Coating
Internal or external epoxy lining for water supply and fire fighting systems.
Oiled / Bare
Light oil coating or bare finish for applications where further processing will be done.
PVC / PE Coating
Plastic coating for greenhouses, scaffolding frames, and decorative applications.
Packing & Shipping Details
📦 Packing Methods
- Bundles with steel straps
- Wrapped with waterproof plastic woven bag
- Ends protected by plastic caps
- Bulk in container (for large OD pipes)
- Crates for small diameter pipes
- Custom packing as per buyer requirements
🚢 Shipping Information
- MOQ: 10 tons per size
- Delivery: 15–30 days after deposit
- Port: Tianjin / Xingang, China
- Container: 20ft / 40ft GP/HQ
- Payment: T/T, L/C, D/P accepted
- Insurance: CIF terms include All Risk
💡 Tip: We offer comprehensive inspection services including mill test certificates (MTC) as per EN 10204 3.1/3.2, third-party inspection (SGS, BV, TUV), and full traceability documentation.
Manufacturing Process
Our seamless steel pipes are manufactured through a rigorously controlled 12-step hot rolling process — from billet heating to final inspection — ensuring uniform mechanical properties, precise dimensions, and defect-free surfaces.
Billet Inspection & Cutting
Continuous-cast round billets are ultrasonically tested for internal defects, then cut to required lengths by abrasive sawing or shearing.
Rotary Hearth Heating
Billets are heated uniformly to 1200–1280°C in a rotary hearth furnace to achieve optimal plasticity for piercing while preventing overheating or decarburization.
Mannesmann Piercing
The heated billet is pierced over a pointed mandrel between two skewed rolls to form a hollow shell (mother tube), typically achieving a 3–4:1 elongation ratio.
Mandrel Mill Rolling
The hollow shell is rolled over a retained mandrel through a 5–8 stand continuous mandrel mill to reduce wall thickness and achieve uniform OD/WT dimensions.
Mandrel Extraction & Reheating
The mandrel is stripped from the shell; the shell is then reheated to ~950°C in an induction furnace before entering the stretch-reducing mill.
Stretch Reducing / Sizing
The pipe passes through 20–24 stands of stretch-reducing mill to achieve the final OD with tight tolerance (±0.5% OD) and uniform wall thickness, without an internal mandrel.
Cooling Bed Cooling
Pipes are transferred to a walking-beam cooling bed for slow, uniform air cooling to prevent bending and residual stress buildup.
Hot/Cold Straightening
Pipes are straightened by multi-roll cross-roll straighteners (6-roll or 10-roll) to achieve straightness ≤1 mm/m and eliminate ovality.
Cutting & End Facing
Pipes are cut to commercial lengths (5.8m/6m/11.8m/random) and both ends are faced and beveled (30°+5°) for welding, with burrs removed.
NDT & Hydrostatic Testing
100% ultrasonic testing for wall thickness and laminations, eddy current testing for surface cracks, and hydrostatic pressure testing to API/GB standards.
Surface Inspection & Marking
Visual and dimensional inspection of OD, WT, length, and surface quality; stenciling grade, heat number, OD×WT, standard, and manufacturer mark.
Final Packaging & Shipping
Pipes are bundled with steel strips, end-protected with plastic caps or bevel protectors, slung with lifting tags, and loaded for shipment with mill test certificates.
Applications
Where our products deliver proven performance across industries worldwide.
Power Plant Boilers
Water-wall, superheater, reheater, and economizer tubes in carbon and alloy grades (SA192, SA210, P11/P22/P91) carry the steam cycle of thermal power stations.
✓ ASME SA-213 / SA-210
Petrochemical Furnaces & Reformers
Cracker, reformer, and heat-exchanger coils in creep-resistant alloys operate continuously at 600–1000°C tube-metal temperatures.
✓ Creep-rupture tested grades
Industrial & Waste-Heat Boilers
Process heat recovery, waste-heat, and package boilers use boiler tube in carbon and low-alloy grades with standard dimensional tolerances.
✓ EN 10216-2 equivalents
Fired Heaters & Heat Exchangers
Refinery fired-heater coils and shell-and-tube exchangers use seamless boiler tube in grades matched to service temperature and hydrogen exposure.
✓ ASTM A106/A335/A213
Marine Boilers
Class-certified boiler and superheater tubes for ship steam plants under LR/DNV/ABS survey.
✓ Class-approved supply
Boiler Repair & Replacement Tube
Fast-delivery replacement tube and bends for boiler outages, including stub-welding and bending services.
✓ Outage-critical delivery
Frequently Asked Questions
What is boiler tube and how is it different from ordinary pipe?＋
Boiler tube is seamless tube made to pressure-part standards (ASME SA-192/210/213, EN 10216-2) with stricter chemistry, hot-tensile and flatten testing, and surface quality fit for welded pressure circuits.
What standards do your boiler tubes comply with?＋
ASME SA-192, SA-210 Gr. A1/C, SA-213 T11/T12/T22/T91, EN 10216-2 (P195–P265GH, 16Mo3, 10CrMo9-10), with EN 10204 3.1 certification.
What size range is available?＋
OD 19–219 mm, wall 2–30 mm typical; U-bends, coils, and custom bends supplied to drawing.
Which grade should I use for my steam conditions?＋
Carbon (SA192/210) to ~425°C; 16Mo3 to ~500°C; T11/T12 to ~550°C; T22 to ~580°C; T91 to ~600°C+ — final selection by creep-rupture design.
What testing is performed on boiler tube?＋
Hydro or eddy-current test on every length, flatten/flaring tests, tensile at room and elevated temperature, hardness, and grain size — plus creep data on alloy grades.
Do you supply bent tubes and coils?＋
Yes — cold and hot bending to drawing, U-bends, and complete coils for boiler manufacture and outage replacement.
What is the minimum order quantity and lead time?＋
Stock sizes from 1–5 tons; produced alloy sizes 4–10 weeks. Outage replacement tube can be expedited — contact us.
Do you supply T91/P91 and other advanced grades?＋
Yes — T91/P91, T22, 10CrMo9-10 with full Q+T heat treatment and step-cooling documentation.
Can you supply marine class certified boiler tube?＋
Yes — LR, DNV, ABS survey and certification for ship boiler tube.
What documentation comes with my order?＋
EN 10204 3.1 MTCs (3.2 on request), hydro/NDT records, elevated-temperature test data, and heat treatment charts.
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