Six specialized tube categories for power boilers, industrial heat exchangers, and process heaters — from carbon steel to Cr-Mo alloy grades.
Seamless carbon steel boiler tubes for high-pressure service. Cold-drawn with minimum wall thickness — standard choice for waterwall panels, economizers, and evaporator sections in utility and industrial boilers.
Seamless medium-carbon steel boiler and superheater tubes. Grade A-1 and Grade C with improved high-temperature strength for superheater and reheater sections in utility boilers.
Chromium-molybdenum alloy steel tubes for high-temperature superheater and heat exchanger service. T11 (1.25Cr-0.5Mo) and T22 (2.25Cr-1Mo) grades with superior creep strength and oxidation resistance.
Seamless steel tubes for pressure purposes to European standard EN 10216-2. Non-alloy and alloy steel grades including P235GH, P265GH, 16Mo3, 13CrMo4-5, and 10CrMo9-10 for European boiler projects.
Seamless steel tubes for low and medium pressure boilers per Chinese standard GB 3087. Widely used in industrial boilers, heating boilers, and low-pressure heat exchangers in Asian and African markets.
Seamless tubes cold-bent into U-shape for shell-and-tube heat exchangers. Stress-relief heat treated after bending, with hydraulic and eddy current testing of bend zones. Custom bend radii and leg lengths.
From premium steel billets to finished cold-drawn tubes — every step is controlled to deliver the dimensional precision and surface quality required for critical boiler service.
Premium killed-steel billets with controlled chemistry, low sulfur/phosphorus, and full cast analysis verified by OES spectrometer.
Billets heated to 1200°C+ and pierced on a Mannesmann piercing mill, then hot-rolled to hollow shell on a continuous mandrel or pilger mill.
Hot-rolled hollows are cold-drawn through dies and over mandrels to achieve precise OD, wall thickness, and superior surface finish with tighter tolerances.
Normalizing, annealing, or tempering per material specification. Stress-relief annealing for cold-drawn tubes to restore ductility and remove residual stress.
100% eddy current inspection per ASTM E309 or equivalent for detection of surface and near-surface defects. Ultrasonic testing available as supplementary.
Hydrostatic test per ASTM A450, dimensional inspection (OD, WT, length, straightness), and visual inspection. EN 10204 3.1/3.2 MTC issued.
Comprehensive dimensional range, material grades, applicable standards, and testing requirements.
| Parameter | Specification Range |
|---|---|
| Outer Diameter (OD) | 10.3mm – 127.0mm (3/8" – 5") |
| Wall Thickness (WT) | 1.24mm – 12.7mm (0.049" – 0.500") |
| Tube Length | 5.8m, 6m, 12m standard; random lengths; U-bend to specification |
| Carbon Steel Grades | ASTM A192, ASTM A210 Gr.A-1/Gr.C, ASTM A179, EN 10216-2 P235GH/P265GH, GB 3087 Grade 10/20 |
| Alloy Steel Grades | ASTM A213 T11 (1.25Cr-0.5Mo), T22 (2.25Cr-1Mo), T5 (5Cr-0.5Mo), T9 (9Cr-1Mo); EN 10216-2 16Mo3, 13CrMo4-5, 10CrMo9-10 |
| Stainless Steel Grades | ASTM A213 TP304, TP304L, TP316, TP316L, TP321, TP347H (on request) |
| Applicable Standards | ASTM A192/A192M, ASTM A210/A210M, ASTM A213/A213M, ASTM A179/A179M, EN 10216-2, GB 3087, GB 5310 |
| Manufacturing Process | Hot-finished or cold-drawn seamless (SMLS) |
| Heat Treatment | Normalized, annealed, or quenched & tempered per grade specification. Stress-relief annealed after cold drawing and U-bending |
| Tube Ends | Plain end (square cut), beveled end; U-bend ends plain or beveled per customer drawing |
| Surface Condition | Cold-drawn bright finish, pickled, or shot-blasted per specification |
| NDT Requirements | 100% eddy current testing (ECT) per ASTM E309/E426; ultrasonic testing (UT) optional; PMI for alloy grades |
| Hydrostatic Test | Per applicable ASTM/ASME standard; minimum hold time 5 seconds; or ECT in lieu of hydrotest per ASTM A450 |
| Mechanical Testing | Tensile (room & elevated temp), hardness (HB/HRB/HRC), flattening test, flaring test, reverse flattening (alloy grades) |
| Chemical Analysis | OES spectrometer per ASTM A751. Product analysis on each heat. Carbon equivalent and PMI verification available |
| U-Bend Specifications | Minimum bend radius 1.5D (typical 2D–3D); wall thinning ≤17% at extrados; stress-relief annealed after bending; bend zone ECT |
| Documentation | EN 10204 3.1 MTC (standard), EN 10204 3.2 (third-party witness — SGS, BV, TUV, LR), PED 2014/68/EU compliance |
From stringent material traceability to precision cold-drawing, we supply boiler tubes that perform reliably under the most demanding thermal and pressure conditions.
Complete heat-to-heat traceability from steel mill to finished tube. Every tube identified with heat number, lot number, and MTC reference per EN 10204 3.1.
Carbon steel (A192, A210), Cr-Mo alloy (T11, T22), and stainless steel grades all manufactured in-house. Single-source supply simplifies procurement.
State-of-the-art cold-drawing benches achieve OD tolerance ±0.1mm, WT tolerance ±10%, and excellent surface finish for optimized heat transfer.
In-house CNC-controlled U-bending with mandrel support for consistent bend quality. Post-bend stress relief and 100% bend zone ECT inspection.
In-house mechanical testing, OES chemical analysis, eddy current, ultrasonic, hydrostatic, PMI, and metallography. Third-party witness testing routinely accommodated.
Boiler tubes packed in seaworthy wooden crates or steel frames with end protectors. Containerized and break-bulk shipping from Tianjin port to all global destinations.
These precision tubes are critical components in thermal power plants, process industries, and HVAC systems worldwide.
Waterwall panels, superheaters, reheaters, and economizers in coal, gas, and oil-fired power stations.
Process steam boilers for refineries, chemical plants, pulp & paper mills, and food processing facilities.
HRSG tube bundles for combined-cycle gas turbine power plants recovering exhaust heat for steam generation.
Crude oil heaters, hydrotreater feed heaters, and reformer furnace tubes in petroleum refineries.
Straight and U-bend tube bundles for chemical process heat exchangers, condensers, and feedwater heaters.
Steam generator tubes and auxiliary heat exchanger tubing for nuclear power plant secondary circuits.
Superheater and economizer tubes in municipal solid waste incineration boilers with corrosion-resistant alloys.
Condenser and evaporator tubes for commercial and industrial HVAC chillers and heat pump systems.
Contact our engineering team with your specification, OD, wall thickness, grade, and quantity. We provide competitive pricing and complete MTC documentation. Response within 24 hours.
✉ Email Inquiry 💬 WhatsApp
