Alloy Steel Boiler Tube - ASTM Certified Mill Direct | Kuaima Steel Group

Kuaima Steel Co., Ltd.

Verified Custom manufacturer · 7 yrs ·

China

Customizable Rock-bottom price

$1050 1-49 ton Base price

$1004 50-99 ton 4.4% off

$981 ≥100 ton 6.6% off

Price validity: subject to market conditions

Supplier's customization ability

Drawing-based customization
Sample-based customization
Full customization

Quantity

Minimum order quantity: 1 ton

Shipping total: To be negotiated

Subtotal of goods US$ 1,050.00

Start order request

Payment and delivery

Payment:: by contract — deposit, balance after your inspection
Lead time:: confirmed with the quotation
Packaging:: standard export packing
Samples:: available on request

Product details

Technical Specifications of Alloy Steel Boiler Tube

Property	Parameter	Description
Product Name	Alloy Steel Boiler Tube	Seamless alloy steel tube designed for high-temperature and high-pressure boiler service
Material Grade	ASTM A213 T11 / T22 / T91	Equivalent to EN 10216-2 13CrMo4-5, 10CrMo9-10, X10CrMoVNb9-1; JIS G3462 STBA 24/26; GB 5310 12Cr1MoV, 15CrMo
Standard Compliance	ASTM A213 / ASME SA213	Also conforming to EN 10216-2, JIS G3462, GB 5310 upon request
Carbon (C)	0.05 – 0.15%	Varies by grade; T22 typical max 0.15%, T91 range 0.08–0.12%
Chromium (Cr)	1.00 – 9.50%	T11: 1.00–1.50%; T22: 1.90–2.60%; T91: 8.00–9.50%
Molybdenum (Mo)	0.44 – 1.10%	T11: 0.44–0.65%; T22: 0.87–1.13%; T91: 0.85–1.05%
Manganese (Mn) / Silicon (Si)	Mn: 0.30 – 0.60% / Si: 0.25 – 0.50%	Controlled within ASTM A213 specification limits for each grade
Tensile Strength	415 – 620 MPa	T11: ≥415 MPa; T22: ≥415 MPa; T91: ≥585 MPa per ASTM A213
Yield Strength	205 – 415 MPa	T11: ≥205 MPa; T22: ≥205 MPa; T91: ≥415 MPa per ASTM A213
Elongation	≥20%	Minimum elongation in 50 mm gauge length, varies slightly by grade and wall thickness
Outer Diameter (OD)	6.0 – 219.1 mm (1/4'' – 8'')	Custom OD available upon request; tight tolerance per ASTM A213
Wall Thickness (WT)	1.0 – 30.0 mm	Scheduled or custom wall thickness; minimum wall tolerance per standard
Length	5,000 – 18,000 mm	Random, fixed, or cut-to-length; typically supplied in random lengths
Surface Finish	Pickled / Oiled / Black Painted	Inner and outer surfaces cleaned; ID may be honed or polished on request
Application	Power plant boilers, superheaters, reheaters, heat exchangers	Suitable for high-temperature steam service up to 600 °C depending on grade
Certification	ISO 9001, PED 2014/68/EU, TÜV, Mill Test Certificate EN 10204 3.1	Third-party inspection (SGS, BV, Lloyd's) available upon request
Packaging	Bundled with steel strips, plastic caps on ends	Wrapped in waterproof cloth or packed in wooden cases for export
MOQ	1 Metric Ton	Smaller quantities negotiable for trial orders; stock items may ship immediately

Alloy Steel Boiler Tube - ASTM Certified Mill Direct | Kuaima Steel Group

Alloy steel boiler tube serves critical roles in high-temperature, high-pressure steam generation systems across power plants, petrochemical refineries, and industrial heating facilities. Manufactured from chromium-molybdenum alloy compositions, these tubes deliver exceptional creep resistance and thermal stability under prolonged service at elevated temperatures. Kuaima Steel Group supplies ASTM-certified alloy boiler tubes directly from partnered mills, ensuring full traceability, competitive mill-direct rates, and consistent metallurgical quality. Whether you require standard grades for utility boilers or specialized compositions for supercritical steam applications, our technical team provides end-to-end support from grade selection through final delivery.

Alloy steel boiler tube supplier

What Is Alloy Steel Boiler Tube?

An alloy steel boiler tube is a seamless or welded tubular product specifically engineered for heat transfer and pressure containment in boiler systems. These tubes incorporate alloying elements—primarily chromium (Cr), molybdenum (Mo), and occasionally vanadium (V)—to enhance oxidation resistance, high-temperature strength, and long-term creep performance. Unlike carbon steel alternatives, alloy boiler tubes maintain structural integrity at service temperatures exceeding 450°C (842°F), making them indispensable in superheater, reheater, and economizer sections of modern boiler assemblies.

Alloy Steel Boiler Tube Technical Specifications

Our alloy steel boiler tubes are produced in compliance with internationally recognized standards, ensuring reliable performance across demanding thermal environments. Below are the key specifications covering the most commonly requested grades:

Alloy steel boiler tube manufacturer

Standard	Grade	Chemical Composition	Min. Tensile Strength	Max. Service Temp.
ASTM A213	T11	1.25Cr-0.5Mo	415 MPa (60 ksi)	570°C (1058°F)
ASTM A213	T22	2.25Cr-1Mo	415 MPa (60 ksi)	600°C (1112°F)
ASTM A213	T91	9Cr-1Mo-V	585 MPa (85 ksi)	650°C (1202°F)
ASTM A213	T5	5Cr-0.5Mo	415 MPa (60 ksi)	590°C (1094°F)
ASTM A335	P11	1.25Cr-0.5Mo	415 MPa (60 ksi)	570°C (1058°F)
ASTM A335	P22	2.25Cr-1Mo	415 MPa (60 ksi)	600°C (1112°F)

Dimensional range: Outside diameter from 6.0 mm to 219.1 mm, wall thickness from 0.8 mm to 30 mm, lengths up to 18 meters per ASTM A213/A335 tolerances. All tubes undergo hydrostatic testing at pressures calculated per ASME Section I requirements, along with non-destructive examination including ultrasonic testing (UT) and eddy current testing (ECT) for seamless product verification.

Key Applications of Alloy Steel Boiler Tubes

These premium-grade tubes find extensive application in:

Thermal power stations: Superheater and reheater tube banks operating at steam pressures above 17 MPa
Petrochemical plants: Fired heater tubes and heat recovery steam generators (HRSGs)
Industrial boilers: Economizer sections and waterwall tubing in biomass and waste-to-energy facilities
Nuclear power: Secondary-loop steam generators requiring outstanding anti-corrosion properties and creep resistance

Frequently Asked Questions

What is the MOQ for alloy steel boiler tubes?

Our minimum order quantity is typically 1 metric ton per grade and size combination. For less common specifications such as T91 or T5 in non-standard dimensions, the MOQ may increase to 2–3 metric tons depending on mill scheduling.

Alloy steel boiler tube factory

Do you provide material test certificates?

Yes. Every shipment includes EN 10204 Type 3.1 Mill Test Certificates (MTC) documenting chemical composition, mechanical properties, hydrostatic test results, and NDE records. Third-party inspection by agencies such as SGS, TÜV, or BV can be arranged upon request.

What is the typical delivery time?

Standard alloy boiler tube grades (T11, T22) in stock dimensions ship within 7–15 business days. Made-to-order specifications, including T91 and custom lengths, generally require 30–45 days from order confirmation depending on mill production cycles.

Can you cut to custom sizes?

Absolutely. We offer precision cutting services with tolerances of ±1 mm on length. Additional processing including beveling, deburring, and protective end caps is available to meet your project installation requirements.

Get a Competitive Quote for Alloy Steel Boiler Tube

Kuaima Steel Group delivers ASTM-certified alloy steel boiler tubes at cost-effective mill-direct rates with full documentation and flexible logistics solutions worldwide. Contact our sales engineers today with your grade, dimensions, and quantity requirements to receive a detailed quotation within 24 hours. We support EXW, FOB, CFR, and CIF delivery terms to major ports globally.

Ratings & Reviews

4.5

Based on 8 reviews

5 5

4 2

3 1

2 0

1 0

Philip Hargreaves

United Kingdom

2025-02-12

Precision Cut-to-Length T22 Tubes Saved Us Fabrication Time

Needed 7 tons of ASTM A213 T22 reheater tubes, 50.8mm OD x 6.35mm, cut to 4,250mm lengths with beveled ends for direct welding. Kuaima delivered exactly to spec—length tolerance was within ±0.5mm, tighter than the ±1mm they advertise. This eliminated our in-house cutting step entirely and sped up coil assembly by two days. All 3.1 certificates and ECT reports were bundled electronically before the cargo even arrived at Felixstowe. Genuinely impressed with the attention to detail on this order.

Karen Mitchell

United States

2025-03-06

Initial Delay Resolved – Final Product Met Spec

Ordered 3 tons of A213 T5 (5Cr-0.5Mo) in 60.3mm OD x 5.54mm WT for a petrochemical heat exchanger application. Original delivery estimate was 30 days but it stretched to 48 days due to a mill scheduling conflict. This caused some headaches with our project timeline. However, Kuaima's team communicated the delay proactively and offered partial air freight at their cost for the most urgent portion. The tubes themselves were excellent—hydrostatic tested, UT verified, and dimensionally accurate. Issue was resolved professionally.

Mohammed Al-Rashidi

UAE

2025-03-28

Competitive Pricing on P11 Pipes for Fired Heater Project

We procured 10 tons of ASTM A335 P11 seamless pipes, 168.3mm OD x 14.27mm WT, for a refinery fired heater revamp in Jubail. The mill-direct rate was significantly lower than trading company quotes we received. MTCs were comprehensive with full mechanical and chemical data. SGS inspection was coordinated at the mill before shipment. Delivery took 35 days FOB—acceptable for made-to-order. Would have appreciated slightly faster communication on shipping document preparation, but overall a good procurement experience.