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Seamless Boiler Tube

High pressure seamless boiler pipe ASTM A192 for power plant steam systems

ASTM A210 Grade C seamless boiler tubing with high temperature resistance

Product Name: Seamless Boiler Tube, High Pressure Boiler Tube
Applications: Superheated pipelines, steam pipelines, boiling water tubes and boiler systems
Outer Diameter: 34 mm - 609.6 mm
Wall Thickness: 1.65 mm - 22 mm
Length: 0.5 m - 20 m
Standards: ASTM A179, ASTM A192, ASTM A210, ASTM A213, EN 10216, BS 3059, JIS G3454, JIS G3456, JIS G3461
Grades: T2, T5, T9, T11, T12, T22, T23, T24, T36, T91
Ends: plain ends or beveled ends; other end preparation upon request
Surface: Black painting, oil painting, anti-rust oil, anti-corrosion coating
Packing: Bundled, plastic caps plugged, waterproof paper or bag wrapped

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Overview
Specification
Standard
Process
FAQ

Seamless (SMLS) Boiler Pipes & Tubes

Seamless boiler tubes are used in boilers, superheaters, reheaters, economizers, steam pipelines and high-temperature pressure equipment. Forever Steel supplies carbon steel and alloy steel boiler tubes according to standards such as ASTM A192, ASTM A210, ASTM A213, EN 10216 and JIS boiler tube specifications. Buyers should confirm the working temperature, pressure condition, standard, grade, outside diameter, wall thickness, length, heat treatment and testing requirements before quotation.

1. Technical Specifications

We provide a comprehensive range of dimensions to meet diverse engineering requirements:

Outside Diameter (OD):34 mm – 609.6 mm (1" to 24")

Wall Thickness (WT):1.65 mm – 22 mm (SCH 10 to SCH XXS)

Length:5.8m, 6m, 11.8m, 12m, or Customized (up to 18m for specific boiler projects)

Ends:Plain end, Beveled end, or Threaded with coupling.

2. Common Standards & Steel Grades

We supply pipes strictly adhering to international standards, ensuring full traceability with Material Test Certificates (MTC) according to EN 10204 3.1/3.2.

Material Category	Standard	Common Grades
Carbon Steel	ASTM A192 / ASME SA192	Low Carbon High-Pressure
	ASTM A179 / ASME SA179	Low Carbon (Heat Exchangers)
	ASTM A106 / ASME SA106	Grade B, Grade C
	ASTM A210 / ASME SA210	Grade A1, Grade C
Alloy Steel	ASTM A213 / ASME SA213	T11, T12, T22, T91, T92
	ASTM A335 / ASME SA335	P11, P22, P91, P92

3. Key Applications

Designed for the most demanding thermal environments, our SMLS boiler pipes are regularly used in:

Power Generation:Superheaters, reheaters, and main steam pipelines.

Petrochemical:Heat exchangers, condensers, and furnace tubes.

Industrial Boilers:Economizers, water wall panels, and headers.

Oil & Gas:High-pressure steam injection and refinery processing lines.

4. Packing & Export Protection

To ensure the integrity of the material during maritime transit, we utilize professional export-standard packaging:

Surface Treatment:Black painting, anti-rust oil, or varnish coating to prevent corrosion.

End Protection:Plastic pipe caps on both ends to protect threads and internal surfaces.

Bundling:Hexagonal bundles secured with strong steel strips.

Container Loading:Handled with nylon slings to avoid surface scratches; internal bracing and sea freight-ready wooden crates for thin-walled tubes (ASTM A179/A192).

Seamless Boiler Tube Size Range and Wall Thickness Reference

Nominal

Outside

Wall Thickness (mm)

diameter (A)

diameter (B)

diameter (mm)

2.8

3.5

•

38.1

•

1 1/2

48.6

•

60.5

•

2 1/2

76.3

•

89.1

•

100

114.3

•

100

-120

•

125

139.8

•

150

165.2

•

150

168.3

•

193.7

•

200

219.1

•

250

273

•

300

323.9

•

350

355.6

•

400

406.4

•

450

457.2

•

500

508

•

550

558.8

•

600

609.6

•

Table 1 ASTM A213 Steel Tubes Outside Diameter and Wall Thickness Tolerance

Item	Range (OD, mm)	Tolerance
OD Tolerance	< 25.4	+/- 0.10
	25.4 - <= 38.1	+/- 0.15
	> 38.1 - < 50.8	+/- 0.20
	50.8 - < 63.5	+/- 0.25
	63.5 - < 76.2	+/- 0.30
	76.2 - <= 101.6	+/- 0.38
	> 101.6 - <= 190.5	+0.38 / -0.64
	> 190.5 - <= 228.6	+0.38 / -1.14
WT Tolerance	<= 38.1	+20% / -0
WT Tolerance	> 38.1	+22% / -0

Table 2 ASTM A213 Alloy Steel Tube Chemical Composition (%, max)

Steel Grade	ASTM A213 Alloy Steel Tube Chemical Composition (%, max)
Steel Grade	C	Si	Mn	P, S (Max)	Cr	Mo
T2	0.10~0.20	0.10~0.30	0.30~0.61	0.025	0.50~0.81	0.44~0.65
T11	0.05~0.15	0.50~1.00	0.30~0.60	0.025	1.00~1.50	0.44~0.65
T12	0.05~0.15	Max 0.5	0.30~0.61	0.025	0.80~1.25	0.44~0.65
T22	0.05~0.15	Max 0.5	0.30~0.60	0.025	1.90~2.60	0.87~1.13
T91	0.07~0.14	0.20~0.50	0.30~0.60	0.02	8.0~9.5	0.85~1.05
T92	0.07~0.13	Max 0.5	0.30~0.60	0.02	8.5~9.5	0.30~0.60

Table 3 ASTM A213 Alloy Steel Tube Mechanical Properties

Steel Grade	ASTM A213 Alloy Steel Tube Mechanical Properties
Steel Grade	T. S (MPa)	Y. P (MPa)	Elongation	Hardness (HBW/HRB)
T2	≥ 415	≥ 205	≥ 30%	163HBW (85HRB)
T11	≥ 415	≥ 205	≥ 30%	163HBW (85HRB)
T12	≥ 415	≥ 220	≥ 30%	163HBW (85HRB)
T22	≥ 415	≥ 205	≥ 30%	163HBW (85HRB)
T91	≥ 585	≥ 415	≥ 20%	250HBW (25HRB)
T92	≥ 620	≥ 440	≥ 20%	250HBW (25HRB)

Boiler Seamless Pipe Standards

Application	Common Standard	Material Type
High-Pressure Boiler Tubes	ASTM A192	Carbon Steel
Heat Exchanger Tubes	ASTM A179	Low-Carbon Steel
High-Temp Steam Pipe	ASTM A106	Carbon Steel
Superheater/Reheater Tubes	ASTM A213	Alloy Steel (T-Grades)
Main Steam Line Piping	ASTM A335	Alloy Steel (P-Grades)

Boiler Pipe Production Process

Frequently Asked Questions

1. Which specific standards and grades do you provide for boiler applications?

We supply high-quality boiler pipes according to international standards such as ASTM A192, ASTM A210, and EN 10216, ensuring the pipes can withstand the extreme heat and pressure of industrial boiler systems.

2. How do you ensure the pipes can handle high-pressure and high-temperature environments?

Every boiler pipe undergoes rigorous Internal Quality Control, including Hydrostatic testing and mechanical property verification, to guarantee safety and stability under intense thermal stress.

3. Do you provide official certification for heat-resistant materials?

Yes, all shipments are accompanied by a Mill Test Certificate (MTC) per EN 10204 3.1, detailing the chemical composition and mechanical results to ensure the material meets your project's technical specifications.

4. How are the pipes protected from corrosion and damage during shipping?

We use sea-worthy packaging, including anti-rust oil or varnish coating and plastic pipe-end protectors, to ensure the pipes remain in pristine condition during long-distance ocean transit.