ASTM A179 Seamless Steel Tube for Boilers and Heat Exchangers

Short Description:

Seamless Steel Tubes for Boilers, Superheaters, and Heat Exchangers

Size:
Outside Diameter: 15 – 127 mm
Wall Thickness: 1.5 – 12 mm
Length: 5.8 / 6 / 11.8 / 12 m

Standards & Grades:
ASTM A179, ASME SA-179

Usage:
Steam boilers, heat exchangers, industrial processing, power plants, and high-temperature pressure vessels

Womic Steel Advantage:
High-quality seamless tubes, PED & EN 10204 3.2 certified, no MOQ, fast delivery, reliable material supply, and optional machining services including bending and pre-fabrication.

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ASTM A179 Seamless Steel Tubes – High-Quality Boiler and Heat-Exchanger Tubes by Womic Steel

When it comes to high-pressure steam boilers and heat exchangers, the performance and safety of the tubes are critical. Womic Steel manufactures ASTM A179 Seamless Steel Tubes specifically for boilers, superheaters, and industrial heat-exchangers, designed to withstand high temperatures and pressures. All tubes are produced under strict quality control and certified under PED, with full EN 10204 3.2 material certificates. Our extensive production capacity allows us to offer a wide range of diameters, wall thicknesses, and schedules, with no minimum order quantity required.

Material Grades and International Standards

Selecting the right tube material ensures long-term reliability in demanding boiler applications. ASTM A179 specifies cold-drawn carbon steel tubes suitable for high-pressure and high-temperature service. In addition to ASTM A179, Womic Steel produces tubes conforming to a variety of commonly used international standards to meet different engineering requirements:

ASTM A192 – High-pressure seamless carbon steel boiler tubes for power plants

ASTM A209 / A210 – Alloy and carbon steel tubes for high-temperature service

DIN 17175 – German standard for seamless boiler tubes

EN 10216-2 – European standard for seamless carbon and alloy steel tubes

ASME SA-179 – Boiler and heat-exchanger tubes per ASME code

A213 T5 / T9 / T11 / T22 / T91 – Alloy steel boiler tubes for superheaters and heat exchangers

Specification	Material Grade	Standard	Certification
Seamless Boiler Tube	Carbon Steel	ASTM A179 / ASME SA-179	PED Certified, EN 10204 3.2
High-Pressure Boiler Tube	Carbon Steel	ASTM A192	PED / ISO Compliance
Alloy Boiler Tube	Alloy Steel	ASTM A209 / A210	EN 10204 3.2 Material Certificate
Heat-Exchanger Tube	Carbon / Alloy Steel	DIN 17175 / EN 10216-2 / A213 T5-T91	Womic Steel Quality Certificate

Our tubes are suitable for steam boilers, superheaters, and industrial heat exchangers, and the inclusion of multiple international standards ensures compatibility with global projects.

Dimensions, Tolerances, and Thickness Schedules

Every boiler or heat-exchanger project requires precise tube dimensions. Womic Steel manufactures ASTM A179 Seamless Tubes with strict adherence to dimensional tolerances and a full range of thickness schedules to meet different pressure requirements.

Nominal OD (mm)	OD Tolerance ± (mm)	Wall Thickness Tolerance	Length Tolerance (mm)
< 25.4	±0.10	+20% / 0	+3 / 0
25.4 – 38.1	±0.15	+20% / 0	+3 / 0
38.1 – 50.8	±0.20	+22% / 0	+3 / 0
50.8 – 63.5	±0.25	+22% / 0	+3 / 0
63.5 – 76.2	±0.30	+22% / 0	+3 / 0
≥ 76.2	±0.38	+22% / 0	+3 / 0

Thickness Schedules: 20, 30, STD, 40, 60, 80, 100, 120, 160, XXS

The precise control of outer diameter, wall thickness, and length ensures that tubes fit perfectly in boilers and heat exchangers, reducing installation time and ensuring high operational efficiency.

Chemical Composition and Mechanical Properties

The chemical composition and mechanical properties of boiler tubes are essential for safe operation at high temperatures and pressures. Womic Steel guarantees that all ASTM A179 Tubes meet strict specifications for both carbon steel and alloy steel grades:

Element / Property	Composition / Requirement
Carbon (C)	0.15 – 0.30%
Manganese (Mn)	0.27 – 0.63%
Phosphorus (P)	≤0.035%
Sulfur (S)	≤0.035%
Tensile Strength	415 – 585 MPa
Yield Strength	≥205 MPa
Elongation	≥30%
Hardness (HBW)	121 – 187 HBW
Impact / Notch Toughness	Optional per project

These specifications ensure that ASTM A179 Seamless Tubes can handle high-pressure steam, superheated water, and other industrial applications without compromising structural integrity.

Production Process, Heat Treatment, and Fabrication

High-quality production is essential for tubes that operate under demanding conditions. Womic Steel uses advanced manufacturing techniques:

● Seamless Tube Manufacturing: Hot extrusion followed by cold drawing

● Heat Treatment: Normalizing or annealing to relieve stress

● Surface Finishing: Pickling, polishing, and deburring for smooth surfaces

● Fabrication Services: Bending, U-shape forming, pre-fabrication, and custom machining

This allows customers to receive ready-to-install boiler tubes, heat-exchanger tubes, or pre-fabricated assemblies, saving time and labor costs.

Testing, Inspection, and Certification

Safety and reliability are non-negotiable in boiler and heat-exchanger applications. Every ASTM A179 Tube undergoes rigorous testing:

● Hydrostatic Pressure Test

● Hardness Test (HBW)

● Non-Destructive Testing (NDT)

● Dimensional Verification

Certifications include:

● PED (European Pressure Equipment Directive)

● EN 10204 3.2 Material Certificate

Compliance with ASTM A179 / ASME SA-179, ASTM A192, A209, A210

This ensures that all tubes are safe, reliable, and fully traceable for global projects.

Applications

ASTM A179 Seamless Tubes are widely used in:

● Steam boilers

● Heat exchangers and superheaters

● Industrial processing plants

● Power generation, fossil fuel plants, and electric power plants

The versatility of these tubes makes them suitable for both high-pressure steam and high-temperature industrial applications.

Production Capacity and Supply Advantage

Womic Steel offers flexibility for single-tube orders or large-scale projects. Our secured raw material supply, extensive production capacity, and technical expertise guarantee fast delivery, precise customization, and optional machining services.

Packaging & Transportation: Tubes are bundled with anti-rust coating, wooden crates, or steel straps for safe delivery worldwide.

Keyword Matrix for Sizes, Standards, and Material

1/2″ NB ASTM A179 Seamless Steel Tube, 1″ NB ASTM A179 Boiler Tube, 2″ NB ASTM A179 Seamless Tube, 3″ NB ASTM A179 Boiler Tube, 4″ NB ASTM A179 Seamless Tube, 6″ NB ASTM A179 Boiler Tube, 8″ NB ASTM A179 Seamless Tube, 10″ NB ASTM A179 Boiler Tube, 12″ NB ASTM A179 Seamless Tube – Thickness Schedule 20, 30, STD, 40, 60, 80, 100, 120, 160, XXS – Standards: ASTM A179, ASTM A192, ASTM A209, ASTM A210, DIN 17175, EN 10216-2, A213 T5/T9/T11/T22/T91

Website: www.womicsteel.com

Email: sales@womicsteel.com

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ASTM A179 Seamless Steel Tube