ASTM A179 Heat Exchanger Tubes

ASTM A179 Heat Exchanger Tubes are seamless low-carbon steel tubes designed for heat transfer applications such as heat exchangers, condensers, and boilers. These tubes provide efficient heat transfer, durability, and high resistance to pressure, making them a reliable choice in various industrial sectors.

Key Features of ASTM A179 Heat Exchanger Tubes

• Seamless Construction: Made from low-carbon steel via a cold-drawing process, these tubes offer superior strength and heat conductivity.
• High Heat Transfer Efficiency: Precision wall thickness and a smooth interior ensure optimal heat transfer performance.
• Corrosion Resistance: Can be treated with protective coatings to resist corrosion in harsh environments.
• Mechanical Strength: The seamless construction allows these tubes to withstand high pressures and temperatures in industrial applications.
• Customizable Dimensions: Available in a wide range of sizes and thicknesses to meet specific design requirements.

Applications of ASTM A179 Heat Exchanger Tubes

• Heat Exchangers: Primarily used in heat exchanger systems for efficient heat transfer in power plants, chemical industries, and refineries.
• Condensers: Improve heat exchange between fluids in industrial condenser systems.
• Boilers: Withstand high pressures and temperatures, making them suitable for boilers in power generation and industrial use.
• Petrochemical and Chemical Industries: Widely used in refineries and chemical processing plants for efficient heat transfer.
• Air Coolers: Enhance heat transfer between gases and liquids in air cooler systems.

Advantages of ASTM A179 Heat Exchanger Tubes

• High Heat Transfer Efficiency: Seamless construction and low-carbon steel composition ensure superior heat transfer efficiency, improving system performance.
• Durability and Strength: Can withstand extreme temperatures and pressures, ensuring reliability in industrial applications.
• Corrosion Resistance: Treated with protective coatings to resist corrosion, extending their lifespan in various environments.
• Cost-Effective: Provide a cost-effective solution for high-performance heat exchanger systems.
• Versatility: Used across multiple industries, including power generation, petrochemical, and HVAC systems, thanks to their adaptability and performance.

Mechanical and Chemical Properties

• Tensile Strength: Minimum 325 MPa (47,000 psi).
• Yield Strength: Minimum 180 MPa (26,000 psi).
• Elongation: Minimum elongation of 35% for cold-drawn tubes.
• Chemical Composition: Maximum carbon content of 0.06%, manganese content of 0.27-0.63%.

When we place a specific order for SA 179 tubing, we should include below material specifications:

• Standard and the name of material: ASTM A179 / ASME SA 179 seamless tubes.
• Manufacturing types in cold drawn
• Size including Diameters and minimum wall thickness

Supplementary Technology: Plain or threaded with socket or beveled with plastic caps, hydraulic testing, eddy current, Infrared test.

Applications

• Heat Exchangers: Transfers heat between two fluids without mixing.
• Condensers: Condenses steam or vapor into liquid.
• Boilers: Transfers heat from fuel combustion to water or steam.
• Superheaters: Superheats steam produced in boilers.

Advantages

• High Thermal Conductivity
• Corrosion Resistance
• Mechanical Strength
• Precision Dimensions

Inspection and Testing

• Chemical Analysis
• Mechanical Testing: Tensile, yield strength, and elongation tests.
• Hydrostatic Testing: Verifies pressure-holding capacity.
• Non-Destructive Testing: Detects surface flaws and internal defects.

What is ASTM A179?

ASTM A179 is a standard specification for seamless cold-drawn low-carbon steel tubes used in tubular heat exchangers, condensers, and similar applications.

The ASTM A179 tubes are produced through a cold-drawing process, which helps to improve their dimensional accuracy and surface finish.

Scope of ASTM A179 Heat Exchanger Tubes

1. ASTM A179 /ASME SA179 covers minimum-wall-thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus.
2. ASTM A179 /ASME SA179 covers tubes 1/8 to 3 in. [3.2 to 76.2 mm], inclusive, in outside diameter. Note 1Tubing smaller in outside diameter and having a thinner wall than indicated in this specification is available. Mechanical property requirements do not apply to tubing smaller than 1/8 in. [3.2 mm] in outside diameter or with a wall thickness under 0.015 in. [0.4 mm].
3. The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.

ASTM A179 Heat Exchanger Tubes and its usage

ASTM A179 Heat Exchanger Tubes are widely used in industries such as petroleum, chemical, medical, food, light industry, machinery, instrument, include industrial pipeline and mechanical structure parts, etc.

ASTM A179 Fin Tubes

ASTM A179 U bend tubes

What is ASTM A179 tube material?

ASTM A179 covers minimum-wall thickness, seamless cold-drawn low-carbon steel tubes for tubular, heat exchanger, condensers, and other heat transfer services. seamless ASTM A 179 steel tube is supplied and produced by cold drawning method. Chemical composition contains carbon, manganese, phosphorus, and sulfur.

Features of ASTM A179 Heat Exchanger Tubes

ASTMA179/ASME SA179 standard is applicable for steel pipes together with outside diameter of 1/8in-3in. (32 mm to 76.2 mm). Our rolling technology has reached the international advanced spot. JST is able to manufacture cold drawn seamless steel tubes with uniform wall depth. Their tolerance is relatively smaller standard your own.

When seamless carbon steel pipes are during the last cold drawing procedure, they will enter micro oxidization and non-oxidation heat treatment furnace for thermal treatment (Temperature is 1200℉ (650℃) if not more.). This makes the surface of cold drawn seamless steel tubes match the no oxide scale standards, and guarantees smooth surface and stable performance.

JST adopts professional hardness testing equipment to find out the hardness of seamless carbon steel pipes. The Rockwell hardness value not able to exceed 72 HRB.

Top rated program customers' requirements, we can analyze the cold drawn seamless steel tube advertise its chemical composition meet standards. We choose one from 250 pipes or select one in a furnace to investigate. If the product analysis fails, then choose another two seamless carbon steel pipes. All elements of two steel pipes tend to be in accordance with standards, and then these pipes can be delivered.

Note:

• Mill test certificates will be issued according to EN10204.3
• All tubes shall be supplied as per applicable ASTM Specification.
• The tubes Shall be Seamless and the testing shall be as per A 450 / A450M.

Size Specifications of ASTM A179 Heat Exchanger Tubes

Chemical Components (%) of ASTM A179 Heat Exchanger Tubes

Mechanical Properties of ASTM A179 Heat Exchanger Tubes

A450/A450M

ASTM A450 covers carbon and low alloy steel tube. Steel samples shall be melt processed and shall either be ingot cast or strand cast. Heat and product analyses shall be performed on the steel materials. Steel specimens shall also undergo tensile tests and shall conform to required values of yield strength and elongation. Flattening test, reverse flattening test, flaring test, flange test, hardness test, hydrostatic test, air underwater pressure test, and nondestructive tests shall be performed on the steel materials.

Seamless tube processing

With years of expertise, we provide a diverse array of steel tube processing options. From sawing and machining tube blanks to intricate bending and upsetting operations, we actively assist you throughout your projects.

Our capabilities extend to eccentricity reduction and concentricity enhancement through turning and grinding. We excel in creating complex geometries using processes like rotary swaging and axial forming. Additionally, we offer property modifications via partial heat treatment, ensuring tailored solutions for your specific needs.

Variable wall thicknesses

Drilling / stamping / lasering

Peeling / roller burnishing

Cold forming

Cutting

Beveling

Deburring

Thread rolling / threading

Partial hardening

Turning / milling / grinding

Reducing / expanding

Inspection

Chemical composition inspection, mechanical properties test(tensile strength,yield strength, elongation, flaring, flattening, bending, hardness, impact test), surface and dimension test,no-destructive test, hydrostatic test.

PMI

identification of the chemical composition of the metal used to manufacture the fitting. Uses PMI sensors, including X-ray fluorescence or optical emission spectrometry.

Size measurement

Seamless pipes with compound bevels as per ASME B16-25 And ASTM A333

Delivery

Steel pipe delivery status(condition)

Steel pipe delivery status(condition): cold / hard (BK), cold / soft (BKW), after cold stress relief annealing (BKS), annealing (GBK), normalized (NBK).

Condition on delivery of steel pipe

Term	Symbol	Explanation
Cold-finished/hard (cold-finished as-drawn)	BK	No heat treatment after the last cold-forming process. The tubes therefore have only low deformability.
Cold-finished/soft (lightly cold-worked)	BKW	After the last heat treatment there is a light finishing pass (cold drawing) With proper subsequent processing, the tube can be cold-formed (e.g. bent, expanded) within certain limits.
Annealed	GBK	After the final cold-forming process the tubes are annealed in a controlled atmosphere or under vacuum.
Normalized	NBK	The tubes are annealed above the upper transformation point in a controlled atmosphere or under vacuum.

The general cold strip mills, volume should go through continuous annealing (CAPL unit) to eliminate cold hardening and rolling stress, or batch annealing reach the mechanical properties of the corresponding standard specifies. Cold rolled steel surface quality, appearance, dimensional accuracy better than hot-rolled plate, and right-rolled thin product thickness is about 0.18mm, so the majority of users favor.

Cold rolled steel coil substrate products deep processing of high value-added products. Such as electro-galvanized, hot dip galvanized, electro-galvanized fingerprint resistant, painted steel roll damping composite steel, PVC laminating steel plates, etc., so that the excellent quality of these products has a beautiful, high resistance to corrosion, has been widely used.

Cold rolled steel coil finishing after annealing, cut the head, tail, trimming, flattening, smooth, heavy volume, or longitudinal clipboard. Cold-rolled products are widely used in automobile manufacturing, household electrical appliances, instruments, switches, buildings, office furniture and other industries. Steel plate strapping package weight of 3 to 5 tons. Flat sub-volume typically 3 to 10 tons / volume. Coil diameter 6m.

Packing

Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.

Placing steel pipes into containers

There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method to work prevent rusting and Sea transportation security.

• Plastic caps plugged at the two sides of pipe ends
• Should be avoided by the steel strapping and transport damage
• Bundled signs should be uniform and consistent
• The same bundle(batch) of steel pipe should be came from the same furnace.
• The steel pipe has the same furnace number, the same steel grade, the same specifications.

Our packing can meet any needs of the customers.

Alloying Elements

Commonly used alloying elements and their effects are listed in the table given below.