Heat Exchanger Steel Pipes (also known as heat exchanger tubes, boiler tubes, or heat transfer steel pipes) are high-precision seamless or welded steel pipes specifically engineered for use in shell-and-tube heat exchangers, condensers, boilers, and air coolers.

Unlike standard structural pipes, heat exchanger tubes must withstand high temperatures, high pressures, and corrosive media while maintaining excellent thermal conductivity. We manufacture these steel pipes in carbon steel, stainless steel, and alloy steel, fully compliant with major international standards including ASTM, ASME, and TEMA.

Types of Heat Exchanger Steel Pipes

We supply heat exchanger pipes categorized by application standards and manufacturing forms to ensure optimal performance in your specific system:

1. By Application & Standard

Boiler & Superheater Tubes (ASTM A192, A210): Designed for high-pressure and high-temperature steam service. Features high creep strength and excellent oxidation resistance, making them ideal for power generation.

Heat Exchanger & Condenser Tubes (ASTM A179, A213): The workhorses of shell-and-tube exchangers. Manufactured with excellent thermal conductivity and dimensional precision to ensure leak-free tube-to-tubesheet connections.

High-Temperature Alloy Steel Pipes (ASTM A335 P11, P22, P91): Engineered for extreme conditions in petrochemical and refining industries. Outstanding resistance to oxidation, hydrogen attack, and creep at elevated temperatures.

2. By Manufacturing Form

Seamless Tubes: The standard choice for critical high-pressure applications. Offers uniform wall thickness and eliminates weld seam risks.

Welded Tubes (ASTM A249, A312): Cost-effective for lower-pressure applications. Provides excellent surface finish and consistent quality.

3. By Fabrication

Straight Tubes: Cut to exact length and beveled, ready for welding or expansion into the tube sheet.

U-Bend Tubes: Precision CNC-bent for removable bundles, allowing for thermal expansion. (Also available as U-Bend Finned Tubes).

Custom Fabrication Components

Beyond straight pipes, we provide value-added components to simplify your assembly process:

U-Bend Tubes: Precision CNC-bent into U-shapes with stress-relieved bends. (Also available as U-Bend Finned Tubes).

Cut-to-Length & Weld Prep: Tubes are precisely cut, deburred, and beveled to ensure secure tube-to-tubesheet connections (expansion or welding).

Tube Bundles: Pre-assembled bundles ready for insertion into the shell.

Quality Assurance & Testing

Material traceability by heat number.

Hydrostatic Testing and Pneumatic Testing.

Non-Destructive Testing (NDT): Eddy Current Testing (ECT) and Ultrasonic Testing (UT).

Third-Party Inspection: SGS, BV, TÜV, Intertek supported.

Usage & Applications

Our heat exchanger steel pipes are widely used in:

1) Natural Gas & Petroleum: Processing, refining, and transportation systems.

2) Water & Sewage: Industrial water treatment and heat recovery.

3) Power Generation: Boiler tubes and superheater tubes.

4) General Pipe Systems: Heavy-duty fluid transfer and pressure containment.

5) HVAC & Refrigeration: Condenser and evaporator tubes.

Beyond supplying standard straight pipes, we provide value-added fabrication services to simplify your heat exchanger manufacturing and on-site assembly. We work directly from your technical drawings to deliver ready-to-install components.

1. Precision U-Bending

Description: We bend straight heat exchanger tubes into precise U-shapes using CNC-controlled tube benders.

Features: Exact bend radii, uniform wall thickness at the bend, and stress-relieved to prevent cracking under thermal expansion.

Options: Available in bare steel pipes or U-Bend Finned Tubes.

2. End Preparation

Description: Tubes are cut to exact lengths and the ends are machined for seamless integration into your tube sheets.

Features: Precision beveling (weld prep) for welding, or smooth ends for mechanical expansion. Deburred inside and out to ensure clear fluid flow.

3. Tube Bundle Assembly

Description: We can pre-assemble the straight tubes or U-bend tubes into bundles based on your layout (30°, 45°, or 90°).

Features: Accurate tube spacing, securely bundled for transport, minimizing your shop-floor assembly time.

4. Flexible Options

Special Lengths: Custom cutting from 1 meter up to 18 meters.

Material Matching: Base tubes and fabricated parts (if requested) are sourced from the same heat number for maximum compatibility.

Surface Treatment: Pickling, passivation, or anti-rust oiling prior to shipment.

Need custom fabrication?

Send us your tube layout drawings, material specifications, and bend radii. Our engineering team will review your requirements and provide a prompt CIF/FOB quotation.

Standards & Compliance

Our heat exchanger steel pipes are manufactured to precise dimensional, material, and mechanical specifications. We strictly follow major international standards to ensure safety, reliability, and performance in high-pressure and high-temperature service.

1. Base Tube Standards (ASTM)

We supply seamless and welded pipes that fully comply with the following ASTM specifications:

ASTM Standard	Description	Common Grades
ASTM A179	Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes	Grade 1010, 1020
ASTM A192	Seamless Carbon Steel Boiler and Superheater Tubes for High-Pressure Service	Grade 1015, 1025
ASTM A210	Seamless Medium-Carbon Steel Boiler and Superheater Tubes	Grade A1, C
ASTM A213	Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes	T11, T22, TP304, TP316L, TP321
ASTM A335	Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service	P11, P22, P91
ASTM A249 / A312	Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes	TP304, TP316L

2. Design & Fabrication Standards

Our manufacturing processes and fabricated components (such as U-bends and tube bundles) comply with global engineering standards:

ASME Section VIII: Rules for Construction of Pressure Vessels.

TEMA (Tubular Exchanger Manufacturers Association): Standards for shell-and-tube heat exchangers, ensuring precise tube-to-tubesheet fits.

HEI (Heat Exchange Institute): Standards for steam surface condensers.

3. Testing & Inspection Standards

Hydrostatic Testing: To ensure pressure integrity (tested up to required code limits).

Non-Destructive Testing (NDT): Eddy Current Testing (ECT) and Ultrasonic Testing (UT) as per ASTM E213 / E309.

Third-Party Inspection: SGS, BV, TÜV, and Intertek are fully supported before shipment.

Material Selection Guide

Choosing the right steel grade is critical for the longevity and safety of your heat exchanger. The material must withstand operating temperatures, pressures, and the corrosiveness of the fluids involved.

Use this guide to select the optimal material for your application:

Material Type	Key Grades / Standards	Best Suited For	Key Advantages
Carbon Steel	ASTM A179, A192, A210	General heat exchange, condensers, low-to-medium pressure boilers.	Excellent thermal conductivity and cost-effectiveness.
Stainless Steel	ASTM A213 (TP304, TP316L, TP321)	Corrosive environments, chemical processing, food & beverage, high-temp superheaters.	Superior corrosion resistance, high strength, and clean surface finish.
Alloy Steel (Cr-Mo)	ASTM A335 (P11, P22, P91), ASTM A213 (T11, T22)	Petrochemical refining, high-temperature and high-pressure steam service.	Outstanding resistance to oxidation, hydrogen attack, and high-temperature creep.
Welded Stainless	ASTM A249, A312	Lower-pressure heat exchangers, condensers, and general fluid transfer.	Cost-effective alternative to seamless tubes with consistent quality.

1. What is the most common size for heat exchanger steel pipes?
In the process industry, the most common outside diameter (OD) is 19.05 mm (3/4"). The wall thickness depends on the operating pressure, which should be determined using a recognized pressure vessel code (such as ASME or TEMA). We can supply pipes in custom ODs (10–500 mm) and wall thicknesses to meet your exact design requirements.

2. What is the difference between your Seamless and Welded pipes?

Seamless pipes: Made from a solid billet without a weld seam. They offer higher pressure resistance and are the standard choice for critical, high-pressure applications.

Welded pipes (e.g., ASTM A249/A312): Made by welding the seam. They are more cost-effective and ideal for lower-pressure applications and general heat transfer systems.

3. Which materials do you offer, and how do I choose?
We supply Carbon Steel, Stainless Steel, and Alloy Steel.

Choose Carbon Steel (A179/A192) for general water/steam systems.

Choose Stainless Steel (TP304/TP316L) for corrosive fluids.

Choose Alloy Steel (P11/P22/P91) for extreme high-temperature/high-pressure petrochemical service.

4. Can you fabricate U-bend tubes or cut-to-length bundles?
Yes. We provide precision CNC U-bending, stress-relief treatment, and exact cut-to-length services. We can also bevel the tube ends (weld prep) to ensure a perfect fit for your tube sheets. All fabrication is done according to your drawings.

5. What standards do your pipes comply with?
Our tubes are manufactured to meet major international standards, including ASTM (A179, A192, A210, A213, A335), ASME Section VIII, and TEMA. We provide Mill Test Certificates (MTC) for full traceability and support third-party inspections (SGS, BV, TÜV, Intertek).

6. What are the packing details and delivery time?

Packing: Wrapped in waterproof paper, bundled securely with steel strips, with two tags on each bundle to ensure safe FCL ocean freight.

Delivery Time: Within 30 days, depending on your order quantity.

Payment Terms: T/T, L/C, O/A, D/P.