Product description:

The seamless pipe of heat exchanger is a type of steel pipe formed by punching through round steel, with no welds on the surface. According to the production method, seamless steel pipes are divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, and hot-expanded seamless steel pipes. Seamless steel pipes are classified into two types based on their cross-sectional shape: circular and special-shaped.

ASME A355 Heat exchanger seamless pipe is a high-grade alloy steel tube specifically designed for heat exchangers, superheaters, reheaters, and boilers operating in high-pressure and high-temperature environments. Manufactured in accordance with ASME SA355 / ASTM A355, this pipe provides superior mechanical strength, thermal stability, and corrosion resistance, ensuring safe and efficient heat transfer performance in the power generation, petrochemical, and refining industries.

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Product Overview

ASME A355 Seamless Heat Exchanger Pipes are made from ferritic alloy steels that contain chromium and molybdenum as strengthening and corrosion-resistant elements. They are designed to withstand high internal pressures and fluctuating temperatures while maintaining excellent dimensional stability and low deformation rates.

The combination of high tensile strength, oxidation resistance, and superior thermal conductivity makes A355 seamless pipes ideal for power plants, refineries, and chemical processing plants, where both efficiency and safety are vital.

Manufacturing Process

To meet the stringent requirements of ASME and ASTM standards, A355 Heat Exchanger Seamless Pipes are produced through advanced metallurgical and finishing techniques:

Raw Material Selection: Alloy steel billets containing Cr and Mo are carefully selected for purity and consistency.

Hot Piercing and Rolling: Billets are pierced and rolled into hollow tubes with precise wall thickness.

Cold Drawing: Further processed for enhanced dimensional accuracy and smooth internal surfaces.

Heat Treatment: Normalizing, tempering, or quenching to refine the microstructure and enhance toughness.

Non-Destructive Testing: Ultrasonic, eddy current, hydrostatic, and dimensional tests ensure integrity.

Surface Finishing: Pickling or shot-blasting for clean, corrosion-resistant surfaces suitable for heat exchange applications.

Each pipe is supplied with full Mill Test Certificates (MTC) according to EN 10204 3.1/3.2, confirming compliance with ASME A355, ASTM A355, and ASME B36.10M standards.

Applications:

The application range of seamless steel pipes is very wide, including structures, fluid transportation, low and medium pressure boilers, high-pressure boilers, fertilizer equipment, petroleum cracking, geological drilling, diamond core drilling, petroleum drilling, ships, automotive half shaft sleeves, diesel engines, etc. Seamless steel pipes will be used to avoid leakage and other problems, ensure the effectiveness of use, and improve material utilization. It can be seen that the application of seamless steel pipes mainly reflects three major fields. One is in the field of construction, which can be used for underground pipeline transportation, including extracting groundwater during construction. The second one is in the field of machining, which can be used for mechanical processing, bearing sleeves, etc. The third field is electrical, including gas pipelines and fluid pipelines for hydroelectric power generation.

ASME A355 Heat exchanger seamless pipes are widely used in industrial systems that demand high-temperature operation and reliability:

Heat exchangers for chemical, refinery, and power generation plants.

Boilers and superheaters in thermal and nuclear power stations.

Reheaters in steam turbine systems.

Condensers for industrial heat recovery systems.

Petrochemical heaters for process units and reactors.

Their strength, toughness, and oxidation resistance make them suitable for both new projects and maintenance replacements in demanding service environments.

Company profile:

Since its establishment in 2014, Wuxi Hengxin Zhicheng Co., Ltd. has rapidly grown into a leading enterprise in the steel manufacturing industry. We focus on the research, production and sales of seamless steel pipes, special-shaped steel pipes and hydraulic cylinders, and are committed to providing customers with high-quality, customizable products that fully meet diverse application needs.

Our products are exported to global markets such as the Middle East, South America, Africa, and Southeast Asia, and are highly trusted by large purchasers and customers in the steel industry. We always prioritize quality, reliability and customer service, and attach great importance to establishing long-term and stable cooperative relationships with customers. We provide each customer with tailor-made solutions.

We continuously promote technological innovation and improve service capabilities and production efficiency. Through an efficient online platform, you can browse our best-selling products at any time and communicate with the sales and support teams in real time to conveniently obtain the information you need. We sincerely invite partners from all countries to visit, exchange and provide guidance, and jointly explore more possible cooperation opportunities!

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Packaging and Transportation:

【Package standard】

We use steel bands to tightly package the products into hexagonal bundles. The structure is stable and not prone to deformation. Each bundle is equipped with two high-strength nylon straps to ensure the safety and convenience of the lifting operation.

To meet various maritime transportation needs, we offer a range of customized packaging options, including full coverage with oilcloth, moisture-proof wooden boxes, and high-strength protective frame packaging, to ensure the maximum safety of goods during transportation.

【Guarantee for transportation】

We offer 20-foot and 40-foot standard container transportation services. Each container can carry up to 25 tons of goods and we can accept trial orders with a minimum of 5 tons. This allows for flexible adaptation to your purchasing scale. All packaging complies with maritime shipping standards to ensure that the goods are delivered to the destination efficiently and safely.

Why us?

We focus on the research, development, production and sales of seamless steel pipes, special-shaped steel pipes and hydraulic cylinders. We have a complete production chain and an advanced equipment system, including piercing machines, cold drawing machines, hot rolling machines, high-precision flaw detection and testing equipment. The company has passed multiple authoritative certifications such as ISO9001, API, SGS, CCS, DNV, ABS, CE, RoHS, etc., ensuring that each product complies with international standards. We are committed to providing customers with high-quality, customizable solutions to meet diverse application needs.

Relying on our own built processing base and modern workshops, combined with multiple branches and storage centers across the country, we have achieved sufficient inventory and efficient logistics coordination, significantly shortening the delivery cycle and ensuring the rapid delivery of orders.

We have established a complete service and support system. After the order is signed, the professional after-sales team can provide timely and safe on-site guidance and technical support to ensure that customers are at ease throughout the process from procurement to use.

FAQ：

1. Do you support customized design and production?

Sure. We have a professional engineering team that can conduct customized design and production with special sizes, control systems or OEM according to your requirements.

2. How fast can you deliver?

In stock sizes, it takes 3-5 days. For customized sizes, it takes 30-35 days.

3. What payment methods do you support?

We support TT payment. Generally, 30% to 50% of the payment is made in advance, and the remaining amount is paid before shipment.

4. Can you provide material certification (MTC)?

Yes, we will provide MTC to you after production is completed to ensure that the material quality meets the standards.

5. What is the minimum order quantity?

Generally, we accept trial orders. The minimum order quantity is 1-3 tons, which can be determined according to different products.