One-stop solution for heat exchanger
Customized for Every Heat Exchanger
U-Tubes for Heat Exchanger
High heat transfer efficiency, compact structure, easy maintenance, thermal expansion accommodation, design flexibility, durability, and cost-effectiveness are the advantages of U-tube heat exchangers produced by DLSS.
Pickling tubes for Heat Exchanger
Enhanced corrosion resistance and cost-effectiveness provide our pickling tubes with greater market competitiveness, making them ideal for heat exchanger production with durability and long service life.
Bright tubes for Heat Exchanger
Smooth surfaces reduce fluid adhesion, minimize cleaning, enhance heat transfer, and extend heat exchanger life, making our bright tubes ideal for heat exchanger production.
Finned tubes for Heat Exchanger
High heat transfer efficiency, durability, and corrosion resistance make our fin tubes ideal for heat exchanger applications.
Tube Sheets for Heat Exchanger
Ensures secure tube placement and optimal heat transfer through precision-engineered tube sheets for heat exchangers.
Flanges for Heat Exchanger
Ensures secure connection and pressure sealing through precision-engineered flanges for heat exchangers.
tube bundle for Heat Exchanger
Engineered for precision and performance — our tube bundles ensure secure tube alignment and maximize heat transfer efficiency in every heat exchanger.
High-Performance Stainless Steel Tubes for Heat Exchanger Applications
Product Cases
ASTM A790 S32205 Duplex Stainless Steel
ASTM A790 S32205 Duplex Stainless Steel Seamless Pipe DN20 SCH10S 550 mm, shipped by air to Australia. Excellent strength, corrosion resistance, and on-time delivery for heat exchangers, offshore, and marine projects.
Read More
ASTM B466 C70600 (O60) Seamless Pipe
ASTM B466 C70600 (O60) seamless pipe, size 42.16×4.0×6000 mm, 100% Eddy Current Tested. CuNi 90/10 alloy with excellent seawater corrosion resistance for offshore and marine piping applications.
Read More
ASTM B111 C44300 (O61) Seamless Tube
ASTM B111 C44300 (O61) Admiralty Brass seamless tube, size 19.05×1.65×6100 mm. Excellent seawater and dezincification resistance, high thermal conductivity, SGS/BV/TUV certified. Supplied for Turkey oil refinery heat exchanger and condenser applications.
Read More
Aluminum Brass C68700 ASTM B111 Seamless
Aluminum Brass C68700 ASTM B111 seamless tube, O61 annealed, size 19×1.6×3000 mm. 100% Eddy Current Tested for condenser and heat exchanger applications with excellent seawater corrosion resistance.
Read MoreDLSS Partners
Jn S***h
As a heat exchanger manufacturer, we often face urgent orders from our customers. In one particular project, we had an extremely tight deadline and struggled to find stainless steel tubes that met our specifications. DLSS responded quickly, arranged production in record time, and coordinated the best logistics plan to ensure on-time delivery. Their efficiency and professionalism left a lasting impression on us, and we look forward to a long-term partnership with DLSS!
Mk B***r
Our heat exchanger products operate under high pressure and high temperatures, requiring stainless steel tubes with exceptional precision and corrosion resistance. The materials supplied by DLSS not only met our strict technical requirements but even exceeded our expectations. With their rigorous quality control and reliable management, they helped us maintain product stability and gain the trust of our end customers. DLSS is a partner we can truly rely on!
Aa D***s
One of our heat exchanger designs required stainless steel tubes in non-standard dimensions, which were difficult to source in the market. After discussing our technical requirements, DLSS quickly adapted their production process and delivered tubes that precisely met our specifications. Their flexibility and expertise ensured the smooth launch of our product. DLSS stands out as a top-tier supplier in the industry!
Ty W***n
During one of our production runs, we encountered issues with the weldability of a batch of raw materials, which posed a risk to our final product quality. The technical team at DLSS promptly stepped in, analyzed the problem, and provided professional recommendations. By optimizing material selection and processing techniques, they helped us completely resolve the issue. DLSS is more than just a supplier—they are a valuable technical partner we can depend on.
John D.*
We have been working with DLSS for years, starting with small-volume purchases and gradually expanding to large-scale collaborations. Every time, we experience their professionalism and dedication. Whether it's order adjustments, quality control, or urgent deliveries, DLSS consistently provides the best solutions, helping our business grow steadily. A supplier like DLSS is not just reliable but truly indispensable for long-term success!
From Every Part of The tube...
We care about the quality of stainless steel tubes. That’s why we focus on every detail of every component to ensure durability, precision, and superior performance.
Ensures material accuracy and dimensional precision through chemical composition testing (verified by PMI and spectrometer) and size measurement (including OD, WT, length, and pipe end).
Ensures dimensional accuracy and proper fit through ring gauge testing.
Ensures strength and leak-proof performance under specified pressure conditions through hydrostatic testing.
Ensures detection of surface cracks and defects through Penetrant Testing (PT).
Ensures internal surface quality and detects internal defects through borescope (endoscope) inspection.
Ensures surface quality and detects external defects through external surface inspection.
Dedicated Support for Seamless Integration
Accurate ordering
Accurately and clearly, we input all order details, including the customer's special requirements, into our internal system to prevent any errors after production is scheduled.
Production Control
Each order is assigned a unique tracking number to ensure meticulous management, with every stage strictly recorded and signed for full traceability. Comprehensive inspections, including HT, ET, UT, RT, and PT, are conducted to guarantee superior performance and quality.
After-sales service
Responsive After-Sales Service, Offering Free Exchange or Replenishment of Your Stainless Steel Tubes to Ensure High-Quality Heat Exchanger Installation and Timely Order Fulfillment.
Technical Support
Technical support is provided promptly via phone, email, and online chat to efficiently address your technical issues and inquiries.
In-Depth FAQs: Solving Your Heat Exchanger Tube Problems
What's your Min Order Quantity (MOQ)?
1PC. (Except for the special material and size)
What's your delivery?
5~60 Days. (Depends on products and quantity)
How do you ensure good quality?
Each order production finished we arrange double Inspection and submit all photos and videos for client’s approval. Besides, we accept Third Party Inspection before shipment.
How about your payment term?
T/T or LC at sight. (Deposit is required)
Can you provide FREE sample?
Yes. (If special material or size, let’s discuss in detail)
How long is the warranty period?
Normally three years. (Negotiable)
Company News
Heat Exchanger Tubes: Standards, Materials, and
Heat exchanger tubes are the backbone of many critical industries, including oil & gas, power generation, petrochemicals, shipbuilding, and desalination. Choosing the right tube material and ensuring compliance with international standards are essential to guarantee safety, efficiency, and long-term performance. In this article, we provide a detailed overview of standards, materials, manufacturing processes, and applications […]
Read More
How to Pass PMI, ET, and
Introduction In high-performance industries—such as oil & gas, power generation, and pharmaceuticals—stainless steel tubes must pass rigorous testing to ensure reliability and safety. At DLSS, we implement a robust quality control program including PMI (Positive Material Identification), ET (Eddy Current Testing), and IGC (Intergranular Corrosion Testing). This article explains these testing methods, why they matter, […]
Read More
U-Bend Stainless Steel Tubes: Design, Manufacturing
Introduction U-bend stainless steel tubes are a core component in shell-and-tube heat exchangers, used in power plants, refineries, LNG terminals, and petrochemical plants. Their precise bending, dimensional accuracy, and resistance to thermal fatigue directly impact the longevity and performance of the equipment. This article explores the full lifecycle of U-bend stainless tubes—from design and fabrication […]
Read More
Selecting Stainless Steel Tubes for Seawater,
Why Seawater and Desalination Systems Require Specialized Tubing Seawater contains high concentrations of chlorides, which are extremely aggressive toward most conventional stainless steels. In marine environments or desalination plants, tubes are exposed to continuous flow of saline water, biofouling, crevice conditions, and temperature fluctuations. To ensure long service life and avoid premature failure due to […]
Read MoreWelcome To Send Us An Inquiry,
We Have Prepared A Surprise Gift For You