others (Sheets, tube sheets, round bars...)
DLSS Save Your Time & Cost
What Makes Our Stainless steel products Stand Out for you?
Every production step is carefully monitored, from raw material sourcing to final inspection, with complete traceability for each batch.
With more than three decades of expertise in stainless steel seamless pipes, DLSS has earned the trust of customers worldwide through consistent quality and reliable service.
Our products are trusted by customers across Europe, Southeast Asia, the Middle East, South America, and beyond, supporting well-known international brands.
DLSS is committed to helping customers succeed. We believe in sincere cooperation, mutual benefit, and long-term partnerships that grow together.
Product Cases
ASTM A213/ASME SA213 TP321 (1.4541) Seamless
ASTM A213/ASME SA213 TP321 (1.4541) seamless tube, 18×1.0×1375MM, bright annealed surface. Titanium-stabilized stainless steel tube for heat exchangers, boilers, and petrochemical plants.
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ASTM B163 Incoloy 825 (UNS N08825)
ASTM B163 Incoloy 825 (UNS N08825) seamless tube, size 25.4×2.11×5555 mm. Bright annealed finish, excellent resistance to acids, seawater, and chlorides. Ideal for heat exchangers, condensers, and chemical processing.
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ASTM A213 TP304 Bright Annealed Seamless
ASTM A213 TP304 seamless bright annealed tube, ∅19×2.0×12000mm, with 100% HT + 100% ET + 100% UT. High-quality stainless steel tube for oil refinery and heat exchanger applications.
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ASTM B151 C70600 Forged Elbow NPT
ASTM B151 C70600 forged elbow, NPT threaded, 3000# rating, ASME B16.11. CuNi 90/10 alloy with excellent seawater corrosion resistance for marine, offshore, and petrochemical piping.
Read MoreDifferentiated Services: Precisely Meeting Your Business Needs
for Stockists
for End Users
for Traders
Fast Delivery
Efficient production and on-time delivery for your orders
Multiple Product Options
A wide range of seamless tubes to meet various project needs
Small Batch Logo Customization
Custom logos for small batch orders, enhancing your brand identity
Regional Pricing & Protection
Exclusive regional rights and strategic pricing to strengthen your market position
Cost-Effective Products
High-quality products at competitive prices to boost your margins
Flexible MOQ
Adaptable minimum order quantities to fit your business requirements
One-Stop Marketing Solutions
Boost your online image with a complete suite of product marketing visuals and videos
Fastest 7-Day Production Process
Delivery can be made within a minimum of 7 days based on your order size
Continuously upgraded packaging
We offer continuously upgraded packaging to ensure maximum protection and efficiency.
DLSS’s Core Principle: Never Leaving Problems For Clients
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Company News
Understanding Pickling and Passivation in Stainless
Introduction Even the highest-grade stainless steel can suffer from surface contamination during tube forming, welding, or heat treatment. To restore the full corrosion resistance of stainless steel tubes, manufacturers must apply pickling and passivation processes—two chemical surface treatments essential to durability and cleanliness. At DLSS, we apply both treatments as part of our tube finishing […]
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Low-Fin vs Corrugated Tubes: Which Is
Low-fin tubes and corrugated tubes are both used to improve heat exchanger performance, but they do it in different ways. Low-fin tubes increase heat transfer mainly by adding more external surface area. Corrugated tubes improve heat transfer mainly by disturbing the flow and creating stronger turbulence inside or around the tube. Neither design is always […]
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5 Reasons Ultrasonic Testing Tube Inspection
Ultrasonic testing tube inspection is a critical non-destructive method used in the stainless steel tube industry to ensure product quality, safety, and compliance with international standards. Especially in industries such as heat exchangers, boilers, power plants, and oil & gas, even the smallest internal defect can lead to costly failures or system breakdowns. This article […]
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Titanium vs Stainless Steel Tubes for
Titanium tubes and stainless steel tubes are both used as heat exchanger tubes in many industrial systems. But they are not used for the same working conditions. Titanium is often used in seawater, high chloride, desalination, and marine systems. Stainless steel is often used in general heat exchangers, boilers, power plants, chemical plants, and cost-sensitive […]
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