others (Sheets, tube sheets, round bars...)
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What Makes Our Stainless steel productsStand 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 B622 Hastelloy C22 (UNS N06022)
ASTM B622 Hastelloy C22 (UNS N06022) seamless tube, size 25×2×6000 mm, bright annealed surface. Excellent corrosion resistance in oxidizing and reducing environments, ideal for heat exchangers, chemical processing, and marine applications.
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ASTM A403 WP316L Seamless 90° Elbow
ASTM A403 WP316L seamless 90° elbow, SR, 2″ SCH80S, manufactured to ASME B16.9. Superior corrosion resistance to seawater and acids. Comparison of WP304 vs WP316L included.
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EN10216-5 1.4841 (TP314) Seamless Pipe 60.3×10×4717mm
EN10216-5 1.4841 (TP314) seamless pipe, 60.3×10×4717mm, for heat exchangers and boilers. High-temperature stainless steel with excellent oxidation and carburization resistance.
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ASME SB111 C68700 (O61) Seamless Tube
ASME SB111 C68700 (O61) seamless aluminium brass tube, size 15.88×2.11×1840 mm. Excellent seawater resistance, anti-biofouling, and high thermal conductivity for cooling and heating systems, condensers, and marine equipment.
Read MoreDifferentiated Services: Precisely Meeting Your Business Needs
for Stockists
for End Users
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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
Europe’s Stainless Steel Tube Market: Compliance-Driven
Europe is one of the most regulated and compliance-focused markets in the world for stainless steel seamless tubes—especially for heat exchangers, pharma-grade piping, and energy infrastructure. With stringent requirements for traceability, environmental certification, and dual material standards, suppliers must demonstrate not only high product quality but also full alignment with EU directives. In this blog, […]
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Global Heat Exchanger Tube Standards Explained:
Introduction In the international heat exchanger industry, buyers and engineers frequently encounter various regional and international standards. The most commonly used include: Understanding the similarities and differences between these standards is essential when sourcing or specifying stainless steel seamless tubes, particularly for high-pressure, thermal, or corrosive environments. This article provides a clear comparison to help […]
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ASTM A213/ASME SA213 TP321 (1.4541) seamless
Product Overview: ASTM A213/ASME SA213 TP321 Seamless Tube (1.4541) The ASTM A213/ASME SA213 TP321 (1.4541) seamless tube is a high-performance, austenitic stainless steel tube designed for critical applications in heat exchangers and other high-temperature, high-stress systems. Known for its excellent corrosion resistance, especially against sulfuric and nitric acids, and its ability to withstand oxidation in continuous service […]
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Corrosion-Resistant Heat Exchanger Tubes: When to
In highly corrosive environments—such as seawater cooling, chemical processing, and offshore oil and gas—traditional stainless steel may not offer sufficient durability. Selecting the right material for heat exchanger tubes in these conditions is crucial for ensuring long service life, process safety, and reduced maintenance costs. This article explores two high-performance materials: Titanium and Nickel Alloy […]
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