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 B111 C70600 (O61) Seamless Tube
ASTM B111 C70600 (O61) seamless copper-nickel tubes, size 16×1.0×3000 mm, 100% Eddy Current Tested. Ideal for condensers, heat exchangers, and seawater cooling systems.
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ASTM B466 C70600 (O60) Seamless Pipe
ASTM B466 C70600 (O60) seamless copper-nickel pipe, size 88.9×5.49×3000 mm. CuNi 90/10 alloy with excellent seawater corrosion resistance for onshore and offshore piping, desalination, and marine applications.
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ASTM B111 C44300 (O61) Seamless Tube
ASTM B111 C44300 (O61) Admiralty Brass seamless tube, size 20×2.0×6000 mm. Cold finished boiler tube with excellent seawater resistance and thermal conductivity for boilers, condensers, and heat exchangers.
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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.
Read MoreDifferentiated Services: Precisely Meeting Your Business Needs
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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
Electropolished vs Mechanically Polished Tubes: What’s
Introduction In sanitary applications, cleanability is critical. Whether you’re building a milk pasteurizer in Brazil or a pharmaceutical system in Colombia, the inner surface of your stainless steel tubes directly affects hygiene, bacterial resistance, and compliance. The two most common surface finishes used in sanitary stainless steel tubing are: But how do they compare? And […]
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Super Duplex Seamless Tubes (SA789 S32205)
Introduction Heat exchangers operating in corrosive and high-pressure environments require tube materials with superior mechanical properties and corrosion resistance. One typical customer requirement highlights the importance of super duplex seamless tubes (SA789 S32205) in long-length applications. With outside diameters of 25.4 mm, thin wall thickness, and lengths exceeding 18 meters, these tubes represent a challenging […]
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Stainless Steel Seamless Pipe for NACE
Meta Description:Explore how stainless steel seamless pipes tested to NACE MR0175 / ISO 15156 and MR0103 standards ensure safety in sour service environments. Learn about SSC, HIC, and corrosion resistance. Introduction Sour service environments—such as oil and gas fields containing hydrogen sulfide (H₂S)—pose serious challenges to piping materials. Without the proper metallurgy and testing, stainless […]
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Common Heat Exchanger Tube Failures and
Introduction Heat exchanger tube failures can lead to: Understanding the most frequent failure mechanisms is key to designing, selecting, and maintaining reliable heat exchanger systems. In this article, we explore the five most common tube failure types—and how to avoid them. 1. Pitting Corrosion Occurs when localized corrosion breaks through the passive layer of stainless […]
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