Flange
DLSS Save Your Time & Cost
What Makes Our flanges Stand Out for you?
Our stainless steel flanges perfectly match our piping products, ensuring a one-stop solution.
Self-producing flanges reduces procurement costs, improves supply chain efficiency, and enhances quality control.
Standardized flanges streamline installation, minimize welding, and speed up construction.
Certified by ISO 9001, PED, and AD2000, ensuring compliance with global market standards.
Product Cases
ASTM A312 TP321 Seamless Pipe 114.3×3.20×9200MM
ASTM A312 TP321 seamless pipe, 114.3×3.20×9200MM, 100% HT + 100% ET. Titanium-stabilized stainless steel pipe for heat exchangers, boilers, and petrochemical industries.
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ASTM B729 Alloy 20 (UNS N08020)
ASTM B729 Alloy 20 (UNS N08020) seamless pipe, size 101.6×16.15×2616.2 mm. Heavy wall thickness, bright annealed finish. Excellent sulfuric acid resistance, chloride SCC protection, and high-pressure service.
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Copper Nickel ASTM B111 C70600 (O61)
Copper Nickel ASTM B111 C70600 (O61) seamless low finned tube for oil cooler pipe. CuNi 90/10 alloy with excellent seawater and oil corrosion resistance, ideal for marine, offshore, and industrial cooling 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.
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
DLSS Partners
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Special for Broker
If you have connections with professionals in the heat exchanger, boiler, or industrial manufacturing industries.
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Company News
Corrosion Protection in Underground Piping Systems:
Introduction Underground pipes may be hidden, but the damage they suffer is very real. Whether transporting water, gas, or chemicals, buried pipelines face harsh, invisible threats—especially corrosion from soil moisture, oxygen, stray currents, and chemical contaminants. In this article, we’ll explore how pipeline engineers protect underground piping systems, what causes failures, and what standards and […]
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How to Interpret a Stainless Steel
Introduction A Mill Test Certificate (MTC), also known as a Material Test Report (MTR), is a quality assurance document provided by the manufacturer. It ensures the delivered stainless steel material—such as tubes, pipes, plates, or fittings—complies with the specified standards and purchase order. Understanding how to read an MTC is essential for engineers, QA/QC personnel, […]
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Asia-Pacific Leads the Global Stainless Steel
Asia-Pacific (APAC) is not just the largest stainless steel seamless tube market—it’s the fastest-growing. Fueled by industrialization, infrastructure investment, and regional manufacturing dominance, APAC accounts for over 40% of global market share and is projected to grow steadily at 7.3%+ CAGR through 2030. For manufacturers, EPC contractors, and material buyers, understanding this region’s growth dynamics […]
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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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