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 B165 Monel 400 (UNS N04400)
ASTM B165 Monel 400 (UNS N04400) seamless pipe, size 273×9.27×5200 mm. Bright surface, 100% Hydrostatic, Eddy Current, and Ultrasonic tested. Ideal for heat exchangers, marine, oil & gas, and chemical applications.
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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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ASTM A403 WP321 SMLS 180° SR
ASTM A403 WP321 seamless 180° SR elbow, 88.9×3.05 mm minimum thickness. Titanium stabilized stainless steel bend with high-temperature and corrosion resistance for heat exchangers, boilers, and refineries.
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ASTM A790 S32205 Seamless Pipe DN50
ASTM A790 S32205 seamless pipe, DN50 SCH10S, 1030 mm length, pickled & annealed, 100% heat treated. Duplex stainless steel with high strength and excellent resistance to seawater and chlorides.
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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Company News
Material Selection for Seawater-Cooled Heat Exchangers:
Seawater is one of the most aggressive environments for heat exchanger systems. High levels of chlorides, biofouling, and oxygenated saline water create ideal conditions for pitting, crevice corrosion, and stress corrosion cracking (SCC). Choosing the wrong material for tubes in seawater-cooled heat exchangers can lead to early failure, frequent maintenance, and high replacement costs. In […]
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How to Choose Stainless Steel Pipe
Introduction Heat exchangers are the heart of many industrial systems—refineries, petrochemicals, power plants, and HVAC units. And at the core of any heat exchanger is a network of tubes or pipes that must perform under thermal, chemical, and mechanical stress. But not all stainless steel pipes are created equal. Selecting the wrong grade or finish […]
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Finned Tube Material Selection Guide for
Selecting the right finned tube material is critical to achieving optimal performance, durability, and cost-effectiveness in heat exchanger systems. Different industries face different environmental and operational challenges, so your material choice should align with your application’s specific needs. If you are new to finned tube technology, start with Different Types of Finned Tubes and Their […]
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In‑Depth Guide to Finned Tubes: Why
Overview & Industry Outlook Finned tubes are rapidly gaining attention in 2025 due to their unmatched ability to enhance thermal transfer efficiency in compact spaces. According to MarketWatch, the finned tube heat exchanger market is projected to reach USD 20+ billion globally, driven by the expanding needs of HVAC systems, power generation, petrochemicals, and industrial […]
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