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
ASME SA182 F317L Forged Flange for
ASME SA182 F317L Forged Flange WNRF 2" SCH40 CL150High-quality forged weld neck raised face flanges made of corrosion-resistant F317L stainless steel. Designed for chemical plant piping systems, these 2" SCH40 CL150 flanges ensure durability, precise fit-up, and reliable performance under demanding conditions.
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ASTM A/ASME SA182 F60 (S32205) Forged
ASTM A/ASME SA182 F60 (S32205) duplex forged flange WNFF DN50, 10 mm thick, to AS2129 Table E. Exported to Australia for offshore, marine, and chemical applications. High strength, excellent chloride resistance.
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ASTM B151 C70600 Weld Neck Flange
ASTM B151 C70600 Weld Neck Flange (WNRF), 4″ SCH80, 150#, ASME B16.5. CuNi 90/10 alloy with excellent seawater corrosion resistance, ideal for marine, desalination, and offshore piping systems.
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ASTM A182 F321 Forged Flange Ring
ASTM A182 F321 forged flange ring for heat exchanger plants. Titanium-stabilized stainless steel with excellent high-temperature and corrosion resistance for boilers, petrochemical, and power applications.
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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If you have connections with professionals in the heat exchanger, boiler, or industrial manufacturing industries.
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Company News
Beware of Fraudulent Companies Among Steel
In recent months, several cases have surfaced regarding fraudulent activities among certain steel and metal material suppliers in China. One particular case highlights the risks faced by overseas buyers when dealing with unreliable companies. Case Study: Brazilian Importer Defrauded In April and May 2025, a Brazilian company reported that it had purchased approximately 125 tonnes […]
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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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Different Types of Finned Tubes and
Finned tubes come in a variety of designs, each engineered to meet specific heat transfer and operating conditions. Choosing the right type of finned tube is essential for achieving optimal heat exchanger efficiency and long-term durability. If you are new to the concept, you can first read our article What is a Finned Tube and […]
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Geothermal Heat Exchangers: How They Work
As global interest in renewable energy grows, geothermal systems are increasingly being adopted for heating, cooling, and even power generation. At the heart of these systems are geothermal heat exchangers, responsible for transferring thermal energy between the ground and the working fluid. This article explains how geothermal heat exchangers work, compares types, discusses key challenges […]
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