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 B111 C70600 (H55) Seamless Tube
ASTM B111 C70600 (H55) seamless tube, size 35×1.0×1150 mm. CuNi 90/10 alloy with excellent seawater corrosion resistance, 100% Eddy Current Tested, third-party certified for heat exchangers and condensers.
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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.
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ASTM A789 S32750 Super Duplex Seamless
ASTM A789 S32750 super duplex seamless tube, 19×2.4mm, bright annealed finish – high strength, superior corrosion resistance.
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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.
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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an Engineer, Procurement Specialist, or Manufacturer?
Special for Broker
If you have connections with professionals in the heat exchanger, boiler, or industrial manufacturing industries.
We invite you to become a valuable partner with DLSS.
Company News
How to Accurately Measure Pipe Wall
In the manufacturing and inspection of metal pipes—whether stainless steel, carbon steel, or alloy—the wall thickness is a key dimensional parameter. Precise wall thickness affects mechanical strength, pressure resistance, and long-term reliability, especially in critical applications such as heat exchangers, boilers, and petrochemical piping systems. One of the most accurate methods for determining wall thickness […]
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How DLSS Performs 100% Eddy Current
Introduction In critical industries like heat exchangers, petrochemicals, boilers, and nuclear power, the demand for defect-free stainless steel tubing is non-negotiable. One of the most reliable non-destructive testing (NDT) methods to ensure tube integrity is Eddy Current Testing (ET). At DLSS, we perform 100% ET on all seamless stainless steel tubes to detect surface and […]
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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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Zero-Defect Delivery for High-Performance Alloy Pipes:
For EPC contractors and end users, high-performance alloy pipes are not ordinary commodities. Materials such as titanium, Alloy 625, Alloy 825, Hastelloy C-276, Monel 400, duplex stainless steel, and super duplex stainless steel are often used in desalination, LNG, chemical processing, power plants, refineries, offshore platforms, and heat exchanger systems. In these applications, one wrong […]
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