One-stop solution for oil&gas pipeline

DLSS - Applications - One-stop solution for oil&gas pipeline

Trusted Pipe Supplier for the Oil & Gas Industry Globally Delivered, Quality Assured

Carbon Pipe and Tube

Carbon Pipe&Tube for the Oil & Gas Industry

Built to perform in corrosive and high-pressure oil & gas systems, our carbon steel pipes offer smooth flow, excellent resistance to sour media, and dependable performance in both onshore and offshore applications.

Stainless Steel Pipe & Tube for the Oil & Gas Industry 

Engineered to withstand extreme pressure, temperature, and corrosive media, our stainless steel pipes are ideal for offshore platforms, buried pipelines, and sour service conditions. They comply with API and ASME standards, offering exceptional stress corrosion resistance and long service life in critical oil & gas infrastructure.

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Finned tubes for the Oil & Gas Industry

Tailored for oil & gas thermal systems, our finned tubes support enhanced heat recovery in glycol reboilers, process gas heaters, and crude stabilization units. They are built to withstand H₂S, CO₂, chlorides, and high cycling stress — meeting ASME and API material standards.

Flanges for the Oil & Gas Industry

Our precision-engineered flanges ensure leak-tight connections and pressure integrity in demanding oil & gas applications. Compliant with ASME B16.5, B16.47, and API 6A standards, they are designed to withstand extreme pressures, corrosive media such as H₂S and CO₂, and harsh offshore or cryogenic conditions — providing long-term reliability for pipelines, pressure vessels, and process equipment.

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Oil&Gas Industry Market Research Reports

Regular updates on industry market insights — empowering our clients to capture opportunities and succeed.

Dedicated Support for Seamless Integration

Accurate ordering

Accurately and clearly, we input all order details, including the customer's special requirements, into our internal system to prevent any errors after production is scheduled.

Production Control

Each order is assigned a unique tracking number to ensure meticulous management, with every stage strictly recorded and signed for full traceability. Comprehensive inspections, including HT, ET, UT, RT, and PT, are conducted to guarantee superior performance and quality.

After-sales service

Responsive After-Sales Service, Offering Free Exchange or Replenishment of Your Stainless Steel Tubes to Ensure High-Quality Heat Exchanger Installation and Timely Order Fulfillment.

Technical Support

Technical support is provided promptly via phone, email, and online chat to efficiently address your technical issues and inquiries.

Company News

Nickel Alloy 625 vs 825: Choosing the Right Pipe for Chemical and Offshore Projects

Nickel Alloy 625 vs 825: Choosing the

1. Introduction When it comes to critical piping systems in chemical plants, refineries, and offshore projects, material selection plays a decisive role in long-term reliability. Two of the most widely specified options are Nickel Alloy 625 pipes and Incoloy 825 tubes. Although both are high-performance alloys with excellent corrosion resistance, their properties and cost-performance profiles […]

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What is a Finned Tube and How It Improves Heat Exchanger Efficiency

Finned Tubes for Heat Exchangers: How They

Finned tubes are widely used in heat exchangers, boilers, economizers, air coolers, condensers, evaporators, and heat recovery systems. Their main purpose is simple: increase the heat transfer surface area without greatly increasing the size of the equipment. However, finned tube selection is not only about adding more fins. A good design must balance heat transfer […]

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How to Size a Shell and Tube Heat Exchanger: Key Design Parameters

How to Size a Shell and Tube

1. Introduction – Shell and Tube Heat Exchanger Sizing Proper shell and tube heat exchanger sizing ensures optimal performance, energy efficiency, and long service life. Incorrect sizing can lead to excessive pressure drops, fouling, or insufficient heat transfer. This guide outlines the key design parameters to consider when sizing a shell and tube heat exchanger, […]

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Different Types of Finned Tubes and Their Applications in Heat Exchangers

Different Types of Finned Tubes and Their

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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