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High-Performance Control & Chemical Injection Lines

Precision-engineered tubing in 316L, Super Duplex 2507, Incoloy 825, Inconel 625, and Monel 400 for oil & gas, subsea, and geothermal applications.

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About Meilong Tube

Suzhou Meilong Tube Co., Ltd. is a leading developer and manufacturer of high-performance stainless steel and nickel alloy tubes, as well as thermoplastic elastomer encapsulated alloy tubes. Our products serve as critical control and chemical injection lines in the global oil & gas industry.

Meilong Tube Facility

Our Commitment to Excellence

We are single-mindedly devoted to helping our customers exceed their productivity and performance expectations. Through robust partnerships, we develop efficient and innovative solutions tailored to your success.

Our vision is to be the most trusted supplier of high-integrity tubular solutions in the energy sector, delivering unmatched quality, reliability, and technical support.

  • ISO-Certified Manufacturing
  • Global Supply Network
  • Custom Lengths & Encapsulation

Our Products

Precision-engineered control and chemical injection lines for the most demanding environments in oil & gas, geothermal, and subsea applications.

316L Control Line

316L Control Line

High-purity stainless steel tubing ideal for hydraulic control systems in corrosive environments. Excellent weldability and resistance to chloride stress corrosion cracking.

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Super Duplex 2507 Control Line

Super Duplex 2507 Control Line

Exceptional strength and corrosion resistance in high-pressure, high-temperature environments. Ideal for subsea umbilicals and deepwater applications.

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Incoloy 825 Control Line

Incoloy 825 Control Line

Nickel-iron-chromium alloy with excellent resistance to oxidizing and reducing environments, pitting, and crevice corrosion. Suitable for H2S and CO2-rich conditions.

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Inconel 625 Control Line

Inconel 625 Control Line

High-strength nickel-chromium-molybdenum alloy with outstanding resistance to fatigue, creep, and thermal cycling. Perfect for extreme downhole conditions.

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Monel 400 Control Line

Monel 400 Control Line

Nickel-copper alloy with excellent resistance to seawater, hydrofluoric acid, and reducing environments. Commonly used in offshore and marine applications.

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Rilsan PA 11 Encapsulated Line

Rilsan PA 11 Encapsulated Line

Thermoplastic encapsulation provides superior protection against external corrosion and mechanical damage. Ideal for subsea umbilicals and long-term deployment.

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PVDF Encapsulated Chemical Injection Line

Polyvinylidene fluoride (PVDF) encapsulation offers excellent chemical resistance and UV stability. Used in surface and subsea chemical injection systems.

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Santoprene TPV Encapsulated Line

Thermoplastic vulcanizate (TPV) encapsulation combines rubber-like flexibility with thermoplastic processability. Resistant to abrasion and environmental aging.

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FEP Encapsulated Control Line

Fluorinated ethylene propylene (FEP) encapsulation provides outstanding chemical inertness and low friction. Suitable for aggressive chemical environments.

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316L Chemical Injection Line

Optimized for continuous chemical injection in oil and gas wells. Long continuous lengths reduce joints and potential leak points.

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Incoloy 825 Chemical Injection Line

Designed for injection of corrosion inhibitors, scale inhibitors, and methanol in sour service environments. Resists pitting and stress corrosion cracking.

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Control Line Flatpack

Pre-assembled flatpack systems for rapid deployment. Available in 316L, Super Duplex 2507, and Incoloy 825 for hydraulic and chemical injection applications.

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Industries We Serve

Our high-integrity tubular solutions are trusted across critical energy and industrial sectors.

Oil Production in Oilfields

Reliable control and chemical injection lines for onshore and offshore oil production systems, ensuring continuous operation and flow assurance.

Geothermal Power Generation

High-temperature and corrosion-resistant tubing for geothermal well control and chemical treatment systems.

Subsea Umbilicals

Encapsulated control lines integrated into subsea umbilicals for reliable signal and chemical transmission in deepwater environments.

Why Choose Control-Lines.com?

  • Long Continuous Lengths

    Minimize joints and potential leak points with our industry-leading continuous tubing capabilities.

  • Encapsulation Technology

    Rilsan, PVDF, Santoprene, and FEP encapsulation for superior external protection.

  • Global Quality Standards

    Manufactured to meet or exceed API, ISO, and NACE standards.

  • Custom Solutions

    Tailored dimensions, lengths, and encapsulation options to meet your project requirements.

Control Line Manufacturing

Frequently Asked Questions

What materials do you offer for control lines?

We manufacture control lines in 316L stainless steel, Super Duplex 2507 (S32750), Incoloy 825 (N08825), Inconel 625 (N06625), and Monel 400 (N04400).

Do you offer encapsulated tubing?

Yes, we provide encapsulation in Rilsan PA 11, PVDF, Santoprene TPV, and FEP for enhanced protection against external corrosion and mechanical damage.

What are the typical applications for your chemical injection lines?

Our chemical injection lines are used for delivering corrosion inhibitors, scale inhibitors, methanol, and other chemicals in oil & gas production, subsea systems, and geothermal applications.

Can you provide custom lengths?

Yes, we specialize in long continuous lengths to minimize joints. Custom spooling and packaging options are available.

What industries do you serve?

We serve the oil & gas industry (onshore and offshore), geothermal power generation, and subsea umbilical systems worldwide.

Contact Us

For product inquiries, technical support, or custom solutions, visit our official website to get in touch.

Visit Official Website

Suzhou Meilong Tube Co., Ltd.

A808, Building 1 Panhua International Plaza, Zhangjiagang City, Jiangsu Province, China

Phone: +86-185-5113 8787 | +86-512-5832 8328

Fax: +86-512-5832 8217

Email: john.chen@control-lines.com

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