Views: 222 Author: Robert Publish Time: 2025-06-28 Origin: Site
Content Menu
● 1. Eastern Metal (HK) Industrial Co., Ltd. (EMHK)
>> Applications
● 2. Wide Steel (Trademark of EMHK)
● 3. Suzhou Maotian Import and Export Co., Ltd.
● 5. MST Edelstahlrohr GmbH (China Supplier)
● 8. Prysmian Group (China Operations)
● 9. SS Coiled Tubing (Subsidiary of EMHK)
● 10. Other Notable Manufacturers
● Why Choose Chinese Encapsulated Control Line Manufacturers?
● Applications of Encapsulated Control Lines
● Frequently Asked Questions (FAQ)
>> 1. What is an encapsulated control line?
>> 2. What materials are commonly used in encapsulated control lines?
>> 3. How is the encapsulation applied to control lines?
>> 4. Can encapsulated control lines be customized?
>> 5. What quality standards do these manufacturers follow?
Encapsulated control lines are essential components in the oil and gas industry, designed to provide reliable hydraulic control and chemical injection in challenging downhole environments. These lines consist of metal tubing protected by an outer encapsulation layer, which enhances durability, corrosion resistance, and mechanical protection. China, as a manufacturing powerhouse, is home to many leading encapsulated control line manufacturers and suppliers known for their quality, innovation, and service excellence. This article explores the top 10 encapsulated control line manufacturers and suppliers in China, with Eastern Metal (HK) Industrial Co., Ltd. (EMHK) ranked first for its outstanding reputation and product quality.
Eastern Metal (HK) Industrial Co., Ltd., established in 2013, is widely recognized as the premier manufacturer and supplier of encapsulated control lines in China. EMHK specializes in stainless steel capillary tubing, coiled tubing, alloy steel, and nickel alloy materials. They serve major oil and gas companies worldwide, including ADNOC, KNPC, PETRONAS, Shell, and Total.
EMHK offers encapsulated control lines made from high-grade alloys such as Austenitic Steel 304L, 316L, Duplex 2205, Super Duplex 2507, Incoloy 825, and Inconel 625. These materials provide excellent corrosion resistance, mechanical strength, and durability necessary for demanding downhole applications. The company also supplies carbon steel materials and stainless steel plates, ensuring a comprehensive product range for various industrial needs.
EMHK employs advanced manufacturing techniques, including seamless extrusion, welded redrawing, and precise encapsulation using materials like FEP (fluorinated ethylene propylene), nylon, PVC, and Santoprene. This encapsulation protects the tubing from mechanical damage, chemical corrosion, and environmental stress, ensuring optimal performance under extreme conditions such as high pressure and temperature.
Adhering to international standards such as ASTM, API, ISO 9001, and ISO 14001, EMHK ensures rigorous quality control. Their products undergo comprehensive testing, including pressure tests, eddy current inspections, and third-party certifications by renowned agencies such as SGS, BV, and APPLUS+. This commitment to quality guarantees that each batch of encapsulated control lines meets or exceeds industry requirements.
EMHK's encapsulated control lines are widely used in oilfields for hydraulic control, chemical injection, subsea umbilicals, and natural gas systems. Their tubing is designed to withstand pressures exceeding 15,000 psi and temperatures up to 280°C, making them suitable for the most challenging downhole environments. Additionally, the company offers OEM services, providing customized solutions for foreign brands, wholesalers, and producers.
Wide Steel, a trademark under EMHK, is a leading stainless steel and alloy capillary tubing manufacturer with over 20 years of experience. They supply high-quality encapsulated control lines and stainless steel materials globally, maintaining a strong reputation for reliability, precision, and customer service. Wide Steel's products are known for their excellent corrosion resistance and dimensional accuracy, making them a preferred choice for oilfield applications.
Based in Jiangsu Province, Suzhou Maotian specializes in seamless and welded tubes and pipes, including encapsulated control lines made from materials like 316L stainless steel and Duplex 2205. The company emphasizes quick response to customer needs and offers customized solutions tailored to specific project requirements. Their encapsulated control lines are widely used in chemical injection and hydraulic control systems in oil and gas fields.
MEILONG Tube focuses on the production of alloy 825 control line tubing and encapsulated control lines, emphasizing protective encapsulation to prevent damage during installation and operation. Their products are widely used in downhole tubing, subsea umbilicals, and general control systems. MEILONG's encapsulation materials provide excellent resistance to abrasion, corrosion, and chemical exposure, ensuring long service life.
MST Edelstahlrohr offers long-length seamless coils of encapsulated control lines with various encapsulation types such as HDPE, Santoprene, PVC, and PVDF. Their products are designed for increased durability and chemical resistance in subsea and offshore wells. MST's advanced manufacturing capabilities allow them to produce control lines with tight tolerances and consistent quality, meeting the stringent demands of the oil and gas industry.
Wide Steel Group is a prominent manufacturer known for stainless steel and alloy capillary tubing. They supply encapsulated control lines tested to meet or exceed ASTM A269 standards. Their products are accepted by major oilfield service companies like Halliburton and Schlumberger, reflecting the company's commitment to quality and reliability. Wide Steel Group also offers comprehensive OEM services, catering to the specific needs of global clients.
MTubing manufactures encapsulated control lines with a variety of metal tubing options, including 304, 316L, 2205, 2507, 825, and 625 alloys. Their encapsulation materials include FEP (F46) and nylon, which provide excellent heat resistance and corrosion protection up to 280°C. MTubing's products are widely used in oilfield chemical injection, hydraulic control, and subsea applications, offering customized solutions to meet diverse operational demands.
Prysmian Group's China operations provide control lines and flatpacks featuring patented Safety-Strip® encapsulation technology. This innovation allows for easy removal of the encapsulation without damaging the underlying tubing, facilitating faster installation and maintenance. Prysmian offers single and dual pass encapsulation with materials such as polypropylene (PP), Santoprene, nylon, PVDF, and FEP, suitable for complex downhole environments. Their products are widely used in offshore and subsea oilfield projects.
SS Coiled Tubing, a subsidiary of Eastern Metal (HK) Industrial Co., Ltd., specializes in encapsulated tubing designed to protect duplex stainless steel coils from corrosion and mechanical damage. Their encapsulated control lines are used in petroleum, chemical, shipbuilding, and hydraulic systems. SS Coiled Tubing's products are tested by leading inspection agencies, ensuring compliance with international standards and customer specifications.
In addition to the companies listed above, several other Chinese manufacturers provide encapsulated control lines with customization options in size, material, and encapsulation type. These manufacturers focus on delivering quality products for oilfield chemical injection, hydraulic control, and subsea applications. They also emphasize OEM services to accommodate foreign brands, wholesalers, and producers seeking tailored solutions.
China's encapsulated control line manufacturers have gained global recognition due to several key advantages:
- Cost-Effectiveness: Competitive pricing without compromising quality makes Chinese manufacturers attractive partners for OEM services.
- Customization: Manufacturers offer tailored solutions to meet specific project requirements, including tubing dimensions, materials, and encapsulation types.
- Advanced Technology: Many manufacturers invest in modern production equipment and quality control systems to ensure product consistency and reliability.
- Comprehensive Service: From raw material sourcing to final product testing and certification, Chinese suppliers provide end-to-end services.
- Strong Export Experience: Extensive experience exporting to global markets ensures smooth logistics, compliance with international standards, and reliable delivery schedules.
Encapsulated control lines are crucial in various oil and gas operations:
- Hydraulic Control: They transmit hydraulic pressure to downhole valves and tools, enabling precise control of well operations.
- Chemical Injection: Control lines deliver chemicals such as corrosion inhibitors and scale preventers to specific zones within the well.
- Subsea Umbilicals: Encapsulated lines are integrated into subsea umbilicals, providing protection against harsh marine environments.
- Natural Gas Systems: They are used in gas lift and injection systems to enhance production efficiency.
- Offshore and Onshore Wells: Their robust design allows use in both offshore platforms and onshore drilling sites.
The encapsulation layer protects the tubing from mechanical damage, abrasion, and chemical corrosion, significantly extending the service life of control lines in demanding environments.
China's encapsulated control line manufacturers have established themselves as reliable and innovative suppliers to the global oil and gas industry. Eastern Metal (HK) Industrial Co., Ltd. leads the market with its comprehensive product range, advanced manufacturing capabilities, and strict quality control. The use of high-performance materials such as Duplex and Super Duplex stainless steels combined with robust encapsulation technology ensures these control lines perform reliably in the most demanding environments. For foreign brands, wholesalers, and producers seeking OEM services, partnering with these top manufacturers offers assurance of quality, customization, and timely delivery. The Chinese encapsulated control line industry continues to grow, driven by technological advancements and expanding global demand, making it a strategic choice for companies worldwide.
An encapsulated control line is a metal tubing system protected by an outer layer of encapsulation that enhances durability, corrosion resistance, and mechanical protection. It is used primarily for hydraulic control and chemical injection in oilfields.
Common materials include Austenitic Stainless Steel 304L and 316L, Duplex 2205, Super Duplex 2507, Incoloy 825, and Inconel 625. These alloys are selected for their corrosion resistance, strength, and ability to withstand high pressures and temperatures.
Encapsulation is typically applied through extrusion processes using materials such as FEP, nylon, PVC, Santoprene, or polypropylene. This protective layer shields the metal tubing from abrasion, chemical attack, and mechanical damage.
Yes, manufacturers offer customization in tubing diameter, wall thickness, encapsulation material, length, and color coding to meet specific project and operational requirements.
Manufacturers comply with international standards such as ASTM, API, ISO 9001, and ISO 14001. Their products undergo rigorous testing and certification by third-party agencies like SGS, BV, and APPLUS+ to ensure quality and reliability.
