Hydraulic-Controlline
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Hydraulic-Controlline
Manufactured in China with precision engineering for oil & gas, geothermal, and chemical injection applications. Seamless, high-pressure, corrosion-resistant capillary coiled tubing meeting ASTM, NACE, and ISO standards.
Suzhou Meilong Tube Co., Ltd. is a leading manufacturer of high-quality seamless and redrawn, seam-welded and redrawn coiled tubing. Our products are engineered from corrosion-resistant materials including austenitic, duplex, super duplex stainless steel, and nickel alloys such as Inconel 625 and Incoloy 825.
We specialize in hydraulic control lines, chemical injection lines, encapsulated control lines, and geothermal tubing designed for extreme downhole conditions in oil & gas and geothermal energy sectors.
Precise alloy verification using spectrometry and lab testing.
Strict tolerance control on OD, WT, and coil consistency.
100% length inspection for surface and subsurface defects.
Pressure tested beyond 10,000 psi for integrity assurance.
Tensile, yield, elongation, flare, and flattening tests.
Engineered for reliability in extreme environments. All products are annealed, eddy current tested, and hydrostatically validated.
Made from Inconel, Incoloy, Duplex SS, and 316L for maximum resistance in H2S, CO2, and saline environments.
Rated above 10,000 psi with hydrostatic validation for safe downhole operation.
Every meter inspected via eddy current and hydrostatic testing for defect-free performance.
Compliant with NACE MR0175, ISO 15156, ASTM B423/B444, and SGS/BV certifications.
We manufacture control lines from 316L stainless steel, Duplex 2205/2507, Inconel 625, Incoloy 825, and copper-nickel alloys, all meeting ASTM and NACE standards.
Yes, our Inconel 625, Incoloy 825, and 316L products are fully compliant with NACE MR0175/ISO 15156 for sour service environments.
Our standard coils go up to 12,000 meters (39,370 ft) without splices, ensuring continuous deployment in deep wells.
Yes, we offer PVDF, PP, and FEP-jacketed encapsulated control lines with 316L or nickel alloy cores for signal and power transmission in downhole tools.
All tubing undergoes 100% eddy current testing, hydrostatic pressure testing, dimensional checks, and mechanical property verification (tensile, yield, elongation).
For quotes, technical data, or custom specifications, visit our official website to connect with our team.
Visit Official WebsiteSuzhou Meilong Tube Co., Ltd. — Trusted manufacturer of high-performance hydraulic control lines since 2003.
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