Stainless Steel 321/347 Durable Construction Seamless Coiled Tubing Up To 120kgs/coil
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Stainless Steel 321/347 Durable Construction Seamless Coiled Tubing Up To 120kgs/coil

MTSCO specializes in the production and supply of coiled tubing, hydraulic control tubing, hydraulic control lines, tubing encapsulated cables, chemical injection lines, and multi-core tube bundles. The products are widely used in petroleum, chemical, natural gas, shipbuilding, food, environmental protection, and other industries, especially from standard well-workover and velocity/production strings for logging, drilling, and special application strings with factory-installed wire-line, capillary tubes to integral tools. Our continuous coiled tubing in lengths is suitable for the most challenging downhole environments.
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Stainless Steel 321/347 Durable Construction Seamless Coiled Tubing Up To 120kgs/coil

coiled tubing (157) coiled tubing (143)


Seamless Coiled Tubing:

Material: Alloy 825/N08825, TP316/L, TP304/L, S32205, S32750,  Alloy 400/ N04400, Alloy 625/ N06625

Type: Seamless
Hole count: Single/Multi Core
Outer Diameter: 6.35mm-25.4mm
Wall Thickness: 0.89mm-3mm
Length : According to customers’ needs, up to 120kgs/coil
Standard: ASTM A213/A269/A789/B704/B163,etc.
Certificate: ISO/CCS/DNV/BV/ABS, etc.
Inspection: NDT; Hydrostatic test

Package: Wooden or iron reel


Chemical Composition:

Material Chemical Composition % Max
C Mn P S Si Cr Ni Mo N B Nb Ti
TP304 0.08 2 0.045 0.03 1 18.0-20.0 8.0-11.0 - - - -
TP304L 0.035 2 0.045 0.03 1 18.0-20.0 8.0-12.0 - - - -
TP316 0.08 2 0.045 0.03 1 16.0-18.0 10.0-14.0 2.00-3.00 - - -
TP316L 0.035 2 0.045 0.03 1 16.0-18.0 10.0-15.0 2.00-3.00 - - -
TP321 0.08 2 0.045 0.03 1 17.0-19.0 9.0-12.0 - - - 5C -0.70
TP347 0.08 2 0.045 0.03 1 17.0-19.0 9.0-12.0 - - 10C -1.10 -


Physical Property:

Steel grade Physical Property
Y.S T.S EL. HRB
304 ≥205 ≥515-1035 ≥40 ≤92
304L ≥205 ≥520 ≥40 ≤90
316 ≥620 ≥310 ≥30 ≤95
316L ≥480 ≥177 ≥40 ≤90
321 ≥205 ≥515 ≥40 ≤95
347 ≥205 ≥515 ≥40 ≤92


Advantages of Coiled tubing:

Coiled tubing presents various advantages that revolutionize the conventional approach to oil pipe installation. Traditionally, the labor-intensive process of welding long rods of oil pipe end-to-end or to fittings proved slow and costly. Coiled tubing, however, offers a more efficient and cost-effective alternative, minimizing both time and labor expenses while ensuring a safer and maintenance-free installation.


The benefits of coiled tubing are as follows:
Improved corrosion resistance: Coiled tubing stands out for its superior corrosion resistance, thanks to the properties of stainless steel, duplex, and nickel alloys.
Increased reliability: Utilizing fewer mechanical fittings or welding in the coiled tubing process diminishes the likelihood of defects, such as leaks and other potential long-term failures, thereby enhancing overall reliability.

Reduced installation labor costs: Installing continuous lengths of pipe with coiled tubing proves more time-efficient and reliable compared to connecting multiple shorter lengths of pipe. This not only streamlines the installation process but also contributes to cost savings in labor.


MTSCO specializes in the production and supply of coiled tubing, hydraulic control tubing, hydraulic control lines, tubing encapsulated cables, chemical injection lines, and multi-core tube bundles. The products are widely used in petroleum, chemical, natural gas, shipbuilding, food, environmental protection, and other industries, especially from standard well-workover and velocity/production strings for logging, drilling, and special application strings with factory-installed wire-line, capillary tubes to integral tools. Our continuous coiled tubing in lengths is suitable for the most challenging downhole environments.

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