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Duplex Steel S32205 Muti-core Tubing Santoprene TPV Encapsulated
Specification
Item | Details |
Product Type | Muti Core Tubing |
Material Grade | S31803/2205 (316/316L/ 316Ti, 304/304L, S332750/2507, alloy 825, alloy 625 available) |
Encapsulation Material | Santoprene TPV (FEP, PVDF, Rilsan PA 11available) |
Outer Diameter | 3.18-38.1mm (1/8"-11/2") |
Wall Thickness | 0.4–2.54 mm (0.016–0.1") |
Length | <15000 m (<50,000 ft) |
Standards | ASTM A789 |
Manufacturing Process | 100% Laser Welding, Cold Drawing, Bright Annealing |
Pressure Test | Conventional 5000 PSI / Max. 15000 PSI |
Inspection | Appearance, PMI, Size, Air tight, ET, Hydraulic Test |
Certificates | ISO |
Packaging | Plastic Reel, Wooden Reel, Solid Wooden Reel, Iron Reel, Wooden Box |
Optional Service | Encapsulation, Customized Length, Third-party Inspection |
Company & Factory Introduction
MTSCO is a professional factory complex in the industrial piping sector, operating four major product divisions. In 2024, MTSCO established its own production base—Siri Tubing—specializing in the manufacturing of welded coiled tubing, control line flatpack, encapsulated control line, multi-core tubing, and cables. The factory strictly follows international ASTM standards and can supply various materials including 304, 316, 2205, 2507, Alloy 625, and Alloy 825. Siri Tubing has obtained ISO certification and has long-term partnerships with international energy companies such as OXY, KOC, and ADNOC. We are not just selling products, we are also your reliable supply chain partner.
Product Advantages
·Ultra-long continuo us production: Multi core tubing can reach a maximum length of 50,000 feet (approximately 15 km) per coil, reducing field splices and improving system reliability.
·High-pressure bearing capacity: Multi core tubing has a standard hydraulic test pressure of 5,000 PSI and can withstand a maximum test pressure of 15,000 PSI, meeting the requirements of the vast majority of high-pressure applications.
·Diversified encapsulation materials: Provides multiple plastic encapsulation options including FEP, PVDF, Rilsan PA 11, and Santoprene TPV, meeting different working condition requirements.
·ISO certification guarantee: Siri Tubing has obtained ISO 9001 quality management system certification, ensuring stable and controllable product quality.
·Fast delivery capability: Regular specifications are kept in stock year-round, enabling rapid response to urgent customer needs and ensuring on-time delivery.

Laser Welding Process
Laser welding is a key process that determines the quality of multi core tubing. MTSCO adopts 100% laser welding process, using high-energy-density laser beams to precisely melt the formed tube. The welded seam has narrow width and small heat-affected zone, effectively avoiding oxidation and embrittlement. Laser welding ensures beautiful weld formation and strong dimensional consistency. During production, laser welding parameters are adjusted in real-time by an automatic control system to ensure stable and reliable quality of every weld seam.
Santoprene TPV Encapsulation
Santoprene TPV (thermoplastic elastomer) combines the soft feel of rubber with the processability of plastic, offering excellent weather resistance, ozone resistance, and chemical resistance. With outstanding sealing performance and a comfortable tactile feel, it is commonly used in automotive seals, medical devices, and consumer goods. TPV is recyclable, aligning with environmental sustainability trends. MTSCO offers Santoprene TPV encapsulated solutions to meet customers’ comprehensive needs for elasticity, durability, and aesthetic appeal.
Hydraulic / Air tight testing
Hydraulic and air tight test are necessary procedures to verify the pressure sealing performance of multi core tubing. MTSCO conducts pressure testing on all welded coiled tubing, with a standard test pressure of 5,000 PSI and a maximum withstand test pressure of 15,000 PSI. Hydraulic test detects deformation and leakage of the tube body and weld seam under high pressure by injecting pressurized water into the tube; air tight test is used for scenarios with higher sealing requirements and can quickly detect micro-leakage. Both testing methods can be flexibly selected according to customer requirements to ensure products meet the pressure requirements of different working conditions. After testing is complete, all data records and samples are retained and archived.
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Siri Laboratory Introduction
Siri Laboratory is equipped with tensile testing machines, impact testing machines, metallographic microscopes, hardness testers, and other equipment, capable of conducting various mechanical property tests including tensile testing, flaring testing, flattening testing, bending testing, and hardness testing. At the same time, the laboratory conducts professional testing such as chemical composition analysis, intergranular corrosion testing, and metallographic analysis. The laboratory's comprehensive testing system provides reliable quality assurance for Siri Tubing products.
FAQ
Q1: What quality certifications does the product have?
A1: Siri Tubing has obtained ISO 9001 quality management system certification. All raw materials come from renowned steel mills; the production process is fully traceable; finished products undergo 100% eddy current inspection before shipment.
Q2: Can non-standard size customization be produced?
A2: Yes. We support customization of outer diameter, wall thickness, length, and encapsulation material according to customer requirements. The outer diameter range covers 3.18 mm to 38.1 mm, with wall thickness from 0.4 mm to 2.54 mm.
Q3: What typical working conditions are the products suitable for?
A3: Suitable for high-pressure, high-temperature, and corrosive environments, such as oil & gas downhole systems, subsea applications, geothermal projects, and chemical processing systems, where reliable control, monitoring, and fluid transmission are required.