UNS 32750 Super Duplex Steel Muti Core Tubing 1/4" Corrosion Resistance

UNS 32750 Super Duplex Steel Muti Core Tubing 1/4" Corrosion Resistance

Specification

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.

Manufacturing Process Flow

The production of multi core tubing begins with steel strip. First, incoming inspection of the raw steel strip is conducted to confirm the material is correct; then strip butt welding is performed. The welded strip is cleaned first, then formed into a tube shape, and the tube body is formed through laser welding. Next, the product undergoes sizing, cold drawing, and in-line bright annealing processes. The formed welded coiled tubing also requires in-line eddy current testing as well as hydraulic or air tight testing to verify weld integrity and pressure sealing performance. Finally, the product undergoes fine coiling, marking, final inspection, plastic encapsulation, packaging, and warehousing, with shipment arranged according to customer requirements.

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.

S32750 (2507) Super Duplex Stainless Steel

S32750, also known as 2507, is a super duplex stainless steel. This material combines the microstructural characteristics of both austenitic and ferritic steels. It offers high strength and excellent corrosion resistance. Its yield strength can reach over 500 MPa, which is significantly higher than that of ordinary stainless steel. The pitting resistance equivalent number (PREN) of 2507 is ≥40. Its resistance to chloride-induced stress corrosion is particularly outstanding. 2507 performs exceptionally well in chloride-containing environments and offers good weldability and formability.

Quality Control System

·Raw Material Re-inspection: All raw materials come from qualified suppliers such as POSCO, ATI, JISCO and other internationally renowned steel mills. Upon arrival, the QC team performs PMI composition re-inspection to ensure the material meets order requirements.

·Traceable production process: The main production processes include 100% laser welding, cold drawing, and bright annealing. Each production stage is supervised on-site by experienced technicians. The entire production process uses process cards, supporting full-process traceability.

·Pre-shipment full inspection: Siri Tubing has a professional QC team that conducts a series of inspections and tests on finished products, including routine appearance inspection, PMI test, dimension inspection, and more. At the same time, special inspections such as air tight test, hydraulic test, and eddy current testing are conducted.

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 is the maximum length of multi core tubing?

A1: Our multi core tubing can reach a maximum length of 50,000 feet (approximately 15 km) per coil. Ultra-long continuous production reduces the number of field splices.

Q2: What quality certifications does the product have?

A2: 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.

Q3: What packaging methods do you support?

A3: We offer multiple packaging options including plastic reels, wooden reels, solid wooden reels, iron reels, iron-wood combined reels, and wooden boxes. Wooden strips and ropes are used for reinforcement during container loading to ensure products arrive intact in long-distance transportation.

Q4: What typical working conditions are the products suitable for?

A4: 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.