Austenitic
Duplex Steel
Nickel Alloy
Cobalt Alloy

ASTM A789 Tubing, UNS S32750 super duplex steel coil tubing oil and gas

2507 Super Duplex is a high alloy duplex stainless steel with a PRE (pitting resistance equivalent) value of 42.5 minimum. The grade is characterized by very good chloride corrosion resistance, combined with very high mechanical strength. It is particularly suited for use in aggressive environments such as warm chlorinated seawater and acidic chloride-containing media. It is widely used in offshore oil and gas exploration/production and in heat exchangers in petrochemical/chemical processing. The grade is also suitable for hydraulic and instrumentation applications in tropical marine environments.

Specification：

Package: Wooden or iron reel

Our strengths:

First, MTSCO welded coiled tubing can be up to 33,000fts per coil.

Second, the welded coiled tubing can pass the max hydraulic pressure of 100MPA.

Third, the seamless coiled tubing can be up to 120kgs per coil.

Fourth, we can provide various encapsulated plastic material.

Fifth, MTSCO coiled tubing have obtained ISO/PED certificate.  

Quality control:

1. Quality control of raw materials

First, secondary inspection of raw materials.Our raw materials come from large factories such as Baosteel, TSINGSHAN, WALSIN, POSCO，JISCO, ANSTEEL, ATI...Each batch of raw materials requires MTC and PMI. After the raw materials arrive, we conduct PMI and other inspections again to ensure that they meet the requirements.

2. Quality control during production

Second, traceability of the production process.The mainly production process includes welding, cold drawing, bright annealing and plastic wrapping.

Each process is supervised by experienced engineers and technicians. Each link is supervised by professional qc inspectors and photographed for archiving. The entire process uses process cards to ensure accuracy and traceability.

3. Quality control before shipment

Third, 100% inspection before shipment.MTSCO has professional QC team to conduct a series of inspections and experiments on the tubes, including routine appearance, PMI, size, quantity, and other inspections. At the same time, we also conducts mechanical testing, hardness testing, airtightness,UT, ET, HT and other tests. Among them,  welded coiled tubing can pass the max hydraulic pressure of 100MPA.

In addition, we also accept third-party inspection, such as SGS, TUV, and BV.      

Application Areas:

Chemical Processes:Super Duplex Steel 2507 is designed for demanding applications requiring extremely high strength and corrosion resistance for chemical processes, petrochemical and seawater equipment. The alloy is used in salt evaporation processes, heat exchangers and hydrochloric acid environments.

Marine: Ocean transportation spends much of its time at sea, and 2507 offers excellent resistance to seawater hardness. Ships need the corrosion resistance of Super Duplex 2507 to stay on schedule. Marine applications include piping for desalination plants and ship propulsion systems.

Oil & Gas: Super Duplex Stainless Steel 2507 is known for its superior performance, strength and corrosion resistance, making it the perfect choice for offshore oil and gas exploration and production applications.

Power Generation: The mechanical and corrosion properties of Super Duplex Stainless Steel 2507 make it an economical choice for reheater piping in flue gas desulfurization units.

Pulp and Paper: Super Duplex 2507 has excellent resistance to chloride pitting and crevice corrosion for use in chloride-containing bleaching environments and oxygen delignification.

Renewable Energy: Properties such as strength, good ductility and excellent corrosion resistance make 2507 alloy an ideal solution for heat exchangers in geothermal wells and production tubing.