Duplex Steel Nickel Alloy Coil Wound Heat Exchanger Tubing 500ft

Duplex Steel Nickel Alloy Coil Wound Heat Exchanger Tubing 500ft

Why Do Global EPC Projects Prefer MTSCO?

MTSCO is a globally recognized brand supplier deeply rooted in the industrial piping sector. In 2024, we officially established our specialized production base — Siri Tubing, dedicated to the R&D and manufacturing of high-strength stainless steel and nickel alloy welded coiled tubing and multi-core tubing.

Through continuous technological innovation and process optimization at Siri Tubing, MTSCO has successfully enhanced production efficiency while ensuring superior product performance, helping customers significantly reduce on-site operational costs. Our high-performance tubing solutions have been successfully applied in extreme environments such as deep-sea drilling and underground oil & gas development.

As an integrator under a factory-cluster model, MTSCO remains committed to delivering customized, cost-effective solutions for global EPC contractors and engineering companies. Trusted by global clients — saving you time and cost.

Single Process Introduction—Bright Annealing

Bright annealing is a critical process that determines the internal cleanliness and corrosion resistance of heat exchanger coils. MTSCO adopts a bright annealing process under hydrogen protection, allowing tubing to eliminate processing stress at temperatures above 1050°C without forming oxide scale. This advanced process ensures a smooth inner surface of the coil, effectively reducing scaling during heat exchange operations while minimizing fluid resistance.

From Mill to Shipment: The 3-Stage Defense for Flawless Coiled Tubing

Secondary Raw Material Inspection: All raw materials are sourced from leading mills such as POSCO and ATI. Before warehousing, mandatory PMI analysis and MTC verification are conducted.

Full-Process Data Traceability: Production is managed through detailed process cards. All key manufacturing steps are recorded and archived by quality inspectors.

Pre-Delivery Testing: All finished coils undergo 100% hydrostatic testing, with a standard test pressure of 5000 PSI and maximum pressure resistance up to 15000 PSI. Products also undergo Eddy Current Testing (ET), and pneumatic testing. Third-party inspections by SGS, TÜV, or BV are available upon request to ensure full quality assurance.

Specification at a Glance

Is Your Project Facing These Extreme Conditions?

In deep-sea oil & gas extraction, high-temperature high-pressure underground wells, and petrochemical heat exchange systems, pipelines operate year-round in highly corrosive environments with strong acids, high chloride content, and extreme mechanical stress.

MTSCO's heat exchanger tubing is specifically engineered for such demanding conditions. By utilizing high-performance materials such as duplex stainless steel and nickel alloys, we effectively solve common challenges faced by traditional pipelines — including leakage at mid-depth subsea connections and stress corrosion cracking in acidic underground environments. Our products are widely applied in key projects of global energy leaders such as OXY, KOC, and ADNOC, significantly extending equipment maintenance cycles.

FAQ

Q1: What is the maximum length of MTSCO's duplex stainless steel coiled tubing?

A1: Siri Tubing produces seam-welded coiled tubing without intermediate butt welds, with a maximum single coil length of up to 10,000 meters. This ultra-long specification significantly reduces unnecessary connection joints in deep-sea drilling and chemical projects, thereby minimizing leakage risks and improving installation efficiency.

Q2: How do you ensure the stability of nickel alloy heat exchanger tubes in acidic environments?

A2: Materials such as alloy 825 and alloy 625 undergo strict heat treatment processes. In addition, MTSCO conducts 100% PMI testing to ensure alloy composition compliance. Combined with the bright annealing process, this enhances resistance to pitting and stress corrosion cracking, ensuring reliable performance in harsh environments containing H₂S and CO₂.

Q3: Does MTSCO provide matching fittings and flanges?

A3: Yes. As a factory-cluster supplier, MTSCO provides not only coiled tubing products but also matching pipes, tubes, fittings, and flanges. This one-stop supply model ensures material consistency throughout the entire piping system while significantly simplifying procurement and reducing logistics costs for customers.