Nickel Alloy Seamless Straight Pipes

Product Overview

Nickel Alloy Seamless Straight Pipes are engineered for critical applications in oil & gas, chemical processing, aerospace, and nuclear industries. Manufactured from premium grades like ​Inconel 625, ​Hastelloy C-276, and ​Monel 400, and compliant with ​ASTM B444, ​ASTM B619, and ​ASME SB622 standards, these pipes deliver unmatched resistance to oxidation, pitting, and stress corrosion cracking in extreme conditions.

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Product Specifications

​Material & Manufacturing

• Grades: Inconel 600/625, Hastelloy C-22/C-276, Monel 400, Alloy 20
• Standards: ASTM B444/B619/B622, EN 10216-5, NACE MR0175
• Surface Finish: Annealed & Pickled, Polished (Ra≤0.8μm), Bead-Blasted

​Dimensions & Tolerance

• Outer Diameter: 1/4″ to 24″ (DN6-DN600)
• Wall Thickness: SCH 5S to SCH 160 (0.5mm to 50mm)
• Length: Random (6-12m) or Cut-to-Size (Custom)

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Performance

• Temperature Range: -200°C to 1200°C (Cryogenic to High-Temp)
• Pressure Rating: Up to ​10,000 PSI(ASME B31.3 Compliance)
• Corrosion Resistance: HCl, H2S, Chlorides, Seawater

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Key Advantages

✅ ​Extreme Durability: Exceptional resistance to oxidation, carburization, and sulfidation.
✅ ​Zero Defects: 100% UT (Ultrasonic Testing) and Eddy Current Testing (ET).
✅ ​High-Temp Stability: Maintains tensile strength above 1000°C (Inconel 625).
✅ ​Custom Solutions: Custom diameters, heat treatments (Solution Annealing), and ASME Code Stamping.

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Applications

• ​Oil & Gas: Downhole tubing, sour gas pipelines, LNG heat exchangers
• ​Chemical Plants: Reactor coils, sulfuric acid concentrators
• ​Aerospace: Jet engine components, exhaust systems
• ​Nuclear Power: Steam generator tubes, radioactive waste handling
• ​Marine Engineering: Seawater cooling systems, offshore platform piping

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Certifications

• ISO 9001:2015, PED 2014/68/EU, NORSOK M-630
• NACE MR0103/MR0175 (H2S & Chloride Resistance)
• Mill Test Certificates (MTC) with PMI (Positive Material Identification)

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Packaging & Logistics

• ​Export Packaging: PVC-coated steel strapping, wooden crates with VCI anti-rust paper.
• ​Shipping: FOB/CIF/DDP terms; certified for IMDG/ATA Carnet.
• ​Lead Time: 20-30 days (standard), 45-60 days (custom heat-treated orders).

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Why Partner With TOKO TECH?

🔹 ​OEM Expertise: 10+ years in high-nickel alloy pipe manufacturing.
🔹 ​Full Traceability: Batch-specific material certificates (EN 10204 3.1/3.2).
🔹 ​Quality Assurance: Third-party SGS/BV inspection available.
🔹 ​Global Reach: Serving ExxonMobil, Chevron, and Siemens Energy.