Alloy 20 UNS N08020 Nickel Alloy Cold Rolled Seamless Pipe ASTM B729
NASP4 - Alloy 20 UNS N08020 Nickel Alloy Cold Rolled Seamless Pipe ASTM B729
Material: Alloy 800H, 800HT, UNSN08810&N08811; Alloy 800, UNS N08800; Alloy 825, UNSN08825, 2.4858;
Get A QuoteAlloy 20 UNS N08020 Nickel Alloy Cold Rolled Seamless Pipe ASTM B729
Meet MTSCO – Experts in Nickel Alloy Solutions
Since 2015, MTSCO has dedicated itself to the specialty alloy sector, establishing a mature supply system for high-performance nickel alloys. Leveraging our proprietary "factory complex" model, we specialize in producing premium seamless tubing, including Alloy 20. We hold international certifications including ISO, PED 2014/68/EU, AD2000, and M650, ensuring compliance with stringent engineering standards. MTSCO maintains a 20-person QC team permanently stationed on the production floor, rigorously executing full-process quality traceability from raw material PMI test to finished product non-destructive testing. With extensive delivery experience in FPSO offshore and global chemical projects, we provide comprehensive metal piping system solutions.
Key Specs at a Glance
| Property | Specification / Detail |
|---|---|
| Material Grade | Alloy 20 (UNS N08020 / 2.4660) |
| Standard | ASTM B729, ASME SB729 (Seamless Pipe) |
| Product Type | Cold Rolled Seamless Pipe |
| Outer Diameter (OD) | 8mm - 711mm |
| Wall Thickness (WT) | 1mm - 50mm |
| Length | ≤ 12m (Fixed or Random Length) |
| End Finish | Plain End (PE), Beveled End (BE) |
| Surface Finish | Annealed & Pickled (AP) |
| Testing | Hydrostatic, Eddy Current, PMI, Ultrasonic |
| Certificates | ISO 9001, PED 2014/68/EU, AD2000-W0, M650 |
Material Properties
Alloy 20 (UNS N08020) is a niobium-stabilized, low-carbon austenitic nickel-iron-chromium alloy. Originally engineered for sulfuric acid corrosion resistance, it exhibits exceptional tolerance to hot sulfuric, nitric, and phosphoric acid environments. Its copper content significantly enhances resistance to reducing media, while niobium effectively prevents intergranular corrosion. We source raw materials from major manufacturers and conduct secondary PMI test upon inventory receipt, ensuring compliance with key element specifications (e.g., Ni, Cr, Mo) from the source.

Where Can Our Nickel Alloy Pipes Perform?
Alloy 20 seamless pipes are extensively used in industrial processes handling sulfuric, phosphoric, and nitric acids. In chemical and petrochemical processing, it is commonly used for reactors, heat exchanger piping, and acid tank heating pipes. Its excellent resistance to pitting and crevice corrosion also makes it suitable for desalination plants and marine engineering. MTSCO possesses extensive global project supply experience, with our products successfully serving FPSO and various large-scale chemical plant projects. Our team provides professional technical consultation and material selection recommendations tailored to your specific operating conditions.
FAQ
Q1: Does this material support third-party inspections?
A1: Absolutely. We welcome on-site inspections by SGS, TUV, BV, or any third-party agency you designate. MTSCO products undergo multiple experimental verifications, including hydrostatic testing and intergranular corrosion testing.
Q2: What international certifications does the product hold?
A2: We are ISO 9001 Quality Management System certified. Our products hold PED, M650, and AD2000 certifications.
Q3: Can special dimensions and materials be customized for oil and gas projects?
A3: Yes. Whether it involves special wall thicknesses, non-standard dimensions, or high-performance alloy materials, we can provide customized production solutions.
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