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Welded Nickel & Nickel-Cobalt Alloy Pipe Suppliers in China | High-Temperature & Corrosion Resistant Factory Products
Ordering Information
Buyers must specify:
- ASTM Standard (B619-22) and alloy UNS number (e.g., N06625)
- Dimensions (OD, wall thickness, length)
- Condition (as-welded, annealed, cold-worked)
- Finish (pickled, blasted, etc.)
- Certification (if required)
- Additional Testing (e.g., hydrostatic, NDE)
Material Codes (UNS Alloys)
Common alloys covered:
- N02200, N02201 — Nickel 200/201
- N06600 — Inconel 600
- N06625 — Inconel 625
- N08825 — Incoloy 825
- N10276 — Hastelloy C276
Chemical Composition
- Strict limits for nickel, chromium, cobalt, molybdenum, and other elements based on UNS alloy
- Trace elements (e.g., carbon, sulfur) are controlled
Mechanical Properties
- Tensile strength, yield strength, elongation requirements vary by alloy and condition
- Example: N06625 annealed pipe must have ≥ 120 ksi (827 MPa) tensile strength
Inspection & Testing Requirements
- Chemical Analysis: Performed on heat samples
- Tension Tests: One per lot
- Hydrostatic Testing: Optional unless specified
- NDE (Non-Destructive Examination): Radiography or dye penetrant testing for welds (if required)
- Visual Inspection: Surface defects must meet acceptance criteria
Certification & Marking
- Mill Test Reports must include chemical, mechanical, and test results
- Pipe Marking: Alloy UNS, ASTM standard, heat number, size, and manufacturer's identification
Keywords
- Nickel alloy pipe, welded pipe, corrosion-resistant, high-temperature, UNS N06625
The ASTM B619-22 standard covers welded nickel and nickel-cobalt alloy pipes and includes the following UNS (Unified Numbering System) material codes for the alloys specified:
List of Material Codes (UNS Alloys) in ASTM B619-22
| UNS Number | Common Alloy Name | Primary Composition |
|---|---|---|
| N02200 | Nickel 200 | 99.6% Ni (low carbon) |
| N02201 | Nickel 201 | 99.6% Ni (very low carbon) |
| N04400 | Monel 400 | Ni-Cu (66% Ni, 31.5% Cu) |
| N06600 | Inconel 600 | Ni-Cr-Fe (72% Ni, 15% Cr) |
| N06625 | Inconel 625 | Ni-Cr-Mo (61% Ni, 21.5% Cr, 9% Mo) |
| N08800 | Incoloy 800 | Ni-Fe-Cr (32.5% Ni, 21% Cr) |
| N08810 | Incoloy 800H | High-carbon 800 variant |
| N08811 | Incoloy 800HT | Stabilized 800H variant |
| N08825 | Incoloy 825 | Ni-Fe-Cr-Mo (42% Ni, 21.5% Cr, 3% Mo) |
| N10276 | Hastelloy C276 | Ni-Mo-Cr (57% Ni, 16% Cr, 16% Mo) |
| N06022 | Hastelloy C22 | Ni-Cr-Mo-W (56% Ni, 22% Cr, 13% Mo) |
| N06059 | Hastelloy C59 | Ni-Cr-Mo (59% Ni, 23% Cr, 16% Mo) |
| N06455 | Hastelloy C-4 | Ni-Mo-Cr (65% Ni, 16% Mo) |
| N06985 | Hastelloy G-3 | Ni-Cr-Fe-Mo-Cu (44% Ni, 22% Cr) |
| N06007 | Hastelloy G-30 | Ni-Cr-Fe-Mo (43% Ni, 30% Cr, 5% Mo) |
| N06200 | Hastelloy C-2000 | Ni-Cr-Mo-Cu (59% Ni, 23% Cr, 16% Mo) |
| N06686 | Inconel 686 | Ni-Cr-Mo-W (58% Ni, 21% Cr, 16% Mo) |
| N10665 | Hastelloy B-2 | Ni-Mo (65% Ni, 28% Mo) |
| N10675 | Hastelloy B-3 | Ni-Mo (65% Ni, 28.5% Mo) |
Notes:
1. Welded Pipe Types: These alloys can be supplied in as-welded, annealed, or cold-worked conditions.
2. Overlap with Other Standards: Some alloys (e.g., N06625, N10276) are also covered in ASTM B622 (seamless pipe) and ASTM B829 (general requirements).
3. Corrosion & High-Temp Use: Alloys like C276 (N10276) and 625 (N06625) are common in aggressive environments.
For exact chemical composition limits and mechanical properties, refer to ASTM B619-22, Table 1 (Chemical) & Table 2 (Mechanical).
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Frequently Asked Questions (FAQ)
What is ASTM B619-22 and what does it cover?
ASTM B619-22 is a standard specification that covers welded nickel and nickel-cobalt alloy pipes. It defines the chemical composition, mechanical properties, testing requirements, and certification criteria for a wide range of UNS alloys used in high-temperature and corrosion-resistant applications.
Which UNS alloys are included under ASTM B619-22?
ASTM B619-22 covers numerous UNS alloys including N02200 (Nickel 200), N04400 (Monel 400), N06600 (Inconel 600), N06625 (Inconel 625), N08825 (Incoloy 825), N10276 (Hastelloy C276), and many more Hastelloy and Incoloy variants. A full list is available in the standard's tables.
What conditions can ASTM B619-22 welded pipes be supplied in?
Pipes covered by ASTM B619-22 can be supplied in three conditions: as-welded, annealed (solution annealed), and cold-worked. The specific condition must be stated at the time of ordering and affects the applicable mechanical property requirements.
What testing is required for ASTM B619-22 pipes?
Required testing includes chemical analysis performed on heat samples and tension tests (one per lot). Optional tests — such as hydrostatic testing and non-destructive examination (NDE) including radiography or dye penetrant testing — may be specified by the buyer. Visual inspection for surface defects is also mandatory.
What information must be included on the Mill Test Report (MTR)?
The Mill Test Report must include the results of chemical analysis, mechanical testing, and any additional tests performed. Pipe marking must show the alloy UNS number, ASTM standard designation, heat number, pipe size, and the manufacturer's identification mark.
How does ASTM B619 differ from ASTM B622?
ASTM B619 specifically covers welded nickel and nickel-cobalt alloy pipes, while ASTM B622 covers seamless pipes and tubes made from the same alloy families. Some alloys such as N06625 and N10276 appear in both standards, but the manufacturing process and applicable requirements differ between welded and seamless products.