As a prominent supplier, Excellent Overseas is responsible for delivering unparalleled quality in ASTM A671 EFW Pipe Suppliers from leading Manufacturers like Tubes, MSL, Seah, Hyundai, ArcelorMittal and NSSMC.
Table of Content
- 1. Supply Range & Specifications
- 2. Manufacturers in Stock
- 3. Chemical Composition
- 4. Mechanical Properties & Classes
- 5. Heat Treatment Requirements
- 6. Base Plate Equivalent Grades
- 7. Type of Manufacture Number
- 8. A671 Pipe Documentation
- 9. A671 vs A672 vs A333 Comparison
- 10. Coatings & Protection
- 11. Manufacturing Process
- 12. Countries We Export To
1. Carbon steel ASTM A671 Pipes range
SpecificationASTM A671 / ASTM A672 / ASME SA671 / ASME SA672
GradesCA55, CC60, CC65, CC70, CD70, CD80
TypeEFW (Electric Fusion Welded Pipes)
Class DesignationCLASS 10, 11, 12, 13, 20, 21, 22, 23, 30, 31, 32, 33, 40, 41, 42
Outer Diameter16" NB to 100" NB
Wall ThicknessSCH 20 to SCH XXS, Up to 60 mm
Length5-7m, 9-13m, SRL, DRL, Customize Size
EndsPlain Ends / Beveled Ends / Coupling
Delivery ConditionsAs Rolled, N, TMCP, Q&T (BR/N/Q/T)
CoatingEpoxy / Colour Paint / 3LPE
Value Added ServicesDraw, Expansion, Machining, Blasting, Galvanizing, Heat Treatment
PackagingLoose, Bundle, Wooden Pallet/Box, Plastic Wraps/Caps
TestingNACE MR0175, TM0177, TM0284, CVN, RT, UT, PT, MT, HIC, SSC, IBR, PWHT
Dimension Std.ASTM, ASME, API
TransportationBy Road, By Sea (Break-bulk, FCL, LCL, Open Top), By Air Freighter
2. Manufacturers in Stock
Hyundai Hysco
Valcovny Trub
Benteler Make
SEAH Korea
Butting Make
JFE Make
ArcelorMittal
Tenaris Steel
MSL Make
Nippon Steel
Tubular Canada
Tubos API
3. ASTM A671 Chemical Composition
| Grade | Base Plate Standard | C (max) | Mn (max) | P (max) | S (max) | Si (typical) | Other Elements |
|---|---|---|---|---|---|---|---|
| CC60 | ASTM A516 Gr. 60 | 0.22 | 0.79 – 1.30 | 0.025 | 0.025 | 0.13 – 0.45 | May include Cu, Cr, Ni, Mo |
| CC65 | ASTM A516 Gr. 65 | 0.24 | 0.79 – 1.30 | 0.025 | 0.025 | 0.13 – 0.45 | May include Cu, Cr, Ni, Mo |
| CC70 | ASTM A516 Gr. 70 | 0.28 | 0.79 – 1.30 | 0.025 | 0.025 | 0.13 – 0.45 | May include Cu, Cr, Ni, Mo |
| CB60 | ASTM A515 Gr. 60 | 0.24 | 0.79 – 1.30 | 0.025 | 0.025 | 0.13 – 0.45 | May include Cu, Cr, Ni, Mo |
Note: ASTM A671 doesn't define chemistry directly. Chemistry properties come from the corresponding base plate standard (ASTM A516 or ASTM A515).
4. ASTM A671 Mechanical Properties
| Grade | Base Plate | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Typical Classes |
|---|---|---|---|---|---|
| CC60 | ASTM A516 Gr. 60 | 415 – 550 | ≥ 220 | ≥ 21 | Class 10, 11, 12, 13, 22, 32 |
| CC65 | ASTM A516 Gr. 65 | 450 – 585 | ≥ 240 | ≥ 20 | Class 10, 11, 12, 13, 22, 32 |
| CC70 | ASTM A516 Gr. 70 | 485 – 620 | ≥ 260 | ≥ 17 | Class 10, 11, 12, 13, 22, 32 & 42 |
| CB60 | ASTM A515 Gr. 60 | 415 – 550 | ≥ 220 | ≥ 18 | Class 10, 11, 12, 13, 22, 32 |
A671 WELDED PIPES CLASSES
- Class 10 – Radiographic testing + Impact Test
- Class 11, 12, 13 – Radiographic + transverse tension + weld bend test + Impact Test
- Class 22 / 32 – As above + impact testing at required temperature (typically -29°C or -46°C)
- Properties are tested on base metal and weld seam as per class requirement. Mechanical properties correspond to ASTM A516 Grade 60, 65, 70 or ASTM A515 Grade 60 after welding and heat treatment.
5. ASTM A671 Pipe Heat Treatment
| Pipe Grade | Precipitation Heat Treat Temp °F [°C] | Post Weld Heat Treat Temp °F [°C] | ASTM Spec (Base) & Grade/Class | Min Quenching Temp °F [°C] | Max Normalizing Temp °F [°C] | Tempering Temp °F [°C] |
|---|---|---|---|---|---|---|
| CA 55 | ... | 1100 to 1250 [590 to 680] | A285/A285M (C) | ... | 1700 [925] | ... |
| CB 60 | ... | 1100 to 1250 [590 to 680] | A515/A515M (60) | ... | 1750 [950] | ... |
| CB 65 | ... | 1100 to 1250 [590 to 680] | A515/A515M (65) | ... | 1750 [950] | ... |
| CB 70 | ... | 1100 to 1250 [590 to 680] | A515/A515M (70) | ... | 1750 [950] | ... |
| CC 60 | ... | 1100 to 1200 [590 to 650] | A516/A516M (60) | 1700 [925] | 1700 [925] | 1100 [590] |
| CC 65 | ... | 1100 to 1200 [590 to 650] | A516/A516M (65) | 1700 [925] | 1700 [925] | 1100 [590] |
| CC 70 | ... | 1100 to 1200 [590 to 650] | A516/A516M (70) | 1700 [925] | 1700 [925] | 1100 [590] |
| CD 70 | ... | 1100 to 1250 [590 to 680] | A537/A537M (Cl 1) | ... | 1700 [925] | ... |
6. ASTM A671 Base Plate Equivalent Grades
| Standard | Description | Base Material Equivalent |
|---|---|---|
| ASTM A516 | Pressure Vessel Plates, Carbon Steel, for Moderate- and Lower-Temperature Service | Gr. 60 (for CC60) Gr. 70 (for CC70) |
| ASTM A515 | Pressure Vessel Plates, Carbon Steel, for Intermediate- and Higher-Temperature Service | Gr. 60 (for CB60) |
| EN 10028-2 / EN 10028-3 | European Standard for Pressure Purpose Steel | P265GH / P355NL1 |
7. Type of Manufacture Number Review
Type-of-manufacture numbers appear in project documents and ASTM A671 / A672 reference tables. They are a manufacturing-category check, not a substitute for grade, class, size, welding route or inspection records.
| Type Group | Type Numbers Listed | How to use in an ASTM A671 order |
|---|---|---|
| Group 1 | 10, 11, 12, 13 | Check only when the project specification calls for a type number. Confirm exact meaning in the applicable standard and PO. |
| Group 2 | 20, 21, 22, 23 | Verify the number against production route, class condition, inspection records and MTC. |
| Group 3 | 30, 31, 32, 33 | Do not treat the number as decorative code; it belongs to the technical identity of the supplied pipe. |
| Group 4 | 40, 41, 42, 43 | If required, the type number should be visible in order review and supported by production / inspection evidence. |
8. A671 Gr CC65 EFW Welding Pipe Documentation
- Material Test Certificates (MTC) as per EN 10204 3.1 & 3.2
- Commercial Invoice (includes HS Code)
- Quality Assurance Plan (QAP)
- Form A for Generalized System of Preferences (GSP)
- NABL Approved Laboratory Test Reports
- Fumigation Certificates
- Test Reports of Raw Material
- Guarantee Letter
- Material Traceability Records
- Heat Treatment Charts
- Test Certificates for NACE MR0175/ MR0103
- WPS/PQR, Welding Procedure Qualification Record
9. Detailed Comparison: ASTM A671 vs ASTM A672 vs ASTM A333
| Feature | ASTM A671 | ASTM A672 | ASTM A333 |
|---|---|---|---|
| Product route | EFW welded pipe | EFW welded pipe | Seamless or welded pipe |
| Material basis | Pressure-vessel-quality plate | Pressure-vessel-quality plate | Carbon and alloy steel pipe material |
| Main service direction | Atmospheric and lower-temperature service | Moderate-temperature high-pressure service | Low-temperature service |
| Key selection focus | Grade, class, type, impact/exam requirement | Grade, class, type, pressure-temp condition | Low-temperature toughness & impact testing |
| Common size direction | Often used for larger welded pipe requirements | Often used for larger welded pressure pipe | Often used for small to medium pipe sizes |
| Key inspection records | Weld inspection, dimensional tolerance, MTC, NDT/hydrotest | Weld inspection, pressure-temperature review, MTC | Impact test, heat treatment, MTC |
10. A671 Pipe Coating Material and Protection
Excellent Overseas supplies rigorously tested ASTM A671 Pipe with Multilayer Coating options globally, customized as per project requirement.
Surface Finish: Natural, Bare, Black Painting, Varnished
Protective Coatings: FBE, 3LPE, 3PE, Epoxy Coated
Lining/Cladding: CRA Clad and Lined Pipe
End Protection Caps: Plastic or Iron
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11. Process of Manufacturing
12. Countries We Export To
Canada
Turkey
Spain
Vietnam
Malaysia
Germany
Saudi Arabia
Singapore
France
Mexico
Kuwait
USA
South Korea
Australia
Qatar
Italy
Oman
Egypt
China
Brazil
UAE
Indonesia
UK
Thailand