As a leading distributor of large-diameter process pipes, Excellent Overseas specializes in ASTM A671 EFW (Electric Fusion Welded) pipes manufactured from pressure vessel plates by top mills such as JFE, Hyundai, Nippon Steel, and EEW.
Table of Content
Supply Range & Dimensions
Outer Diameter (OD)16" NB to 120" NB
Schedule (WT)SCH 20 up to XXS (max 50mm+)
Length5 Mtr, 6 Mtr, 11 Mtr, 12 Mtr & Custom
Popular GradesCC60, CC65, CC70, CB60
Popular ClassesClass 12, Class 22, Class 32
Manufacturing FormEFW, LSAW, DSAW (Plate Rolled)
Base Plate SpecsASTM A516 (Gr.60/65/70)
Testing100% Radiography (RT) per Class
CertificationsEN 10204 3.1 / 3.2, IBR, NACE
Surface FinishBare, Black Paint, Epoxy Coated
Value AddedBeveling, Girth Welding, Machining
Export AreasUSA, Saudi Arabia, Kuwait, Europe
Manufacturers in Stock
JFE Steel
Hyundai Steel
Nippon Steel
ArcelorMittal
Tenaris
MSL
EEW Group
Tubos Reunidos
Chemical Composition (Based on Plate Spec A516)
| A671 Grade | Base Plate Spec | C (Max) % | Mn % | P (Max) % | S (Max) % | Si % |
|---|---|---|---|---|---|---|
| CC60 | A516 Gr 60 | 0.21 | 0.85 - 1.20 | 0.035 | 0.035 | 0.15 - 0.40 |
| CC65 | A516 Gr 65 | 0.24 | 0.85 - 1.20 | 0.035 | 0.035 | 0.15 - 0.40 |
| CC70 | A516 Gr 70 | 0.27 | 0.85 - 1.20 | 0.035 | 0.035 | 0.15 - 0.40 |
Mechanical Properties
| Grade | Yield Strength (Min) | Tensile Strength | Elongation (%) |
|---|---|---|---|
| CC60 | 220 MPa (32,000 psi) | 415 – 550 MPa (60-80 ksi) | 21% |
| CC65 | 240 MPa (35,000 psi) | 450 – 585 MPa (65-85 ksi) | 19% |
| CC70 | 260 MPa (38,000 psi) | 485 – 620 MPa (70-90 ksi) | 17% |
ASTM A671 Class Designations (Heat Treatment & RT)
| Class No. | Heat Treatment Required | Radiographic Testing (RT) |
|---|---|---|
| Class 10 | None | None |
| Class 12 | None | 9, RT (100% Weld) |
| Class 20 | Stress Relieved | None |
| Class 22 | Stress Relieved | 9, RT (100% Weld) |
| Class 32 | Normalized | 9, RT (100% Weld) |
ASTM A671 EFW Applications
Chemical Processing
Oil & Gas Refineries
Power Generation Stations
Atmospheric / Low Temp Storage
Large Water Transmission
Transit Timing & Delivery
| Country | Destination Port | Sea Freight Timing | Air Freight Timing |
|---|---|---|---|
 Saudi Arabia | Dammam / Jubail | 10–14 Days | 1–2 Days |
 UAE | Jebel Ali | 4–6 Days | 1 Day |
 United States | Houston | 38–45 Days | 4–5 Days |
 Germany | Hamburg | 30–34 Days | 2–3 Days |
 Singapore | Port of Singapore | 12–16 Days | 1–2 Days |
Process of Manufacturing
A671 pipes are fabricated by forming steel plates into cylinders and utilizing Electric-Fusion-Welding (EFW) with added filler metal.
Coating Material & Protection
Black Paint / Varnish
3LPE / 3LPP Coated
FBE Coated
ASTM A671 vs ASTM A672
ASTM A671
- • Designed for Atmospheric and Lower Temperatures.
- • Often requires Charpy V-Notch impact testing depending on class/grade.
- • Commonly used in low-temp chemical processing and storage.
ASTM A672
- • Designed for Moderate Temperatures and high pressure.
- • Generally does not require rigorous low-temperature impact testing.
- • Frequently used in refineries, power plants, and high-pressure steam lines.
Types of ASTM A671 Pipes
Grade CC60 EFW
Grade CC70 EFW
A671 Class 12
A671 Class 22
Countries We Export To
- United States
Canada- Saudi Arabia
- UAE
Qatar
Oman
Kuwait
Bahrain
United Kingdom- Germany
Italy
Spain
Brazil
South Africa
Australia- Singapore
Malaysia
Indonesia
Vietnam
Thailand