C-276 Welded Pipe for Corrosion-Resistant Heat Exchangers
Introduction:
The C-276 welded pipe is a high-performance nickel-molybdenum-chromium alloy designed for corrosion-resistant heat exchanger systems in chemical, petrochemical, and industrial applications. Known for its superior resistance to oxidizing and reducing environments, C-276 is ideal for handling aggressive fluids, high-chloride solutions, and highly acidic process streams. Its welded construction ensures strong, leak-free joints, and the smooth pickled and passivated surface optimizes fluid flow while minimizing scaling and fouling. This pipe is extensively used in industrial heat exchangers, condensers, evaporators, and offshore process systems, offering reliable long-term performance under high temperature and high-pressure conditions.
Material Table:
| Material Grade |
Description |
Key Properties |
| C-276 Alloy |
Nickel-Molybdenum-Chromium Alloy |
Excellent resistance to pitting, crevice corrosion, and oxidation in aggressive chemical environments |
Specifications Table:
| Parameter |
Value / Range |
| Standard |
ASME SB-751 / ASTM B574 |
| Pipe Type |
Welded |
| Outer Diameter (OD) |
12.7mm – 200mm |
| Wall Thickness (WT) |
1.5mm – 12mm |
| Length |
6m / 12m |
| Surface Finish |
Pickled & Passivated / Polished |
| Connection Type |
Butt-welded / Socket-weld |
| Pressure Rating |
Up to 200 bar (depending on schedule) |
Manufacturing Process Table:
| Step |
Description |
| Raw Material Selection |
Premium C-276 alloy billets |
| Forming |
Hot or cold forming into precise welded pipe shape |
| Welding |
TIG or MIG welding for strong and uniform joints |
| Heat Treatment |
Solution annealing to enhance corrosion resistance and mechanical strength |
| Surface Treatment |
Pickling and passivation for smooth, corrosion-resistant surface |
| Inspection & Testing |
Hydrostatic, ultrasonic, and dimensional inspections |
| Packaging |
Protective packaging to prevent scratches and damage during transport |
Uses / Applications Table:
| Industry / Application |
Description |
| Chemical Industry |
Transport of aggressive acids, chlorides, and oxidizing chemicals |
| Petrochemical Industry |
High-pressure process piping for corrosive fluids |
| Heat Exchangers |
Tubing for industrial heat transfer systems |
| Evaporators and Condensers |
Corrosion-resistant industrial fluid transfer |
| Offshore & Marine Systems |
Seawater and brine-resistant piping |
Advantages:
-
Exceptional Corrosion Resistance: Resistant to oxidizing and reducing chemicals, acids, and chlorides.
-
High Strength and Durability: Suitable for high-pressure and high-temperature systems.
-
Welded Construction: Ensures leak-free, long-lasting performance.
-
Smooth Surface Finish: Reduces scaling, fouling, and improves heat exchanger efficiency.
-
Versatile Applications: Ideal for chemical, petrochemical, offshore, and industrial heat exchanger systems.
FAQ:
-
Q: Can C-276 welded pipe be used in highly acidic environments?
A: Yes, it provides excellent resistance to both oxidizing and reducing acids.
-
Q: Are custom sizes and wall thicknesses available?
A: Yes, OD, WT, and length can be tailored to project requirements.
-
Q: Is it suitable for offshore or seawater applications?
A: Absolutely, C-276 withstands seawater, brine, and chloride-rich environments.
-
Q: How is quality ensured?
A: Pipes are tested via hydrostatic, ultrasonic, and dimensional inspections according to ASME SB-751 and ASTM B574 standards.
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