Q1: What is the difference between seamless and welded pipes/tubes for nickel alloys?
A: Seamless pipes/tubes are made from a solid billet and offer uniform strength, high-pressure resistance, and better reliability in critical applications such as chemical, aerospace, and power generation. Welded pipes are made by rolling and welding metal sheets; they are more cost-effective and suitable for low- to medium-pressure applications.
Q2: What are the main applications of Inconel 600, 601, and 602 pipes and tubes?
A:
Inconel 600: Excellent corrosion and oxidation resistance, used in heat exchangers, furnace components, and chemical equipment.
Inconel 601: Superior high-temperature oxidation resistance, ideal for gas turbine components and industrial heaters.
Inconel 602: High strength at elevated temperatures, suitable for aerospace, chemical, and high-temperature piping applications.
Q3: What industries typically use Incoloy 800/800HT and Hastelloy C276 pipes?
A:
Incoloy 800/800HT: Used in power generation, petrochemical, and furnace applications due to high-temperature strength and resistance to oxidation.
Hastelloy C276: Commonly used in chemical processing, pollution control, and pharmaceutical industries for extreme resistance to acids, chlorides, and high-temperature corrosion.
Q4: Can nickel and alloy steel sheets (718, 690, 617) be used for high-temperature applications?
A: Yes. These alloys are designed for extreme temperatures:
Inconel 718: High strength, creep and fatigue resistance, used in aerospace and turbine components.
Alloy 690: Excellent resistance to stress corrosion cracking, often used in nuclear and chemical industries.
Alloy 617: High-temperature oxidation resistance, suitable for gas turbines and power plants.
Q5: How is the pricing of these pipes, tubes, and sheets calculated per kg?
A: Pricing per kg depends on factors such as alloy type, dimensions (OD, thickness, length), processing method (seamless or welded, polished finish), and market nickel prices. High-performance alloys like Inconel 625, C276, or 718 sheets are more expensive due to superior corrosion resistance and high-temperature performance.
