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The manufacturing of hot-finished nickel-based alloy seamless pipes involves a complete process chain from melting, hot piercing/extrusion, to subsequent cold working and heat treatment. The melting stage generally employs a duplex process combining vacuum induction melting and electroslag remelting to achieve precise composition control and deep material purification. For high-alloyed grades such as N06690, hot working breakdown is typically performed at elevated temperatures between 1100 and 1200 degrees Celsius to break down the coarse as-cast structure and form a fine, uniformly distributed grain structure.

​The global stainless steel seamless pipe market is experiencing steady growth. Industry data indicates that the market size is projected to increase from USD 3.88 billion in 2025 to USD 5.15 billion by 2030, representing a compound annual growth rate of 5.8%. Another market analysis report forecasts the market could reach USD 5.93 billion by 2034. This growth trajectory is primarily fueled by robust demand from the oil and gas, chemical, power generation, and renewable energy sectors for high-performance tubular products.