Advancements in Stainless Steel for Completion Tools and Valve Bodies

Since 2010, the company has been researching and developing 9Cr and 13Cr series quenched and tempered materials, with over 13 years of mass production experience. These materials have gained mainstream market acceptance, with products covering North America, Singapore, the Middle East, India, and other regions. Annual sales exceed 6,000 tons, and the materials have been certified by international oil service companies such as Schlumberger, Baker Hughes, Halliburton, and Weatherford. Leading global oil and gas industry raw material distributors like Howco and Energy Alloy (EA) have been placing long-term stable orders.

In 2023, the company fully initiated S13Cr 95ksi and S13Cr 110ksi certifications. According to users, S13Cr certification is a milestone in the oil service market, serving as a bridge between past and future developments. It represents oil service companies’ recognition of the company’s oil and gas stainless steel while indicating the company’s entry into more advanced oil and gas stainless steel application fields. During certification, the material design not only focused on resistance to H2S stress corrosion cracking but also analyzed corrosion mass loss and localized corrosion based on actual service environments. The products feature high grain size and high uniformity tempered martensite structure, with δ-ferrite controlled within 0.5% and full cross-section hardness difference ≤2HRC.

AISI 410SS and F6NM for valves and valve bodies are typically made from bar stock through die forging to create oilfield valve body components, offering excellent longitudinal and transverse properties, low-temperature impact performance, and corrosion resistance. The main technical challenge for these components is low-temperature impact toughness, with requirements varying based on user environments, typically including impact performance at -29°C and -46°C. The company’s patented electric furnace + metallurgical melting furnace blending technology offers advantages such as short smelting cycles and high metal recovery rates. By using high-quality pig iron from their blast furnaces or quality pig iron + scrap steel for smelting, harmful elements like P content and the “five harms” are controlled to extremely low levels, giving them a significant quality advantage over traditional companies using scrap steel electric furnace smelting.

The smelting composition is controlled through internal control and targeting methods, ensuring stable final product performance, superior impact performance, and relatively lower costs, making them highly competitive in the international market.