Seamless Incoloy 825 Tubes (UNS N08825 / W.Nr. 2.4858) are high-performance nickel-iron-chromium solutions engineered for exceptional resistance to both reducing and oxidizing acids. Our Incoloy 825 seamless pipes comply with ASTM B423 and ASME SB423 standards, offering superior protection against stress-corrosion cracking, pitting, and crevice corrosion in sulfuric and phosphoric acid environments. Through advanced cold-drawing and precise heat treatment, XinZhe delivers durable, high-strength tubing for chemical processing, marine engineering, and oil & gas applications. Rely on our expertise for certified alloy solutions that meet the most stringent industrial specifications.

Seamless Incoloy N08028 Tube (Alloy 28 / Sanicro 28) are high-alloy austenitic stainless steel tubes engineered for outstanding resistance to strong mineral acids and chloride-induced Stress Corrosion Cracking (SCC) in highly aggressive industrial environments. Renowned for their excellent performance in phosphoric acid (H₃PO₄) and sulfuric acid (H₂SO₄) processing, UNS N08028 tubing significantly outperforms conventional stainless steels such as 316L and 904L in demanding applications including fertilizer production, oil and gas sour service, chemical processing, and hydrometallurgy. Through advanced cold drawing and precision solution annealing, XinZhe ensures that each seamless Alloy 28 tube achieves a uniform metallurgical structure, excellent surface finish, and precise dimensional tolerances. With a Pitting Resistance Equivalent Number (PREN) of approximately 38–40, Alloy 28 provides superior resistance to pitting and crevice corrosion in chloride-containing environments. For specialized industrial requirements, our technical team provides custom tube dimensions, various wall thickness options, and full material traceability with EN 10204 3.1 / 3.2 Material Test Certificates (MTC).