Nickel Alloy

-Nickel alloy welded pipe Performance and industrial application advantages

ASTM B705 UNS N06625 nickel alloy welded pipes deliver exceptional corrosion resistance and high-temperature strength for extreme industrial environments. Combining ASTM B705 standards with Alloy 625's advanced properties, MTSCO provides precision-engineered solutions for offshore, chemical, aerospace, and nuclear applications, ensuring reliability under harsh conditions like chloride exposure, high-pressure systems, and radiation environments.

ASTM B705 is an American Society for Testing and Materials (ASTM) specification for nickel-based alloy welded pipe. Its background stems from the special needs of piping materials in extreme conditions such as deep-sea oil and gas extraction and chemical reactors.

In harsh industrial environments, ASTM B705 UNS N06625 nickel alloy welded pipes have become the core material of choice in the chemical, offshore and energy fields due to their excellent corrosion resistance and high temperature strength. As one of the specialized products of Maxtor Stainless Steel, these welded tubes strictly follow the ASTM B705 standard, combined with the unique properties of Alloy 625 (UNS N06625), to provide reliable solutions for customers all over the world.

Material Characterization: The Technology Core of Alloy 625

Alloy 625 is a nickel (≥58%) based superalloy with additions of chromium (20-23%), molybdenum (8-10%) and niobium (3-4%) to form a solid solution strengthened structure. Its resistance to pitting and crevice corrosion far exceeds that of 316L stainless steel, and it maintains its high strength at high temperatures (up to 980°C), while resisting strong corrosive media such as sulfuric acid and hydrochloric acid. MTSCO's precision welding processes (e.g. TIG welding) and solution heat treatments ensure that the weld zone of the welded pipe has the same properties as the base material, and that it meets the stringent requirements of ASTM B705 in terms of dimensional tolerances (±0.2mm) and surface finish.

Application areas: from the deep sea to the cloud

Offshore engineering: used in desalination systems, submarine pipelines, resistance to chloride ion erosion;

Chemical equipment: manufacturing reactors, heat exchangers, resistant to sulfur-containing oil and gas environment;

Aerospace: fuel delivery fittings to meet lightweight and high temperature resistance requirements;

Nuclear energy facilities: nuclear waste treatment containers, to ensure the stability of long-term radiation environment.

MTSCO provides customized welded pipes with OD 219-3000mm and wall thickness 4-60mm, supporting X-ray inspection, hydrotest (1.5 times design pressure) and third-party certifications (e.g. PED, TS). Relying on ISO 9001 quality system, the company carries out triple quality inspection from raw materials (in cooperation with Baosteel, TISCO, etc.) to finished products to ensure that each welded pipe meets API 5L and ASME B31.3 standards.

Through material innovation and process optimization, MTSCO continues to push the boundaries of nickel alloy welded pipe performance in extreme working conditions, providing bottom-up support for the reliable operation of industrial equipment.