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ASTM A789 / A789M covers the requirements for seamless and welded duplex stainless steel tubes for general corrosion-resistant service, with particular emphasis on resistance to stress corrosion cracking. This product combines the excellent toughness of austenitic stainless steel with the high strength of ferritic stainless steel, while offering superior resistance to chloride-induced pitting and crevice corrosion. This product covers common grades including UNS S31803,

The Stainless Steel Welded Square Tubing is manufactured from high-quality austenitic stainless steel coils, formed into a square shape, and longitudinally welded using advanced TIG (GTAW) or ERW processes. This product offers an excellent combination of corrosion resistance, structural strength, and aesthetic appeal. Its square profile provides superior load-bearing characteristics, ease of fabrication, and clean, modern appearance, making it the preferred choice for

Schedule 40 Stainless Steel Pipe is a standard wall thickness pipe widely used in industrial, commercial, and residential applications. It offers a balanced combination of strength, corrosion resistance, and cost-effectiveness. Manufactured from high-quality austenitic stainless steel grades such as 304 and 316, this pipe is suitable for fluid transport, structural support, and process piping systems. Schedule 40 wall thickness provides higher pressure ratings than Schedule

ASTM A199 / A199M is a standard specification for seamless cold-drawn intermediate alloy-steel tubes used in heat exchangers, condensers, and similar heat transfer apparatus. These tubes are manufactured from chromium-molybdenum and chromium-molybdenum-silicon alloy steels, offering excellent resistance to high temperatures and pressures. ASTM A199 Heat-exchanger Tube is designed for service temperatures ranging from –100°C to +625°C (-150°F to 1150°F). They are widely used

ASTM A789 UNS S32750 super duplex stainless steel tube is a premium-grade product designed for the most demanding industrial applications. With a higher chromium, molybdenum, and nitrogen content than standard duplex grades (e.g., 2205/S31803), UNS S32750 offers superior strength and exceptional corrosion resistance, particularly in aggressive chloride-containing environments. This tube is manufactured in accordance with ASTM A789, covering both seamless and welded ferritic

Marine grade stainless seamless pipe refers to 316 and 316L stainless steel, the industry standard for applications requiring superior corrosion resistance in chloride-rich and marine environments. The addition of 2-3% molybdenum distinguishes this grade from 304, providing significantly enhanced resistance to pitting, crevice corrosion, and stress corrosion cracking in seawater, brackish water, and chemical environments. The seamless manufacturing process ensures uniform

ASTM A312 stainless steel pipe is a high-performance austenitic stainless steel pipe manufactured in accordance with ASTM A312 / ASME SA312, available in both seamless and welded types. This series of pipes offers excellent corrosion resistance, high-temperature strength, and good workability. It is widely used in industries such as oil and gas, chemical processing, power generation, marine engineering, water treatment, and pressure vessels. Full-size ranges, multiple grades,

ASTM A789 2205 油圧プロセスライン用二重シームレスチューブ耐食性

What Is ASTM A554? ASTM A554 is the American standard for welded stainless steel mechanical tubing in round, square, and rectangular shapes. It is specifically designed for mechanical and structural applications – not for pressure service (use ASTM A269 or A312 for pressure). Square tubes under ASTM A554 are produced as cold-formed welded tubes from stainless steel strips, then heat-treated and finished to meet mechanical property requirements. The standard covers multiple