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UNS S31803 duplex stainless steel pipe is a widely used duplex grade that offers a balanced mix of good strength, excellent corrosion resistance, and cost-effectiveness. It is the original standard duplex stainless steel, commonly specified in ASTM A790 and ASTM A789 for both seamless and welded pipe applications.With a dual-phase microstructure (austenite + ferrite), UNS S31803 provides approximately twice the yield strength of 304 or 316L austenitic stainless steels, while

Chrome-manganese austenitic seamless pipe is an economical alternative to traditional chromium-nickel austenitic stainless steels such as 304 and 316. This grade achieves a stable austenitic structure by substituting a portion of expensive nickel with more cost-effective manganese and nitrogen, delivering comparable mechanical properties at a significantly lower material cost. The most common chrome-manganese austenitic grade is 201 stainless steel (UNS S20100), which

Welded stainless steel tube is manufactured by forming stainless steel strip into a tube shape and longitudinally welding the seam using automatic GTAW (Tungsten Inert Gas) or laser welding processes. After welding, the tube undergoes solution annealing and NDT testing to ensure weld integrity and consistent corrosion resistance. Welded tubes offer a cost-effective alternative to seamless tubes for applications not requiring the extreme pressure ratings or critical service

ASTM A789 UNS S32760 buis super duplex roestvrij staal voor extreme omgevingen

Seamless stainless steel square tubing is a hollow structural section with four equal sides and no welded seam along its length. It is manufactured by extruding a solid billet of stainless steel into a hollow tube, then forming it into a square shape.The absence of a weld seam provides superior strength, uniform wall thickness, and excellent performance under high pressure and extreme temperatures. Our seamless square tubing is ideal for critical applications where reliabilit

Hot rolled stainless steel round pipe is manufactured by heating a solid stainless steel billet to approximately 1200°C (2200°F) and then rolling it through a series of mills to form a hollow tube. This high-temperature forming process allows for the production of large diameter, thick wall pipes that cannot be efficiently manufactured through cold drawing methods. Hot rolled seamless pipes are the backbone of heavy industrial piping systems, offering excellent mechanical

U-bend stainless steel heat exchanger tubes are seamless or welded tubes precision-formed into a U-shape, designed specifically for shell and tube heat exchangers. This U-configuration allows the tube bundle to expand and contract freely under thermal stress while eliminating the need for a second tube sheet, making the entire heat exchanger more compact, cost-effective, and easier to maintain. Manufactured from high-quality austenitic stainless steel grades such as 304, 304L

2205 duplex stainless steel pipe is a nitrogen-enhanced duplex grade with a two-phase microstructure consisting of approximately 50% austenite and 50% ferrite. This balanced structure provides approximately twice the yield strength of standard austenitic stainless steels such as 304 and 316, combined with excellent corrosion resistance. 2205 is the most widely used duplex stainless steel grade, offering an exceptional combination of high strength, good weldability, and

Chrome-Manganese Austenitic Seamless Pipe with Mill Test Certificate The Chrome-Manganese Austenitic Seamless Pipe is an austenitic chromium-nickel-manganese alloy that provides an economical solution for moderately corrosive environments. Compared to standard carbon steel, it delivers superior oxidation resistance and significantly higher mechanical strength. At ZhongCheng, we manufacture these pipes in strict accordance with ASTM A554 / A312 standards, ensuring precise