Providing safe and reliable stainless steel pipes and tubes for global industrial facilities!

Specification: Seamless & Welded Steel Pipe & Tube

  • OD: Φ10.3-Φ914.4mm(1/8″-36″);
  • WT: 0.5-60mm(SCH5S-XXS);
  • Length: up to 35m.
Seamless Stainless Steel Tubes


Power industry, oil and gas exploitation, petroleum refining, chemical industry, coal chemical industry, Marine engineering, sea water treatment, construction, food processing, medical treatment, etc

Austenitic stainless steel has austenite as its primary phase at both elevated and room temperature. A stable austenite structured steel contains about 18% Cr, 8% ~ 10% Ni and about 0.1% C. Chrome-nickel austenitic stainless steel including the most familiar stainless steel 18Cr-8Ni (TP304) and the series of high Cr-Ni steel developed by increase Cr, Ni contents and add Mo, Cu, Si, Nb, Ti and other elements. Austenitic stainless steel is characterized by non-magnetic, high plasticity and ductility but lower strength. It can be only strengthened via cold working (by adding S, Ca, Se, Te and etc, austenitic stainless steel can have excellent machinability).

Grade: 304/304L, 316/316L, 321/321H, 347H, 310S, 904L, S31254, N08926, N08367…



  1. Excellent corrosion resistance
  2. Good for cold working or hot working
  3. High plasticity and ductility
  4. Optimum general performance
  5. A wide range of applications

Duplex stainless steel has an α+γ dual-phase structure, so its performance characteristics are built on the characteristics of austenitic stainless steel and ferritic stainless steel. It is a type of stainless steel with the highest strength and corrosion resistance. Generally, in the case of low C content, Cr content is 18%~28%, Ni content is 3%~10%. Some steels also contain alloying elements such as Mo, Cu, Nb, Ti, and N.

Compared with ferrite, it has higher plasticity and toughness, no room temperature brittleness, significantly improved intergranular corrosion resistance and welding performance, while maintaining the 475°C brittleness and high thermal conductivity of ferritic stainless steel, with superplasticity, etc. Features. Compared with austenitic stainless steel, the yield strength is significantly improved, and the properties of intergranular corrosion resistance, stress corrosion, corrosion fatigue and abrasion are significantly improved.

Grade: S31500, S31803, S32205, S32750, S32760, S32707…

  • ASME SA789
  • ASME SA790
  • ASME SA928


  1. Excellent resistance to general corrosion and local corrosion, especially stress corrosion resistance, pitting corrosion resistance, crevice corrosion resistance, corrosion fatigue resistance and wear resistance corrosion, etc.
  2. Good weldability
  3. Good comprehensive mechanical properties
  4. Good resistance to intergranular corrosion
  5. High cost performance, long service period

Corrosion-resistant and high-temperature-resistant alloys include nickel-based alloys and iron-based alloys. They have high strength and corrosion resistance at high temperatures of 650-1000°C. They are a class of alloys with good comprehensive performance and a wide range of applications.

Materials: Monel (Monel 400), Inconel (600, 625), Incoloy (800/800H, 825 series) and Hastelloy (B2, C22, C276…).

  • ASTM B163
  • ASTM B167
  • ASTM B407
  • ASTM B444

Features(depending on the specific brand):

  1. Good resistance to stress, pitting corrosion, crevice corrosion and local corrosion at room temperature
  2. Excellent mechanical properties at room temperature
  3. Good corrosion resistance under high temperature environment
  4. It still has high mechanical properties under high temperature environment

Ferritic stainless steel is a type of body-centered cubic structure with a carbon content of ≤0.02% and a chromium content of 10.5%~32%. It is a ferritic stainless steel at high temperature and room temperature. It is also a type of stainless steel that cannot be treated by heat treatment. Stainless steel to strengthen it. This stainless steel has a wide range of applications and excellent comprehensive performance. It is the most important nickel-saving stainless steel in stainless steel.

Materials: 405, 409L, 430, 439, 444, 446, 410, 420, S41500, 440C, Super 13Cr, 17Cr);

  • ASTM A268
  • JIS G3463
  • GB/T 30065
  • GB/T 30066 

Performance characteristics:

  1. Large thermal conductivity
  2. Small expansion coefficient
  3. Good oxidation resistance
  4. Excellent resistance to stress corrosion
Available U-Bedd Tubes
ProductsDimensions (mm) O.D.W.T.LengthStandardsMaterialsRemakrs
U-Bend Tubes for Heat Exchanger12.7-76.2mm (1/2″-3″)0.5-5.16mm (0.02″-0.203″)Leg Legnth: 15.24m(50′) Total ength: 32.00m (105′)ASTM/ ASME A/SA213T5,T11,T12,T22,T9,T91, TP304/304L,TP304H, TP316/316L,TP347/347H, TP316Ti,TP321/321H, TP310SSeamless Ferritic and Austenitic Stainless Steel U-Bend Tubes
ASTM/ ASME A/SA249TP304,TP304L,TP316,TP316L…Welded Stainless Steel U-Bend Tubes
ASTM/ ASME A/SA789UNS S31803/32205, UNS S32750…Duplex Stainless Steel U-Bend Tubes
ASTM/ ASME A/SA163Monel400, UNS N06600,625, Incoloy800/800H,825…Seamless Nickel Alloy U-Bend Tubes
ASTM/ ASME A/SA268TP405, TP409, TP410S, TP430, TP439, S44660…Ferritic and Martensitic Stainless Steel Seamless U-Bend Tubes
Seamless And Welded (Re-drawn) Stainless Steel Feed Water Heater U-Bend Tubes12.7-25.4mm (1/2″-1″)0.7-3.05mm (0.028″-0.12″)Leg Legnth: 15.24m(50′) Total Length: 32.00m(105′)ASTM/ ASME A/SA688,ASTM/ ASME A/SA213,ASTM/ ASME A/SA803TP304/304L/304LN, TP316/316L/316LN, TP439…Feed Water Heater Tubes for Thermal Power Station