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Seamless stainless steel pipe

Seamless stainless steel pipe

It is the resistance of air, steam, water and other weak corrosive media and acid, alkali, salt and other chemical etching medium corrosion of steel pipes. Also known as acid - resistant stainless steel.

304 (0Crr18Ni9)Seamless stainless steel pipe
304 (0Crr18Ni9)Seamless stainless steel pipe

Stainless steel pipes is safe and reliable, environmental health, affordable, and the thin wall of the pipe as well as new and reliable, the successful development of a simple and convenient connection method, which make it more irreplaceable advantages. It will be more and more engineering use and become increasingly popular, and prospects.

Stainless steel seamless pipe features:
First, the thicker the wall thickness of the product, it is more economical and practical, the wall thickness of the thinner, its processing costs will rise substantially;

Secondly, the process of the product determines its limitations, the low accuracy of the general seamless tube: non-uniform wall thickness, the appearance of low brightness tube, the high cost of fixed length, and within the appearance of pitting, black spots difficult to remove; Third, the detection and plastic must be offline processing. So it is at high pressure, high strength, the mechanical structure timber reflects its superiority.

The corrosion resistance of stainless steel seamless pipe depends on the alloying elements contained in the steel. Chromium is the basic elements of corrosion resistance for the stainless steel, about 12% the amount of chromium in the steel, chromium and oxygen role in the corrosive medium, the steel surface to form a thin oxide film (passive film) matrix can prevent the steel from further corrosion. Removing chromium, stainless steel seamless pipe commonly used alloying elements there are nickel, molybdenum, titanium, niobium, copper, nitrogen, etc., to meet the requirements of the various uses of the organization and performance of stainless steel.


Material stainless steel grades:

Also known as "marine grade" stainless steel due to its increased ability to resist saltwater corrosion compared to type 304. SS316 is often used for building nuclear reprocessing plants.

  • Type 304 has slightly lower strength than 302 due to its lower carbon content.
  • Type 316/316L is a molybdenum steel possessing improved resistance to pitting by solutions containing chlorides and other halides.
  • 310S Stainless Steel has excellent resistance to oxidation under constant temperatures to 2000°F.
  • 317L Stainless Steelis a molybdenum bearing austenitic chromium nickel steel similar to type 316, except the alloy content in 317L is somewhat higher.
  • 321/321H Stainless Steel is basic type 304 modified by adding titanium in an amount at least 5 times the carbon plus nitrogen contents.
  • 410 Stainless Steel is a martensitic stainless steel which is magnetic, resists corrosion in mild environents and has fairly good ductility.
  • Duplex 2507 (UNS S32750) is a super duplex stainless steel with 25% chromium, 4% molybdenum, and 7% nickel designed.
  • Duplex 2205 (UNS S31803), or Avesta Sheffield 2205 is a ferritic-austenitic stainless steel.
  • SUPER DUPLEX UNS S32760 - is a super duplex stainless steel, so-called due to its higher Chromium and Molybdenum content.

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Stainless steel pipes
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