wire & tube china 2010
Wire/Tube China 2010 exhibition is scheduled  on 21-24 September, once again taking place at the Shanghai New International Exhibition Centre (SNIEC). The SNIEC is a world class venue with excellent facilities for exhibitors.
STAINLESS STEEL PIPE AND TUBING
Stainless steels are iron-based alloys usually containing at least 12%
chromium. Other elements, nickeI being the most Important, may be added in combination with chromium to obtain special properties.
Stainless steels are highly resistant to corrosive attack and to oxidation
at high temperatures. in general, resistance to corrosion and oxidation
increases progressively, though not proportionately, with the increase in
Stainless steel pipe and tubing are used for a variety of reasons: to resist
corrosion and oxidation, to resist high temperatures, for cleanliness
and low maintenance costs, and to maintain the purity of materials which come In contact with stainless. The inherent characteristics of stainless steel permits the design of thin wall piping systems without fear of early failure due to corrosion.
Type 304 stainless is the most widely used for general corrosive resistant tubing and pipe applications, it is used in chemical plants,
refineries, paper mills, and food processing industries. Type 304 has a
maximum carbon content of .08%. It is not recommended for use in the
temperature range between 800° F and 1650° F due to carbide precipitation at the grain boundaries which can result in inter-granular corrosion and early failure under certain conditions.
Type 304L. Is the same as 304 except that a .03% maximum carbon content .
Type 318 is much more resistant to pitting than otherchromium nickel alloys due to the addition of 2% to 3% molybdenum. it is particularly valuable wherever acids, brines, sulphur water, seawater or halogen salts are encountered. Type 316 is widely used in the sulphite paper industry and for manufacturing chemical plant apparatus, photographic equipment, and plastics.
Type 316L, like 304L, is held to a maximum carbon content of .03%. This
permits its use in welded assemblies without the need of final heat
treatment. It is used extensively for pipe assemblies with welded fitting..
Other fields where stainless steel pipe and tubing are used are: aviation,
electronics, automotive, cyrogenic, marine, air conditioning and heating,
medical, architectural and textiles.
ASTM A-312/ASME SA-312,
ASTM A-269/ASME SA-269
ASTM A-213/ASME SA-213