Due To Its Controlled Carbon Content,. ASTM A312 SS 304H Seamless Pipes Provides Improved High Temperature Strength When Exposed To Temperatures Above 800 Degree F. ASTM A249 Stainless Steel 304H Welded Tubes Is An Austenitic Chromium-Nickel Steel Alloy And The Greater Carbon Content Delivers An Increased Tensile And Yield Strength. ASTM A358 Stainless Steel 304LN Welded Pipes Is A Low-Carbon, Higher Nickel And Nitrogen Alloyed Alternative To 304 With Improved Strength And Low-Temperature Toughness. SS 304LN Seamless Tubes Is Widely Used In The Following Applications: Heat Exchangers, Food Industry, Chemical Industry, And Petroleum Industry. SS 304N Seamless Pipes Is Essentially Non-Magnetic And Becomes Slightly Magnetic When Cold Worked.SS 304N Welded Tubes Is Often Used In The Following Applications: Valves, Cooling Coils, Oil Well Filter Screens, Evaporators, Pressure Vessels And More.