It also provides higher tensile strength at elevated temperature. In addition, SS316/316L material will reduce the tendency of the material to crack after welding. The nickel and molybdenum content provides great corrosion resistance in corrosive surroundings, such as salt water or chloride environments. The molybdenum content in stainless steel pipe is around 2.0% to 3.0%, while nickel content is around 11% to 14%. SS316/316L is a chromium-nickel-molybdenum bearing austenitic stainless steel. This allows it to form an invisible chrome-oxide layer by reaction with oxygen. Stainless steel pipes contain at least 10.5% of chromium. The minimum tensile strength for stainless steel pipes is 515 N/mm² while minimum yield strength at Rp 0.2% at 205 N/mm². The welding should be selected in accordance with DIN EN 1600 and DIN EN 12072 part 1 taking into account the type of application and the welding technique.Ĭhemical composition for ASTM A312 / ASME SA312, TP316/TP316L dual grade seamless stainless steel pipe is as per the table below. Pipes made of TP316 and TP316L are suitable for arc welding using usual techniques.
#4 inch stainless steel pipe manual#
There are three types of end connections for stainless steel pipes: plain end (PE), bevel end (BE), and threaded end (TE).Ī bend radius of 3x the external tube diameter, is recommended for the tube’s cold bending using tube benders or by manual hand bending. The unit SCH refers to the variation of thickness. The unit used in stainless steel pipes is Inch NB size range and thickness is in schedules (abbreviated as “SCH”). Stainless steel pipe is available in one finishing, namely annealed and pickled. SS316 pipes are most supplied in high performance fluids application for its great corrosion resistance and for its ability to withstand higher pressure. The material of stainless steel pipe is available in dual grade which is SS316 / 316L which allows dual usage of tubes. Seamless cold drawn stainless steel pipes are made in accordance to ASTM A312 TP316 / 316L standards.
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