316 stainless steel, 18Cr-12Ni-2.5Mo Due to the addition of Mo, its corrosion resistance, atmospheric corrosion resistance and high temperature strength are particularly good, and it can be used under harsh conditions; excellent work hardening (non-magnetic). Equipment used in seawater, chemical, dye, papermaking, oxalic acid, fertilizer and other production equipment; photography, food industry, coastal facilities, ropes, CD rods, bolts, nuts. Chemical composition of 316 stainless steel: C≤0.08, Si≤1.00, Mn≤2.00, P≤0.035, S≤0.03, Ni:10.0-14.0, Cr:16.0-18.5, Mo:2.0-3.0. Mechanical properties of 316 stainless steel: tensile strength (Mpa) 620 MIN, yield strength (Mpa) 310 MIN, elongation (%) 30 MIN, area reduction (%) 40 MIN, density of 316 stainless steel 8.03 g/cm3, this value is generally used for austenitic stainless steel.It just plugs up the unnecessary openings in the pipeline to play a sealing role. It is the same as blind plates, heads and pipe caps. Plugs, also known as pipe caps, caps, pipe covers, and blind heads, are pipe fittings installed on the external threads of the pipe ends to cover and plug the pipes. It is used to close the pipeline and has the same function as a pipe plug. It can be directly screwed on the pipe without the need for other pipe fittings. Plugs include convex plugs, cone shells, reducers, flat covers and tightening port designs.