Our high quality standard pattern 150lb rated stainless steel threaded fittings are manufactured to the highest standards. All stainless steel fittings are monitored by our quality control Personnel for strict compliance with applicable standards and specifications. These stainless steel pipe fittings are excellent for uses that involve chemicals or liquids that may be corrosive. Along with fighting corrosion, a stainless steel pipe fitting will prevent contamination making it useful to many professionals. 304 stainless steel is economically priced, chromium-nickel material that offers very good corrosion resistance. 316 stainless steel has higher nickel content and contains molybdenum for even better corrosion resistance.