Class 150 socket weld fittings connect with medium-pressure (300-999 psi) pipe. Socket weld (SW) fittings attach by inserting pipe into the recessed area of the fitting. The pipe and the fitting are square cut for easy fillet welding and installation. Type 304 stainless steel, a chromium-nickel material, resists corrosion caused by water, heat, saltwater, acids, minerals, and peaty soils. Type 316 stainless steel has a higher nickel content than 304 stainless, plus molybdenum, for even greater corrosion resistance.

Class 3000 socket weld fittings connect with high-pressure (1000-3000 psi) pipe. Socket weld (SW) fittings attach by inserting pipe into the recessed area of the fitting. The pipe and the fitting are square cut for easy fillet welding and installation. Type 304 stainless steel, a chromium-nickel material, resists corrosion caused by water, heat, saltwater, acids, minerals, and peaty soils. Type 316 stainless steel has a higher nickel content than 304 stainless, plus molybdenum, for even greater corrosion resistance.

Class 6000 socket weld fittings connect with high-pressure (1000-3000 psi) pipe. Socket weld (SW) fittings attach by inserting pipe into the recessed area of the fitting. The pipe and the fitting are square cut for easy fillet welding and installation. Type 304 stainless steel, a chromium-nickel material, resists corrosion caused by water, heat, saltwater, acids, minerals, and peaty soils. Type 316 stainless steel has a higher nickel content than 304 stainless, plus molybdenum, for even greater corrosion resistance.