Diaphragm Valve, Compression Fitting, Tube Fitting manufacturer / supplier in China, offering ANSI Welding Port Sizes: 1/4" , 1/2" , 3/8" , 3/4" , 1" Stainless Steel 316 Gland, Welding ANSI Port Sizes: 1/4" , 1/2" , 3/8" , 3/4" , 1" Pipe Fitting VCR Gland, Port Sizes: 1/4" , 1/2" , 3/8" , 3/4" , 1" Gland for Hydraulic Pipe Metal-to-Metal Hard Sealing Fitting and so on.