Product Name: Bite Type Fittings Union Model NO.: RS-Steel Connection Type: Socket Cross-Section Shape: Round Medium: Liquid Diameter: <50mm Standard: GB Material: Stainless Steel MPa Classfication: High Pressure Piping Temperature Classification: Medium Temperature Piping Trademark: RS Graphite Transport Package: Shipping Specification: Standard Origin: Jiangsu, China Product Description Also known as parker.It is popular because of its unique assembly convenience (only two wrenches are needed). After nearly 80 years of development, EO plant has always maintained the leading position of ferrule type pipe joint technology. Parker pipe joint is the most widely used pipe joint in the world.