RTJ Flange RTJ Flange description The ring joint flanges (RTJ) is used when a metal-to-metal seal between the mating flanges is required (which is a condition for high-pressure and high-temperature applications, i.e. above 700/800 C�°). A ring joint flange features a circular groove to accommodate a ring joint gasket (oval, or rectangular). RTJ flanges dimensions are covered in ASME B16.5 â?? which covers Pipe Flanges and Flanged Fittings for size NPS �½â?? to 24â??. Class 150, class 300, class 600, ... Name: RTJ Flange Size: 1 / 2" - 36" Material: All kinds of carbon steel,such as A105 / A234WPB / Q235 Pressure: Sch20 / 40 / 60, STD as need. Yihang RTJ Flange Type: carbon steel, welded Packaging: Wooden cases or as per customers requirement Application rang: Petroleum, chemical, power, gas, metallurgy, shipbuilding, construction, etc. Standard: ANSIB16.9, GBT12459 / 13401, SH3408 / 3409-96, ASME DIN JIS BS GB / T JB SH HG Others: 1. Special design available according to requirement 2. anti-corrosion and high-temperature resistant with black painting 3. Our company will be good and cheap products open an international market, meet your needs . Pipe fittings are various, the category of pipe fittings as follows: 1. Enlarge center pipe fitting. As required, or the end portion of the tube portion to expand a tubular member formed of various shapes; 2. Fittings with crimping and head.