DN40 22 DN50 27.5 The electric couple fittings is also called the electric heat pipe joint. The hexagon flange is installed with a few holes in the middle, which is used for the connection and fixation of the electric heating product parts. Surface treatment: steel tube primary color, polishing, electroplating, sanitation grade, according to different customer requirements can be used in different surface treatment; Main applications: electric heating products. Connection mode: thread, different connection mode can be adopted according to different customer requirements. Any questions about the product are welcome to contact us online or via email. Due to the limitation of Email and network in China, if you need to add attachments or links, please send the pictures as attachments.