Features of Rubber Welding Hose: 1.Material: Inner tube is made of NBR; Outer cover is made of EPDM; Or EPDM&NBR blend 2.Structure: 1. Interior lining +Strengthen lining +Exterior lining Surface is mill finish. Strengthen lining is high strength weaving fiber. 3.Color: Orange, black or client appoint. 4.Temperature: -25° C~70° C 5.Application:For gas soldering of prope etc.