Qingdao Sunray Boiler Equipment CO. , LTD (QSBC) was established in 2003. we are boiler professional repairing company, and we also product high quality tubes, such as h-fin, pin-tube of EGE and also provide other model ones, they are applied to use at marine and land. At the same time, we still supply kinds of tube materials which applied to standards and specifications of condensers QSBC owns professional technicians and welding workers. Each technician has professional experience of more than ten years QSBC has already got ABS, BV, DNV, LRS, NK, CCS production certificates. Also our products have been sold to Southeast Asia, the Middle East, Europe and other countries and regions. Moreover, we also provide products and services to ship owner companies such as COSCO, NYK, MSC, MOL, MACL and so on. Service as QSBC provides is as follows: 1, Changing tubes for Economizers 2, Changing tubes for Heat exchangers 3, Pressure vessel maintenance. 4, Manufacturing and providing h-fin, pin-tube, helical-fin-tube, double fin-tube, spiral tube & U-bend and other kinds of boiler tubes (DIN / JIS / GB / ASME) 5, Manufacturing kinds of boiler tubes for auxiliary fuel boiler 6, Supplying boiler spare parts, burner spare parts and a variety of instrumentation valves. 7, Boiler voyage repair and yard repair 8, Boiler inspection So if there are some problems, please answer us We are looking forward to your reply. Your choice, our best service! !