Yanshan is a major manufacturer of pipe fittings, based in China. We offer various types of products such as JIS pipe fittings, API 5L steel pipe, ERW steel pipe and so on. Our products are high quality and competitively priced. Our full chain of manufacturing plate weld flange, galvanized steel pipe can be completed in China, even in one city. Our lower manufacturing cost can save your purchasing cost. A more detailed description of our product is shown on the page.