Changzhou Chengxin Metal Products Co.,Ltd,built in 1998, is a specialized manufacturer of cold drawn and hydraulic cold drawn mechanical tubings,precision tubes,hydraulic cylinder tubes, seamless square and rectangular tubes, bimetal composite tubes,as well as machining service provider.Changzhou Chengxin Metal Products Co., Ltd. is always devoting ourselves to provide high quality steel tubes for our customers. Simultaneously, to satisfy customer's diverfied requirements, we do a strategic investment on machining facilities, which not only enlarged our production capacity based on tubes, but also enables us to provide customized machining service for our customers.Right now, our products are mainly used but not restricted to construction machinery and equipment, oil&gas industry, engineering industry, textile industry, exploring industry, chemical industry,automobile industry,etc.Since 2011 when we started international trade, we have exported mechanical tubings and precision tubes,honed or skived&roller burnished tubes and machined products like machined+deep hole bored hollow bars, cylinder barrels,and externally machined+deep hole bored seamless tubes to many countries all over the world like Brazil,Chile,India,Indonesia,Iran,Korea,Russia, USA,Vietnam,etc.