Shengtak New Materials Co., Ltd.(STK) is a Sino-Hongkong joint venture and established as a specialized manufacturer of high-end seamless tubes of carbon steel, alloy steel&stainless steel. Located in south part of China, Changzhou City, Jiangsu Province - the most developed economic circle of Yangtze River Delta and founded in 1990s, STK is also developing fast together with local economy and has been one of the biggest and best manufacturers of (rifled)seamless alloy steel tubes and seamless stainless steel tubes for high-pressure boilers,petroleum cracking&fertilizer equipment,and automotive industries in China.