Built in 1990s, Changzhou Shengtak(STK) Seamless Steel Tube Co., Ltd. is a Sino-Hong Kong joint venture and a hi-tech enterprise specialized in manufacturing various kinds of seamless carbon steel, alloy steel, and stainless steel tubes.
With an annual output of 72000MT seamless steel tubes from 6mm-159mm,STK's products are classified as 3 types:
1. Rifled seamless tube of boiler tube material like SA210 A1,SA210 C,T1,T2,T5,T9,T11,T12,T22,T23,T91,T92 etc. These tubes are all supplied to our domestic large-scale boiler manufacturer like Shanghai Boiler Co.,Ltd, Dongfang Boiler Group Co.,Ltd,Harbin Boiler Company Limited.
2. Seamless alloy steel and stainless steel tubes of T1,T2,T22,T23,T91,T92, TP304,TP316L,TP321 and equivalent standards&material. These tubes are all supplied to Sinopec,CNPC,CNOOC.
3. Precision seamless stee tubes for auto-industry. These tubes are all supplied to domestic state-owned automotive factories like DFAW,FAW.

STK has successfully acted as an manufacturer and supplier of high-level seamless steel tubes in the past 3 years.

With systematic production equipment,inspection device,international qualification certificates, and continously introduction of advanced equipment&device in the year 2011, STK is now ready to step into the overseas market and work as a partner for overseas customers in pressure-vessel industry, petroleum cracking industry and automotive industry.