Stellar Tube & Pipe Group has five subordinated enterprises, namley Zhejiang Tsingshan Steel Pipe Co.,ltd. Zhe Jiang Stellar Steel Pipe Co.,ltd. Wenzhou Ruipu Auto Door & Window Co.,ltd., Wenzhou Aoke Beer Co.,ltd.Its major products are stainless steel seamless pipes. The company successively passed ISO9001:2000 by LLOYD, got approval from DNV,BV, ABS,CCS, RINA and a series of certifications such as PED 97/23/CE1997.