Tieling Baotie Seamless Pipe factory Co.,Ltd started doing ASME SA335 P11/P12/P22 alloy pipes from 2006, and also the first mill start processing High temperature high pressure alloy seamless pipe in local market. Through the business, we guarantee every pipe we are shipping the customer all come with BV or TUV TPI certificate, and we can guarantee every PCS have been inspected by different parties at least three times to guarantee the safety of the usage.