... in welded stainless steel tube online for many years in China.Our stainless steel tubes details as per below :1.Standard ... .5, 15.9, 17,18,19,20,22,23,28,29, 31.8 ,35,36,38,42,45, 47,48,50 ... “customer first”, we provide all customers with the excellent service Your Stainless steel pipe