... .8,ST44,ST42,ST45ST52;Standard:DIN,1626,1629,17175,2448 2.ISO and SGS certi "strong horse with strong saddle". the ... of product technolog orientation. steel tube Seamless Pipe Typesteel tubeSize1/2"-32"Wall thicknessSch5-Sch160XXSStandardDIN,1626,1629,17175,2448MaterialST37/ST33/ST35 ...