1.Produce good quantity seamless steel tube 2.Totally , Design depand on client 's require 3.Good Price in industry Welcome to Raymond Precision Steel Tube Co., Ltd Bright Annealing Seamless Steel Tube 1) Certificate: ISO9001:2000, TS16949.. 2) Spec.: DIN2391-94/C, 3) Steel Gr.: St35, St37, ST37.4, St45, St52, St52-3 4) O.D: 4mm-90mm. 5) W.T: 0.5mm-10mm 6) Max length:12m 7) Package: bundled and ...