DIN Products

DIN 17172 Grade StE 320-7 Carbon Steel Seamless Pipes

DIN 17172 Grade StE 320-7 Carbon Steel Seamless Pipes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17172 Grade StE 320-7 Carbon Steel Seamless Pipes

DIN 17172 Grade StE 360-7 Carbon Steel Seamless Pipes

DIN 17172 Grade StE 360-7 Carbon Steel Seamless Pipes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17172 Grade StE 360-7 Carbon Steel Seamless Pipes

DIN 2391-2 Grade St 35 Carbon Steel Seamless Tubes

DIN 2391-2 Grade St 35 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 2391-2 Grade St 35 Carbon Steel Seamless Tubes

DIN 2391-2 Grade St 45 Carbon Steel Seamless Tubes

DIN 2391-2 Grade St 45 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 2391-2 Grade St 45 Carbon Steel Seamless Tubes

DIN 2391-2 Grade St 52 Carbon Steel Seamless Tubes

DIN 2391-2 Grade St 52 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 2391-2 Grade St 52 Carbon Steel Seamless Tubes

DIN 17204 Grade 34CrMo4 Carbon Steel Seamless Tubes

DIN 17204 Grade 34CrMo4 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17204 Grade 34CrMo4 Carbon Steel Seamless Tubes

DIN 2609 Grade St 37-0 Carbon Steel Seamless Tubes

DIN 2609 Grade St 37-0 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 2609 Grade St 37-0 Carbon Steel Seamless Tubes

DIN 2609 Grade St 44-0 Carbon Steel Seamless Tubes

DIN 2609 Grade St 44-0 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 2609 Grade St 44-0 Carbon Steel Seamless Tubes

DIN 2609 Grade St 52-0 Carbon Steel Seamless Tubes

DIN 2609 Grade St 52-0 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 2609 Grade St 52-0 Carbon Steel Seamless Tubes

DIN 2609 Grade St 35-8 Carbon Steel Seamless Tubes

DIN 2609 Grade St 35-8 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 2609 Grade St 35-8 Carbon Steel Seamless Tubes

DIN 2609 Grade 15Mo3 Carbon Steel Seamless Tubes

DIN 2609 Grade 15Mo3 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 2609 Grade 15Mo3 Carbon Steel Seamless Tubes

DIN 2609 Grade TStE 285 Carbon Steel Seamless Tubes

DIN 2609 Grade TStE 285 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 2609 Grade TStE 285 Carbon Steel Seamless Tubes

DIN 2609 Grade TStE 355 Carbon Steel Seamless Tubes

DIN 2609 Grade TStE 355 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 2609 Grade TStE 355 Carbon Steel Seamless Tubes

DIN 2609 Grade WStE 355 Carbon Steel Seamless Tubes

DIN 2609 Grade WStE 355 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 2609 Grade WStE 355 Carbon Steel Seamless Tubes

DIN 17172 Grade StE 240-7 Carbon Steel Seamless Pipes

DIN 17172 Grade StE 240-7 Carbon Steel Seamless Pipes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17172 Grade StE 240-7 Carbon Steel Seamless Pipes

DIN 2609 Grade StE 290-7 Carbon Steel Seamless Tubes

DIN 2609 Grade StE 290-7 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 2609 Grade StE 290-7 Carbon Steel Seamless Tubes

DIN 17172 Grade StE 290-7 Carbon Steel Seamless Pipes

DIN 17172 Grade StE 290-7 Carbon Steel Seamless Pipes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17172 Grade StE 290-7 Carbon Steel Seamless Pipes

DIN 2609 Grade StE 360-7 Carbon Steel Seamless Tubes

DIN 2609 Grade StE 360-7 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 2609 Grade StE 360-7 Carbon Steel Seamless Tubes

DIN 17179 Grade WStE 255 Carbon Steel Seamless Tubes

DIN 17179 Grade WStE 255 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17179 Grade WStE 255 Carbon Steel Seamless Tubes

DIN 17179 Grade TStE 255 Carbon Steel Seamless Tubes

DIN 17179 Grade TStE 255 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17179 Grade TStE 255 Carbon Steel Seamless Tubes

DIN 17179 Grade EStE 255 Carbon Steel Seamless Tubes

DIN 17179 Grade EStE 255 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17179 Grade EStE 255 Carbon Steel Seamless Tubes

DIN 17179 Grade StE 285 Carbon Steel Seamless Tubes

DIN 17179 Grade StE 285 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17179 Grade StE 285 Carbon Steel Seamless Tubes

DIN 17179 Grade WStE 285 Carbon Steel Seamless Tubes

DIN 17179 Grade WStE 285 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17179 Grade WStE 285 Carbon Steel Seamless Tubes

DIN 17179 Grade TStE 285 Carbon Steel Seamless Tubes

DIN 17179 Grade TStE 285 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17179 Grade TStE 285 Carbon Steel Seamless Tubes

DIN 17179 Grade EStE 285 Carbon Steel Seamless Tubes

DIN 17179 Grade EStE 285 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17179 Grade EStE 285 Carbon Steel Seamless Tubes

DIN 17179 Grade StE 355 Carbon Steel Seamless Tubes

DIN 17179 Grade StE 355 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17179 Grade StE 355 Carbon Steel Seamless Tubes

DIN 17179 Grade WStE 355 Carbon Steel Seamless Tubes

DIN 17179 Grade WStE 355 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17179 Grade WStE 355 Carbon Steel Seamless Tubes

DIN 17179 Grade TStE 355 Carbon Steel Seamless Tubes

DIN 17179 Grade TStE 355 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17179 Grade TStE 355 Carbon Steel Seamless Tubes

DIN 17175 Grade 19Mn5 Carbon Steel Seamless Tubes

DIN 17175 Grade 19Mn5 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17175 Grade 19Mn5 Carbon Steel Seamless Tubes

DIN 17179 Grade EStE 355 Carbon Steel Seamless Tubes

DIN 17179 Grade EStE 355 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17179 Grade EStE 355 Carbon Steel Seamless Tubes

DIN 17175 Grade 15Mo3 Carbon Steel Seamless Tubes

DIN 17175 Grade 15Mo3 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17175 Grade 15Mo3 Carbon Steel Seamless Tubes

DIN 17173 Grade TT St 35N Carbon Steel Seamless Tubes

DIN 17173 Grade TT St 35N Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17173 Grade TT St 35N Carbon Steel Seamless Tubes

DIN 17175 Grade 13CrMo44 Carbon Steel Seamless Tubes

DIN 17175 Grade 13CrMo44 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17175 Grade 13CrMo44 Carbon Steel Seamless Tubes

DIN 2440 Grade St 33-2 Carbon Steel Seamless Tubes

DIN 2440 Grade St 33-2 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 2440 Grade St 33-2 Carbon Steel Seamless Tubes

DIN 17175 Grade 10CrMo9 10 Carbon Steel Seamless Tubes

DIN 17175 Grade 10CrMo9 10 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17175 Grade 10CrMo9 10 Carbon Steel Seamless Tubes

DIN 17172 Grade StE 210-7 Carbon Steel Seamless Pipes

DIN 17172 Grade StE 210-7 Carbon Steel Seamless Pipes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17172 Grade StE 210-7 Carbon Steel Seamless Pipes

DIN 17175 Grade 14MoV 6 3 Carbon Steel Seamless Tubes

DIN 17175 Grade 14MoV 6 3 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17175 Grade 14MoV 6 3 Carbon Steel Seamless Tubes

DIN 17179 Grade StE 255 Carbon Steel Seamless Tubes

DIN 17179 Grade StE 255 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17179 Grade StE 255 Carbon Steel Seamless Tubes

DIN 17204 Grade Cm55 Carbon Steel Seamless Tubes

DIN 17204 Grade Cm55 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17204 Grade Cm55 Carbon Steel Seamless Tubes

DIN 17210 Grade C10 Carbon Steel Seamless Tubes

DIN 17210 Grade C10 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17210 Grade C10 Carbon Steel Seamless Tubes

DIN 17210 Grade Ck10 Carbon Steel Seamless Tubes

DIN 17210 Grade Ck10 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17210 Grade Ck10 Carbon Steel Seamless Tubes

DIN 17210 Grade C15 Carbon Steel Seamless Tubes

DIN 17210 Grade C15 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17210 Grade C15 Carbon Steel Seamless Tubes

DIN 17210 Grade Ck15 Carbon Steel Seamless Tubes

DIN 17210 Grade Ck15 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17210 Grade Ck15 Carbon Steel Seamless Tubes

DIN 17210 Grade Cm15 Carbon Steel Seamless Tubes

DIN 17210 Grade Cm15 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17210 Grade Cm15 Carbon Steel Seamless Tubes

DIN 17204 Grade Ck22 Carbon Steel Seamless Tubes

DIN 17204 Grade Ck22 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17204 Grade Ck22 Carbon Steel Seamless Tubes

DIN 17210 Grade 16MnCr5 Carbon Steel Seamless Tubes

DIN 17210 Grade 16MnCr5 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17210 Grade 16MnCr5 Carbon Steel Seamless Tubes

DIN 17204 Grade Cm22 Carbon Steel Seamless Tubes

DIN 17204 Grade Cm22 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17204 Grade Cm22 Carbon Steel Seamless Tubes

DIN 17175 Grade St 35-8 Carbon Steel Seamless Tubes

DIN 17175 Grade St 35-8 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17175 Grade St 35-8 Carbon Steel Seamless Tubes

DIN 17204 Grade C35 Carbon Steel Seamless Tubes

DIN 17204 Grade C35 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17204 Grade C35 Carbon Steel Seamless Tubes

DIN 17175 Grade St 45-8 Carbon Steel Seamless Tubes

DIN 17175 Grade St 45-8 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17175 Grade St 45-8 Carbon Steel Seamless Tubes

DIN 17204 Grade Ck35 Carbon Steel Seamless Tubes

DIN 17204 Grade Ck35 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17204 Grade Ck35 Carbon Steel Seamless Tubes

DIN 17175 Grade 17Mn4 Carbon Steel Seamless Tubes

DIN 17175 Grade 17Mn4 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17175 Grade 17Mn4 Carbon Steel Seamless Tubes

DIN 17204 Grade Cm35 Carbon Steel Seamless Tubes

DIN 17204 Grade Cm35 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17204 Grade Cm35 Carbon Steel Seamless Tubes

DIN 17204 Grade C45 Carbon Steel Seamless Tubes

DIN 17204 Grade C45 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17204 Grade C45 Carbon Steel Seamless Tubes

DIN 17204 Grade Ck45 Carbon Steel Seamless Tubes

DIN 17204 Grade Ck45 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17204 Grade Ck45 Carbon Steel Seamless Tubes

DIN 17204 Grade Cm45 Carbon Steel Seamless Tubes

DIN 17204 Grade Cm45 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17204 Grade Cm45 Carbon Steel Seamless Tubes

DIN 17204 Grade C55 Carbon Steel Seamless Tubes

DIN 17204 Grade C55 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17204 Grade C55 Carbon Steel Seamless Tubes

DIN 17204 Grade Ck55 Carbon Steel Seamless Tubes

DIN 17204 Grade Ck55 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17204 Grade Ck55 Carbon Steel Seamless Tubes

DIN 1629 Grade St 44-0 Carbon Steel Seamless Tubes

DIN 1629 Grade St 44-0 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 1629 Grade St 44-0 Carbon Steel Seamless Tubes

DIN 1629 Grade St 52-0 Carbon Steel Seamless Tubes

DIN 1629 Grade St 52-0 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 1629 Grade St 52-0 Carbon Steel Seamless Tubes

DIN 17121 Grade RSt 37-2 Carbon Steel Seamless Tubes

DIN 17121 Grade RSt 37-2 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17121 Grade RSt 37-2 Carbon Steel Seamless Tubes

DIN 1630 Grade St 37-4 Carbon Steel Seamless Tubes

DIN 1630 Grade St 37-4 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 1630 Grade St 37-4 Carbon Steel Seamless Tubes

DIN 17121 Grade St 44-2 Carbon Steel Seamless Tubes

DIN 17121 Grade St 44-2 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17121 Grade St 44-2 Carbon Steel Seamless Tubes

DIN 1630 Grade St 44-4 Carbon Steel Seamless Tubes

DIN 1630 Grade St 44-4 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 1630 Grade St 44-4 Carbon Steel Seamless Tubes

DIN 17121 Grade St 44-3 Carbon Steel Seamless Tubes

DIN 17121 Grade St 44-3 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17121 Grade St 44-3 Carbon Steel Seamless Tubes

DIN 1630 Grade St 52-4 Carbon Steel Seamless Tubes

DIN 1630 Grade St 52-4 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 1630 Grade St 52-4 Carbon Steel Seamless Tubes

DIN 17121 Grade St 52-3 Carbon Steel Seamless Tubes

DIN 17121 Grade St 52-3 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17121 Grade St 52-3 Carbon Steel Seamless Tubes

DIN 17204 Grade C22 Carbon Steel Seamless Tubes

DIN 17204 Grade C22 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17204 Grade C22 Carbon Steel Seamless Tubes

DIN 17124 Grade StE 255 Carbon Steel Seamless Tubes

DIN 17124 Grade StE 255 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17124 Grade StE 255 Carbon Steel Seamless Tubes

DIN 17124 Grade TStE 255 Carbon Steel Seamless Tubes

DIN 17124 Grade TStE 255 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17124 Grade TStE 255 Carbon Steel Seamless Tubes

DIN 17124 Grade EStE 255 Carbon Steel Seamless Tubes

DIN 17124 Grade EStE 255 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17124 Grade EStE 255 Carbon Steel Seamless Tubes

DIN 17124 Grade StE 285 Carbon Steel Seamless Tubes

DIN 17124 Grade StE 285 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17124 Grade StE 285 Carbon Steel Seamless Tubes

DIN 17124 Grade TStE 285 Carbon Steel Seamless Tubes

DIN 17124 Grade TStE 285 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17124 Grade TStE 285 Carbon Steel Seamless Tubes

DIN 17124 Grade EStE 285 Carbon Steel Seamless Tubes

DIN 17124 Grade EStE 285 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17124 Grade EStE 285 Carbon Steel Seamless Tubes

DIN 17124 Grade StE 355 Carbon Steel Seamless Tubes

DIN 17124 Grade StE 355 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17124 Grade StE 355 Carbon Steel Seamless Tubes

DIN 17124 Grade TStE 355 Carbon Steel Seamless Tubes

DIN 17124 Grade TStE 355 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17124 Grade TStE 355 Carbon Steel Seamless Tubes

DIN 17124 Grade EStE 355 Carbon Steel Seamless Tubes

DIN 17124 Grade EStE 355 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 17124 Grade EStE 355 Carbon Steel Seamless Tubes

DIN 1629 Grade St 37-0 Carbon Steel Seamless Tubes

DIN 1629 Grade St 37-0 Carbon Steel Seamless Tubes

FerroPipe is a leading manufacturer, stockist and exporter of Carbon and Alloy Steel DIN 1629 Grade St 37-0 Carbon Steel Seamless Tubes