div class=trans-pagebuttonPage 1button div class=trans-image a href=https:reader042fdocumentsinreader042viewer20220403215e57e6c0ba0ead19fa47bc5bhtml5page1jpg target=_blank amp-img class=trans-thumb alt=Page 1: · removed to assure accurate forming and rigid welding 5 Forming The flat strip steel is rolled into basic tubing 6 Welding Basic tubes are welded by a high frequency induction src=https:reader042fdocumentsinreader042viewer20220403215e57e6c0ba0ead19fa47bc5bhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=trans-pagebuttonPage 2button div class=trans-image a href=https:reader042fdocumentsinreader042viewer20220403215e57e6c0ba0ead19fa47bc5bhtml5page2jpg target=_blank amp-img class=trans-thumb alt=Page 2: · removed to assure accurate forming and rigid welding 5 Forming The flat strip steel is rolled into basic tubing 6 Welding Basic tubes are welded by a high frequency induction src=https:reader042fdocumentsinreader042viewer20220403215e57e6c0ba0ead19fa47bc5bhtml5thumbnails2jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=trans-pagebuttonPage 3button div class=trans-image a href=https:reader042fdocumentsinreader042viewer20220403215e57e6c0ba0ead19fa47bc5bhtml5page3jpg target=_blank amp-img class=trans-thumb alt=Page 3: · removed to assure accurate forming and rigid welding 5 Forming The flat strip steel is rolled into basic tubing 6 Welding Basic tubes are welded by a high frequency induction src=https:reader042fdocumentsinreader042viewer20220403215e57e6c0ba0ead19fa47bc5bhtml5thumbnails3jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=trans-pagebuttonPage 4button div class=trans-image a href=https:reader042fdocumentsinreader042viewer20220403215e57e6c0ba0ead19fa47bc5bhtml5page4jpg target=_blank amp-img class=trans-thumb alt=Page 4: · removed to assure accurate forming and rigid welding 5 Forming The flat strip steel is rolled into basic tubing 6 Welding Basic tubes are welded by a...