div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imagea href=https:reader042fdocumentsusreader042viewer20220226025b53629b7f8b9a1f648bb392html5page1jpg target=_blank img data-url=document-it-supersedes-bs-1139-11199-tube-with-a-wall-thickness-of-3-principle-changeshtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: · It supersedes BS 1139-11:199 tube with a wall thickness of 3 principle changes are containe National forewor BS EN 39:2001 ot for Resale e de Stassart 36 B-1050 Brussels loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader042fdocumentsusreader042viewer20220226025b53629b7f8b9a1f648bb392html5thumbnails1jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imagea href=https:reader042fdocumentsusreader042viewer20220226025b53629b7f8b9a1f648bb392html5page2jpg target=_blank img data-url=document-it-supersedes-bs-1139-11199-tube-with-a-wall-thickness-of-3-principle-changeshtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: · It supersedes BS 1139-11:199 tube with a wall thickness of 3 principle changes are containe National forewor BS EN 39:2001 ot for Resale e de Stassart 36 B-1050 Brussels loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader042fdocumentsusreader042viewer20220226025b53629b7f8b9a1f648bb392html5thumbnails2jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imagea href=https:reader042fdocumentsusreader042viewer20220226025b53629b7f8b9a1f648bb392html5page3jpg target=_blank img data-url=document-it-supersedes-bs-1139-11199-tube-with-a-wall-thickness-of-3-principle-changeshtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: · It supersedes BS 1139-11:199 tube with a...