{"id":829,"date":"2021-07-25T22:20:04","date_gmt":"2021-07-25T17:50:04","guid":{"rendered":"https:\/\/www.ramanpsr.com\/?p=829"},"modified":"2021-07-25T22:31:20","modified_gmt":"2021-07-25T18:01:20","slug":"welded","status":"publish","type":"post","link":"https:\/\/www.ramanpsr.com\/fa\/products\/welded\/","title":{"rendered":"Welded"},"content":{"rendered":"<p>[vc_row rtl_reverse=&#8221;yes&#8221;][vc_column width=&#8221;2\/3&#8243;][vc_custom_heading text=&#8221;Welded Tube and Pipe&#8221; font_container=&#8221;tag:h3|text_align:right&#8221;][vc_column_text]<\/p>\n<p dir=\"ltr\" style=\"text-align: left;\">Ever since it became possible to manufacture strip and plate, people have constantly tried to bend the material and connect its edges in order to manufacture tube and pipe. This led to the development of the oldest welding process, that of forge-welding, which goes back over 150 years.<br \/>\nIn 1825, the British ironware merchant James Whitehouse was granted a patent for the manufacture of welded pipe. The process consisted of forging individual metal plates over a mandrel to produce an open-seam pipe, and then heating the mating edges of the open seam and welding them by pressing them together mechanically in a draw bench.<br \/>\nThe technology evolved to the point where strip could be formed and welded in one pass in a welding furnace. The development of this butt-welding concept culminated in 1931 in the Fretz-Moon process devised by J. Moon, an American, and his German colleague Fretz.<\/p>\n<p>[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/3&#8243; text_align=&#8221;right&#8221;][vc_text_separator title=&#8221;\u0627\u0631\u062a\u0628\u0627\u0637 \u0628\u0627 \u0645\u0627&#8221; color=&#8221;custom&#8221; border_width=&#8221;10&#8243; css_animation=&#8221;bounceIn&#8221; css=&#8221;.vc_custom_1604345607602{padding-top: 15px !important;padding-bottom: 30px !important;}&#8221; accent_color=&#8221;#0088cc&#8221;][vc_tta_accordion][vc_tta_section i_icon_fontawesome=&#8221;fas fa-user-tie&#8221; add_icon=&#8221;true&#8221; title=&#8221;\u0645\u062f\u06cc\u0631 \u0628\u0627\u0632\u0631\u06af\u0627\u0646\u06cc&#8221; tab_id=&#8221;1604332461974-2fd3e027-6ead8218-ae60&#8243;][\/vc_tta_section][vc_tta_section i_icon_fontawesome=&#8221;fas fa-user-tie&#8221; add_icon=&#8221;true&#8221; title=&#8221;\u06a9\u0627\u0631\u0634\u0646\u0627\u0633 \u0641\u0631\u0648\u0634&#8221; 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09216683062<\/p>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\n\t\t\t<\/span>\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t<\/div><div class=\"member-slide\">\n\t\t<div class=\"member-item  align-center member-item-2\">\n\t\t\t<span class=\"thumb-info thumb-info-hide-wrapper-bg\">\n\n\t\t\t\t\t<span class=\"thumb-info-wrapper member-social-adv-main\">\n\t\t\t\t\t\t<span class=\"thumb-member-container\">\n\t\t\t\t\t\t\t<a class=\"text-decoration-none member-image\" href=\"https:\/\/www.ramanpsr.com\/fa\/team\/%d8%b4%d8%a7%d9%87%db%8c%d9%86-%d8%ac%d9%88%d8%a7%d9%86-%d8%a8%d8%ae%d8%aa\/\">\n\t\t\t\t\t\t\t\t<img class=\"img-responsive\" width=\"367\" height=\"367\" src=\"https:\/\/ramanpsr.com\/psr-co\/uploads\/2020\/11\/male-1-367x367.jpg\" alt=\"\" \/>\n\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"share-links post-share-advance member-share-advance\">\n\t\t\t\t\t\t\t\t\t\t<div class=\"post-share-advance-bg\">\n\t\t\t\t\t\t\t\t\t\t\t<span 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href=\"https:\/\/www.ramanpsr.com\/fa\/team\/%d8%b4%d8%a7%d9%87%db%8c%d9%86-%d8%ac%d9%88%d8%a7%d9%86-%d8%a8%d8%ae%d8%aa\/\">\n\t\t\t\t\t\t\t\t\t<h4 class=\"m-t-md m-b-none\">\u0634\u0627\u0647\u06cc\u0646 \u062c\u0648\u0627\u0646 \u0628\u062e\u062a<\/h4>\n\t\t\t\t\t\t\t\t\t\t\t<p class=\"m-b-sm color-body\">\u06a9\u0627\u0631\u0634\u0646\u0627\u0633 \u0641\u0631\u0648\u0634 Piping<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a><!-- Global link end -->\n\n\t\t\t\t\t\t<span class=\"thumb-info-caption\">\n\t\t\t\t\t\t\t\t\t<span class=\"thumb-info-caption-text p-t-none\">\n\t\t\t\t\t<p>\u062a\u0644\u0641\u0646: 02133903903<\/p>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\n\t\t\t<\/span>\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t<\/div>\t<\/div>\n\n\t\n\t<\/div>[\/vc_tta_section][\/vc_tta_accordion][\/vc_column][\/vc_row][vc_row css=&#8221;.vc_custom_1604332277038{padding-bottom: 20px !important;}&#8221;][vc_column][vc_column_text]<\/p>\n<p dir=\"ltr\" style=\"text-align: left;\">Welding lines employing this process are still operating successfully today in the manufacture of tube up to outside diameters of approx. 114 mm. Aside from this hot pressure welding technique, in which the strip is heated in a furnace to welding temperature, several other processes were devised by the American E. Thomson between the years 1886 and 1890 enabling metals to be electrically welded. The basis for this was the property discovered by James P. Joule whereby passing an electric current through a conductor causes it to heat up due to its electrical resistance.<br \/>\nIn 1898, the Standard Tool Company, USA, was granted a patent covering the application of electric resistance welding for tube and pipe manufacture. The production of electric resistance welded tube and pipe received a considerable boost in the United States, and much later in Germany, following the establishment of continuous hot strip rolling mills for the production of the bulk starting material necessary for large-scale manufacture. During the Second World War, an argon arc welding process was invented &#8211; again in the United States &#8211; which enabled the efficient welding of magnesium in aircraft construction.<br \/>\nAs a consequence of this development, various gas-shielded welding processes were developed, predominantly for the production of stainless steel tube.Following the far-reaching developments which have occurred in the energy sector in the last 30 years, and the resultant construction of large-capacity long-distance pipelines, the submerged-arc welding process has gained a position of pre-eminence for the welding of line pipe of diameters upward of approx. 500 mm.<\/p>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=&#8221;.vc_custom_1604332277038{padding-bottom: 20px !important;}&#8221;][vc_column][vc_text_separator title=&#8221;Electric Weld Pipe Mill&#8221; color=&#8221;custom&#8221; border_width=&#8221;10&#8243; css_animation=&#8221;bounceIn&#8221; element=&#8221;h3&#8243; css=&#8221;.vc_custom_1627235267071{padding-top: 15px !important;padding-bottom: 15px !important;}&#8221; accent_color=&#8221;#0088cc&#8221;][vc_column_text]<\/p>\n<p dir=\"ltr\" style=\"text-align: left;\"><span style=\"color: #000000;\">Steel strip in coil, which has been slit into the required width from wide strip, is shaped by a series of forming rolls into a multiple length shell. The longitudinal edges are continously joined by high frequency resistance\/induction welding.<\/span><br \/>\n<span style=\"color: #000000;\">The weld of multiple length shell is then head treated electrically, sized and cut to specified lengths by a flying cut-off machine. The cut pipe is straightened and squared at both ends.<\/span><br \/>\n<span style=\"color: #000000;\">These operations are followed by ultrasonic inspection or hydrostatic testing.<\/span><\/p>\n<p>[\/vc_column_text][vc_single_image image=&#8221;830&#8243; img_size=&#8221;full&#8221; label=&#8221;&#8221;][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[vc_row rtl_reverse=&#8221;yes&#8221;][vc_column width=&#8221;2\/3&#8243;][vc_custom_heading text=&#8221;Welded Tube and Pipe&#8221; font_container=&#8221;tag:h3|text_align:right&#8221;][vc_column_text] Ever since it became possible to manufacture strip and plate, people have constantly tried to bend the material and connect its edges in order to manufacture tube and pipe. This led to the development of the oldest welding process, that of forge-welding, which goes back over 150 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":839,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"cybocfi_hide_featured_image":"yes"},"categories":[13,10],"tags":[],"featured_image_src":{"landsacpe":["https:\/\/ramanpsr.com\/psr-co\/uploads\/2021\/07\/pipes_welded.jpg",596,335,false],"list":["https:\/\/ramanpsr.com\/psr-co\/uploads\/2021\/07\/pipes_welded-463x335.jpg",463,335,true],"medium":["https:\/\/ramanpsr.com\/psr-co\/uploads\/2021\/07\/pipes_welded-300x169.jpg",300,169,true],"full":["https:\/\/ramanpsr.com\/psr-co\/uploads\/2021\/07\/pipes_welded.jpg",596,335,false]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v19.5 (Yoast SEO v19.10) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Welded - \u067e\u062a\u0631\u0648 \u0635\u0646\u0639\u062a \u0631\u0627\u0645\u0627\u0646<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ramanpsr.com\/fa\/products\/welded\/\" \/>\n<meta property=\"og:locale\" content=\"fa_IR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Welded\" \/>\n<meta property=\"og:description\" content=\"[vc_row rtl_reverse=&#8221;yes&#8221;][vc_column width=&#8221;2\/3&#8243;][vc_custom_heading text=&#8221;Welded Tube and Pipe&#8221; font_container=&#8221;tag:h3|text_align:right&#8221;][vc_column_text] Ever since it became possible to manufacture strip and plate, people have constantly tried to bend the material and connect its edges in order to manufacture tube and pipe. 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