{"id":2313,"date":"2024-01-25T02:18:56","date_gmt":"2024-01-25T02:18:56","guid":{"rendered":"https:\/\/www.petroleumtube.com\/?p=2313"},"modified":"2024-01-25T02:18:56","modified_gmt":"2024-01-25T02:18:56","slug":"octg-api-n80-oil-casing-and-oil-well","status":"publish","type":"post","link":"https:\/\/www.petroleumtube.com\/es\/octg-api-n80-oil-casing-and-oil-well\/","title":{"rendered":"OCTG API N80 Oil Casing and Oil Well Drill Steel Pipe for Oil and Gas"},"content":{"rendered":"<h1 id=\"the-importance-of-octg-api-n80-oil-casing-in-oil-and-gas-industry-wpaicgheading\">The <a href=\"\/tag\/import\" target=\"_blank\"><strong>import<\/strong><\/a>ance of <a href=\"\/tag\/octg\" target=\"_blank\"><strong>octg<\/strong><\/a> <a href=\"\/tag\/api-n80\" target=\"_blank\"><strong><a href=\"\/tag\/api\" target=\"_blank\"><strong><strong>\u00a0API<\/strong><\/strong><\/a> <a href=\"\/tag\/n80\" target=\"_blank\"><strong><strong> N80<\/strong><\/strong><\/a><\/strong><\/a> <a href=\"\/tag\/oil-casing\" target=\"_blank\"><strong><a href=\"\/tag\/oil-casing-2\" target=\"_blank\"><strong><a href=\"\/tag\/oil\" target=\"_blank\"><strong>oil<\/strong><\/a> <a href=\"\/tag\/casing\" target=\"_blank\"><strong>casing<\/strong><\/a><\/strong><\/a><\/strong><\/a> in <a href=\"\/tag\/oil-and-gas\" target=\"_blank\"><strong>Oil and <a href=\"\/tag\/gas\" target=\"_blank\"><strong>gas<\/strong><\/a><\/strong><\/a> Industry<\/h1>The oil and gas industry is a <a href=\"\/tag\/vital\" target=\"_blank\"><strong>vital<\/strong><\/a> sector that plays a <a href=\"\/tag\/crucial\" target=\"_blank\"><strong>crucial<\/strong><\/a> role in powe<a href=\"\/tag\/ring\" target=\"_blank\"><strong>ring<\/strong><\/a> the world&#8217;s economy. It is responsible for extracting and refining the fossil fuels that are <a href=\"\/tag\/essential\" target=\"_blank\"><strong>essential<\/strong><\/a> for <a href=\"\/tag\/various\" target=\"_blank\"><strong>various<\/strong><\/a> industries and <a href=\"\/tag\/transportation\" target=\"_blank\"><strong>transportation<\/strong><\/a>. To <a href=\"\/tag\/ensure\" target=\"_blank\"><strong>ensure<\/strong><\/a> the smooth o<a href=\"\/tag\/per\" target=\"_blank\"><strong>per<\/strong><\/a>ation of oil and gas <a href=\"\/tag\/wells\" target=\"_blank\"><strong><a href=\"\/tag\/well\" target=\"_blank\"><strong>well<\/strong><\/a>s<\/strong><\/a>, the industry relies on a <a href=\"\/tag\/range\" target=\"_blank\"><strong>range<\/strong><\/a> of <a href=\"\/tag\/equipment\" target=\"_blank\"><strong>equipment<\/strong><\/a> and <a href=\"\/tag\/materials\" target=\"_blank\"><strong><a href=\"\/tag\/material\" target=\"_blank\"><strong>material<\/strong><\/a>s<\/strong><\/a>, including OCTG API N80 oil casing.\n\n<a href=\"\/tag\/octg-stands-for\" target=\"_blank\"><strong>octg <a href=\"\/tag\/stand\" target=\"_blank\"><strong>stand<\/strong><\/a>s for<\/strong><\/a> <a href=\"\/tag\/oil-country-tubular-goods\" target=\"_blank\"><strong><a href=\"\/tag\/oil-country-tubular\" target=\"_blank\"><strong>oil country <a href=\"\/tag\/tubular\" target=\"_blank\"><strong>tubular<\/strong><\/a><\/strong><\/a> goods<\/strong><\/a>, w<a href=\"\/tag\/hic\" target=\"_blank\"><strong>hic<\/strong><\/a>h refers to a family of <a href=\"\/tag\/seamless\" target=\"_blank\"><strong>seamless<\/strong><\/a> and <a href=\"\/tag\/welded\" target=\"_blank\"><strong><a href=\"\/tag\/weld\" target=\"_blank\"><strong>weld<\/strong><\/a>ed<\/strong><\/a> <a href=\"\/tag\/steel\" target=\"_blank\"><strong>steel<\/strong><\/a> <a href=\"\/tag\/pipe\" target=\"_blank\"><strong><strong> Pipe<\/strong><\/strong><\/a>s <a href=\"\/tag\/used\" target=\"_blank\"><strong>used<\/strong><\/a> in the oil and gas industry. <a href=\"\/tag\/these\" target=\"_blank\"><strong>these<\/strong><\/a> pipes are <a href=\"\/tag\/design\" target=\"_blank\"><strong>design<\/strong><\/a>ed to <a href=\"\/tag\/with\" target=\"_blank\"><strong>with<\/strong><\/a>stand the harsh conditions of <a href=\"\/tag\/drilling\" target=\"_blank\"><strong><a href=\"\/tag\/drill\" target=\"_blank\"><strong>drill<\/strong><\/a>ing<\/strong><\/a> and <a href=\"\/tag\/production\" target=\"_blank\"><strong>production<\/strong><\/a> <a href=\"\/tag\/operations\" target=\"_blank\"><strong>operations<\/strong><\/a>. One of the most <a href=\"\/tag\/common\" target=\"_blank\"><strong>common<\/strong><\/a>ly used <a href=\"\/tag\/grades\" target=\"_blank\"><strong><a href=\"\/tag\/grade\" target=\"_blank\"><strong>grade<\/strong><\/a>s<\/strong><\/a> of OCTG is API N80 oil casing.\n\nAPI N80 oil casing is a <a href=\"\/tag\/type\" target=\"_blank\"><strong>type<\/strong><\/a> of <a href=\"\/tag\/seamless-casing-pipe\" target=\"_blank\"><strong><a href=\"\/tag\/seamless-casing\" target=\"_blank\"><strong>seamless casing<\/strong><\/a> pipe<\/strong><\/a> that is <a href=\"\/tag\/made\" target=\"_blank\"><strong>made<\/strong><\/a> from N80 steel, a <a href=\"\/tag\/high\" target=\"_blank\"><strong>high<\/strong><\/a>&#8211;<a href=\"\/tag\/strength\" target=\"_blank\"><strong>strength<\/strong><\/a> <a href=\"\/tag\/carbon-steel\" target=\"_blank\"><strong><a href=\"\/tag\/carbon\" target=\"_blank\"><strong>carbon<\/strong><\/a> steel<\/strong><\/a> material. It is <a href=\"\/tag\/manufacture\" target=\"_blank\"><strong>manufacture<\/strong><\/a>d <a href=\"\/tag\/according\" target=\"_blank\"><strong>according<\/strong><\/a> to the <a href=\"\/tag\/american\" target=\"_blank\"><strong><a href=\"\/tag\/america\" target=\"_blank\"><strong>america<\/strong><\/a>n<\/strong><\/a> <a href=\"\/tag\/petroleum\" target=\"_blank\"><strong>petroleum<\/strong><\/a> <a href=\"\/tag\/institute\" target=\"_blank\"><strong>institute<\/strong><\/a> (API) <a href=\"\/tag\/specification\" target=\"_blank\"><strong><a href=\"\/tag\/specific\" target=\"_blank\"><strong>specific<\/strong><\/a>ation<\/strong><\/a> <strong> 5CT<\/strong>, which sets the <a href=\"\/tag\/standards\" target=\"_blank\"><strong><a href=\"\/tag\/standard\" target=\"_blank\"><strong>standard<\/strong><\/a>s<\/strong><\/a> for oil country <a href=\"\/tag\/tubular-goods\" target=\"_blank\"><strong>tubular goods<\/strong><\/a>. This specification ensures that the <a href=\"\/tag\/casing-pipes\" target=\"_blank\"><strong><a href=\"\/tag\/casing-pipe\" target=\"_blank\"><strong>casing pipe<\/strong><\/a>s<\/strong><\/a> meet the <a href=\"\/tag\/requirements\" target=\"_blank\"><strong><a href=\"\/tag\/requirement\" target=\"_blank\"><strong>requirement<\/strong><\/a>s<\/strong><\/a> for strength, <a href=\"\/tag\/durability\" target=\"_blank\"><strong>dur<a href=\"\/tag\/ability\" target=\"_blank\"><strong>ability<\/strong><\/a><\/strong><\/a>, and <a href=\"\/tag\/resistance\" target=\"_blank\"><strong>resistance<\/strong><\/a> to <a href=\"\/tag\/corrosion\" target=\"_blank\"><strong>corrosion<\/strong><\/a>.\n<a href=\"\/tag\/n80-casing\" target=\"_blank\"><strong>n80 casing<\/strong><\/a>\n\n<img decoding=\"async\" src=\"https:\/\/www.petroleumtube.com\/wp-content\/uploads\/2021\/12\/API-5CT-J55-Casing-12-12.jpg\" alt=\"alt-915\" class=\"wp-image-915\" id=\"i915\" \/>\nThe <a href=\"\/tag\/primary\" target=\"_blank\"><strong>primary<\/strong><\/a> function of API N80 oil casing is to provide <a href=\"\/tag\/structural\" target=\"_blank\"><strong>structural<\/strong><\/a> support to the well<a href=\"\/tag\/bore\" target=\"_blank\"><strong>bore<\/strong><\/a> and prevent the <a href=\"\/tag\/collapse\" target=\"_blank\"><strong>collapse<\/strong><\/a> of the hole during drilling and production operations. It is installed in the wellbore and cemented in place to create a <a href=\"\/tag\/stable\" target=\"_blank\"><strong>stable<\/strong><\/a> and secure pathway for the <a href=\"\/tag\/extraction\" target=\"_blank\"><strong>extraction<\/strong><\/a> of oil and gas. The casing also serves as a conduit for the drilling fluid, which is used to lubricate the drill bit and carry the <a href=\"\/tag\/cut\" target=\"_blank\"><strong>cut<\/strong><\/a>tings to the <a href=\"\/tag\/surface\" target=\"_blank\"><strong>surface<\/strong><\/a>.\n\nIn addition to its structural role, API N80 oil casing also plays a crucial role in well integrity and <a href=\"\/tag\/safety\" target=\"_blank\"><strong>safety<\/strong><\/a>. It acts as a barrier <a href=\"\/tag\/between\" target=\"_blank\"><strong>between<\/strong><\/a> the wellbore and the surrounding formations, preventing the migration of fluids and gases. This is <a href=\"\/tag\/particular\" target=\"_blank\"><strong>particular<\/strong><\/a>ly <a href=\"\/tag\/important\" target=\"_blank\"><strong>important<\/strong><\/a> in <a href=\"\/tag\/offshore\" target=\"_blank\"><strong>offshore<\/strong><\/a> drilling operations, where the <a href=\"\/tag\/risk\" target=\"_blank\"><strong>risk<\/strong><\/a> of b<a href=\"\/tag\/low\" target=\"_blank\"><strong>low<\/strong><\/a>outs and <a href=\"\/tag\/environmental\" target=\"_blank\"><strong>environmental<\/strong><\/a> damage is high. The casing provides a <a href=\"\/tag\/reliable\" target=\"_blank\"><strong>reliable<\/strong><\/a> and impermeable barrier that helps to prevent the release of hydrocarbons <a href=\"\/tag\/into\" target=\"_blank\"><strong>into<\/strong><\/a> the environment.\n\nAnother important aspect of API N80 oil casing is its resistance to corrosion. The casing is <a href=\"\/tag\/expose\" target=\"_blank\"><strong>expose<\/strong><\/a>d to various corrosive <a href=\"\/tag\/elements\" target=\"_blank\"><strong>elements<\/strong><\/a>, including drilling fluids, formation fluids, and the surrounding environment. Corrosion can weaken the casing and com<a href=\"\/tag\/promise\" target=\"_blank\"><strong>promise<\/strong><\/a> its integrity, <a href=\"\/tag\/leading\" target=\"_blank\"><strong><a href=\"\/tag\/lead\" target=\"_blank\"><strong>lead<\/strong><\/a>ing<\/strong><\/a> to <a href=\"\/tag\/cost\" target=\"_blank\"><strong>cost<\/strong><\/a>ly <a href=\"\/tag\/repair\" target=\"_blank\"><strong>Repair<\/strong><\/a>s and potential well <a href=\"\/tag\/fail\" target=\"_blank\"><strong>fail<\/strong><\/a>ures. API N80 oil casing is designed to resist corrosion and maintain its structural integrity over the life of the well.\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-embed-handler wp-block-embed-embed-handler wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"oil tube Wholesale-Price High-Quality high-quality Chinese,oil tube Chinese good manufacturer\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/3sstPGTV_Ig?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe>\n<\/div><\/figure>\nIn conclusion, API N80 oil casing is a critical component in the oil and gas industry. It provides structural support, well integrity, and safety, and resistance to corrosion. <a href=\"\/tag\/without\" target=\"_blank\"><strong>without<\/strong><\/a> this essential piece of equipment, drilling and production operations would be significantly more challenging and risky. The industry relies on the <a href=\"\/tag\/high-quality\" target=\"_blank\"><strong>high-<a href=\"\/tag\/quality\" target=\"_blank\"><strong>quality<\/strong><\/a><\/strong><\/a> and reliable <a href=\"\/tag\/performance\" target=\"_blank\"><strong>performance<\/strong><\/a> of API N80 oil casing to ensure the efficient and safe extraction of oil and gas.\n<figure class=\"wp-block-table\"><table border=\"1\" cellspacing=\"0\" cellpadding=\"10\"><tbody><tr><td colspan=\"10\"><strong>Tensile and <a href=\"\/tag\/hardness\" target=\"_blank\"><strong>hardness<\/strong><\/a> Requirements<\/strong><strong><\/strong><\/td><\/tr><tr><td><strong>Grade<\/strong><strong><\/strong><\/td><td><strong>&nbsp;<\/strong><\/td><td><strong>&nbsp;<\/strong><\/td><td colspan=\"2\"><strong><a href=\"\/tag\/yield\" target=\"_blank\"><strong>yield<\/strong><\/a> Strength MPa<\/strong><strong><\/strong><\/td><td><strong>Tensile <\/strong><strong>Strength<\/strong><strong><\/strong><\/td><td colspan=\"2\"><strong>Hardness <\/strong>a,c<strong><\/strong><\/td><td><strong>Specified <a href=\"\/tag\/wall-thickness\" target=\"_blank\"><strong><a href=\"\/tag\/wall\" target=\"_blank\"><strong>wall<\/strong><\/a> thickness<\/strong><\/a><\/strong><strong><\/strong><\/td><td><strong>Allowable Hardness <\/strong><strong>Variation <\/strong>b<strong><\/strong><\/td><\/tr><tr><td><strong>&nbsp;<\/strong><\/td><td><strong>Type<\/strong><strong><\/strong><\/td><td><strong>Total Elongation Under Load<\/strong><strong><\/strong><\/td><td colspan=\"2\"><strong>&nbsp;<\/strong><\/td><td><strong>min MPa<\/strong><strong><\/strong><\/td><td colspan=\"2\"><strong>max<\/strong><strong><\/strong><\/td><td><strong>&nbsp;<\/strong><\/td><td><strong>&nbsp;<\/strong><\/td><\/tr><tr><td><strong>&nbsp;<\/strong><\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td><strong>min<\/strong><strong><\/strong><\/td><td><strong>max<\/strong><strong><\/strong><\/td><td>&nbsp;<\/td><td><strong>HRC<\/strong><strong><\/strong><\/td><td><strong>HBW<\/strong><strong><\/strong><\/td><td><strong>mm<\/strong><strong><\/strong><\/td><td><strong>HRC<\/strong><strong><\/strong><\/td><\/tr><tr><td><strong>1<\/strong><strong><\/strong><\/td><td><strong>2<\/strong><strong><\/strong><\/td><td><strong>3<\/strong><strong><\/strong><\/td><td><strong>4<\/strong><strong><\/strong><\/td><td><strong>5<\/strong><strong><\/strong><\/td><td><strong>6<\/strong><strong><\/strong><\/td><td><strong>7<\/strong><strong><\/strong><\/td><td><strong>8<\/strong><strong><\/strong><\/td><td><strong>9<\/strong><strong><\/strong><\/td><td><strong>10<\/strong><strong><\/strong><\/td><\/tr><tr><td><a href=\"\/tag\/h40\" target=\"_blank\"><strong>h40<\/strong><\/a><\/td><td>\u2014<\/td><td>0.5<\/td><td>276<\/td><td>552<\/td><td>414<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr><tr><td><a href=\"\/tag\/j55\" target=\"_blank\"><strong><strong> J55<\/strong><\/strong><\/a><\/td><td>\u2014<\/td><td>0.5<\/td><td>379<\/td><td>552<\/td><td>517<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr><tr><td><a href=\"\/tag\/k55\" target=\"_blank\"><strong>K55<\/strong><\/a><\/td><td>\u2014<\/td><td>0.5<\/td><td>379<\/td><td>552<\/td><td>655<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr><tr><td>N80<\/td><td>1<\/td><td>0.5<\/td><td>552<\/td><td>758<\/td><td>689<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr><tr><td>N80<\/td><td>Q<\/td><td>0.5<\/td><td>552<\/td><td>758<\/td><td>689<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr><tr><td><strong> R95<\/strong><\/td><td>\u2014<\/td><td>0.5<\/td><td>655<\/td><td>758<\/td><td>724<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr><tr><td><a href=\"\/tag\/l80\" target=\"_blank\"><strong><strong> L80<\/strong><\/strong><\/a> L80<\/td><td>1<\/td><td>0.5<\/td><td>552<\/td><td>655<\/td><td>655<\/td><td>23<\/td><td>241<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr><tr><td>L80<\/td><td>9Cr 13Cr<\/td><td>0.5<\/td><td>552<\/td><td>655<\/td><td>655<\/td><td>23<\/td><td>241<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr><tr><td>&nbsp;<\/td><td>&nbsp;<\/td><td>0.5<\/td><td>552<\/td><td>655<\/td><td>655<\/td><td>23<\/td><td>241<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr><tr><td><strong> C90<\/strong><\/td><td>1<\/td><td>0.5<\/td><td>621<\/td><td>724<\/td><td>689<\/td><td>25.4<\/td><td>255<\/td><td>\u00a312.70<\/td><td>3<\/td><\/tr><tr><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>12.71 to 19.04<\/td><td>4<\/td><\/tr><tr><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>19.05 to 25.39<\/td><td>5<\/td><\/tr><tr><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>\u00b3&nbsp;25.40<\/td><td>6<\/td><\/tr><tr><td><a href=\"\/tag\/t95\" target=\"_blank\"><strong>T95<\/strong><\/a><\/td><td>1<\/td><td>0.5<\/td><td>655<\/td><td>758<\/td><td>724<\/td><td>25.4<\/td><td>255<\/td><td>\u00a312.70<\/td><td>3<\/td><\/tr><tr><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>12.71 to 19.04<\/td><td>4<\/td><\/tr><tr><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>19.05 to 25.39<\/td><td>5<\/td><\/tr><tr><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>\u00b3&nbsp;25.40<\/td><td>6<\/td><\/tr><tr><td>C110<\/td><td>\u2014<\/td><td>0.7<\/td><td>758<\/td><td>828<\/td><td>793<\/td><td>30<\/td><td>286<\/td><td>\u00a312.70<\/td><td>3<\/td><\/tr><tr><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>12.71 to 19.04<\/td><td>4<\/td><\/tr><tr><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>19.05 to 25.39<\/td><td>5<\/td><\/tr><tr><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>\u00b3&nbsp;25.40<\/td><td>6<\/td><\/tr><tr><td><a href=\"\/tag\/p110\" target=\"_blank\"><strong><strong> P110<\/strong><\/strong><\/a><\/td><td>\u2014<\/td><td>0.6<\/td><td>758<\/td><td>965<\/td><td>862<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><\/tr><tr><td><a href=\"\/tag\/q125\" target=\"_blank\"><strong>Q125<\/strong><\/a><\/td><td>1<\/td><td>0.65<\/td><td>862<\/td><td>1034<\/td><td>931<\/td><td>b<\/td><td>\u2014<\/td><td>\u00a312.70<\/td><td>3<\/td><\/tr><tr><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>12.71 to 19.04 19.05<\/td><td>4<\/td><\/tr><tr><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>&nbsp;<\/td><td>5<\/td><\/tr><tr><td colspan=\"10\">a In case of dispute, laboratory Rockwell C hardness <a href=\"\/tag\/testing\" target=\"_blank\"><strong>testing<\/strong><\/a> shall be used as the referee <a href=\"\/tag\/method\" target=\"_blank\"><strong>method<\/strong><\/a>.<\/td><\/tr><tr><td colspan=\"10\">b No hardness <a href=\"\/tag\/limits\" target=\"_blank\"><strong>limits<\/strong><\/a> are specified, but the maximum variation is restricted as a <a href=\"\/tag\/manufacturing\" target=\"_blank\"><strong>manufacturing<\/strong><\/a> <a href=\"\/tag\/control\" target=\"_blank\"><strong>control<\/strong><\/a> in <a href=\"\/tag\/accordance\" target=\"_blank\"><strong>accor<a href=\"\/tag\/dan\" target=\"_blank\"><strong>dan<\/strong><\/a>ce<\/strong><\/a> with 7.8 and 7.9.<\/td><\/tr><tr><td colspan=\"10\">c For <a href=\"\/tag\/through-wall\" target=\"_blank\"><strong>through-wall<\/strong><\/a> hardness <a href=\"\/tag\/tests\" target=\"_blank\"><strong>tests<\/strong><\/a> of Grades L80 (all <a href=\"\/tag\/types\" target=\"_blank\"><strong>types<\/strong><\/a>), C90, T95 and C110, the requirements stated in HRC scale are for maximum mean hardness number.<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"<p>The <a href=\"\/tag\/import\" target=\"_blank\"><strong>import<\/strong><\/a>ance of <a href=\"\/tag\/octg\" target=\"_blank\"><strong>octg<\/strong><\/a> \u00a0<a href=\"\/tag\/api-n80\" target=\"_blank\"><strong><a href=\"\/tag\/api\" target=\"_blank\"><strong><strong>\u00a0API<\/strong><\/strong><\/a> <a href=\"\/tag\/n80\" target=\"_blank\"><strong><strong> N80<\/strong><\/strong><\/a><\/strong><\/a> <a href=\"\/tag\/oil-casing\" target=\"_blank\"><strong><a href=\"\/tag\/oil-casing-2\" target=\"_blank\"><strong><a href=\"\/tag\/oil\" target=\"_blank\"><strong>oil<\/strong><\/a> <a href=\"\/tag\/casing\" target=\"_blank\"><strong>casing<\/strong><\/a><\/strong><\/a><\/strong><\/a> in <a href=\"\/tag\/oil-and-gas\" target=\"_blank\"><strong>Oil and <a href=\"\/tag\/gas\" target=\"_blank\"><strong>gas<\/strong><\/a><\/strong><\/a> Industry The oil and gas industry is a&#8230;<\/p>\n","protected":false},"author":1,"featured_media":1814,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[1],"tags":[293,265,264,238,173,143,99,81,73,51,53],"translation":{"provider":"WPGlobus","version":"2.12.0","language":"es","enabled_languages":["en","es","de","fr","ru","it","pl","hi","th","ko","sv"],"languages":{"en":{"title":true,"content":true,"excerpt":false},"es":{"title":false,"content":false,"excerpt":false},"de":{"title":false,"content":false,"excerpt":false},"fr":{"title":false,"content":false,"excerpt":false},"ru":{"title":false,"content":false,"excerpt":false},"it":{"title":false,"content":false,"excerpt":false},"pl":{"title":false,"content":false,"excerpt":false},"hi":{"title":false,"content":false,"excerpt":false},"th":{"title":false,"content":false,"excerpt":false},"ko":{"title":false,"content":false,"excerpt":false},"sv":{"title":false,"content":false,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/www.petroleumtube.com\/es\/wp-json\/wp\/v2\/posts\/2313"}],"collection":[{"href":"https:\/\/www.petroleumtube.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.petroleumtube.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.petroleumtube.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.petroleumtube.com\/es\/wp-json\/wp\/v2\/comments?post=2313"}],"version-history":[{"count":0,"href":"https:\/\/www.petroleumtube.com\/es\/wp-json\/wp\/v2\/posts\/2313\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.petroleumtube.com\/es\/wp-json\/wp\/v2\/media\/1814"}],"wp:attachment":[{"href":"https:\/\/www.petroleumtube.com\/es\/wp-json\/wp\/v2\/media?parent=2313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.petroleumtube.com\/es\/wp-json\/wp\/v2\/categories?post=2313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.petroleumtube.com\/es\/wp-json\/wp\/v2\/tags?post=2313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}