2025-10-11T17:03:10+08:00 weekly 1.0 https://ne.octalpipe.com/ 2026-02-10T04:44:30+08:00 weekly 0.9 https://ne.octalpipe.com/company-honor 2026-02-10T04:49:15+08:00 weekly 0.9 https://ne.octalpipe.com/production-base 2026-02-10T04:57:23+08:00 weekly 0.9 https://ne.octalpipe.com/faq 2026-01-12T18:03:45+08:00 weekly 0.9 https://ne.octalpipe.com/after-sales 2026-02-10T05:04:45+08:00 weekly 0.9 https://ne.octalpipe.com/resources 2026-01-12T17:58:20+08:00 weekly 0.9 https://ne.octalpipe.com/stock 2026-02-14T22:44:41+08:00 weekly 0.9 https://ne.octalpipe.com/download 2026-02-14T22:44:42+08:00 weekly 0.9 https://ne.octalpipe.com/video 2026-02-14T22:45:00+08:00 weekly 0.9 https://ne.octalpipe.com/application 2026-01-12T18:01:46+08:00 weekly 0.9 https://ne.octalpipe.com/project 2026-02-10T05:33:03+08:00 weekly 0.9 https://ne.octalpipe.com/about-us 2026-02-10T05:16:56+08:00 weekly 0.9 https://ne.octalpipe.com/contact-us 2026-02-10T05:17:20+08:00 weekly 0.9 https://ne.octalpipe.com/inquiry 2026-02-10T05:17:20+08:00 weekly 0.9 https://ne.octalpipe.com/newslist-1 2026-02-10T05:17:21+08:00 weekly 0.9 https://ne.octalpipe.com/info/ 2026-02-10T05:03:29+08:00 weekly 0.9 https://ne.octalpipe.com/products 2026-02-10T00:59:23+08:00 weekly 1.0 https://ne.octalpipe.com/steel-pipe-fittings/ 2026-02-10T01:00:02+08:00 weekly 1.0 https://ne.octalpipe.com/octg-casing-and-tubing/ 2026-02-10T01:00:35+08:00 weekly 1.0 https://ne.octalpipe.com/steel-pipe-fittings/flange/ 2026-02-10T01:00:36+08:00 weekly 1.0 https://ne.octalpipe.com/valve/ 2026-02-10T01:00:43+08:00 weekly 1.0 https://ne.octalpipe.com/steel-pipe-fittings/pipe-fitting/ 2026-02-10T01:02:01+08:00 weekly 1.0 https://ne.octalpipe.com/steel-plates/ 2026-02-10T01:02:17+08:00 weekly 1.0 https://ne.octalpipe.com/sucker-rods/ 2026-02-10T01:13:30+08:00 weekly 1.0 https://ne.octalpipe.com/steel-pipe/ 2026-02-10T04:41:03+08:00 weekly 1.0 https://ne.octalpipe.com/coating-pipe/ 2026-02-10T04:48:45+08:00 weekly 1.0 https://ne.octalpipe.com/coating-pipe/external-coating/ 2026-02-10T04:49:02+08:00 weekly 1.0 https://ne.octalpipe.com/coating-pipe/internal-coating/ 2026-02-10T04:49:17+08:00 weekly 1.0 https://ne.octalpipe.com/coating-pipe/concrete-weight-coating/ 2026-02-10T04:50:01+08:00 weekly 1.0 https://ne.octalpipe.com/coating-pipe/galvanized-steel-pipe/ 2026-02-10T11:35:00+08:00 weekly 1.0 https://ne.octalpipe.com/drill-pipes/ 2026-02-14T09:00:51+08:00 weekly 0.9 https://ne.octalpipe.com/steel-pipe-production-lines/ 2026-03-13T09:17:58+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe/sour-service-special-applications.html 2026-03-13T10:21:18+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe/erw-welded-steel-pipe.html 2026-03-13T09:57:02+08:00 weekly 0.8 https://ne.octalpipe.com/steel-plates/steel-plate.html 2026-03-13T09:31:42+08:00 weekly 0.8 https://ne.octalpipe.com/steel-plates/steel-coil.html 2026-03-13T09:31:16+08:00 weekly 0.8 https://ne.octalpipe.com/sucker-rods/high-strength-sucker-rod.html 2026-03-13T10:33:25+08:00 weekly 0.8 https://ne.octalpipe.com/valve/api-6d-valve-and-pipeline-valve.html 2026-03-13T09:20:54+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe/lsaw-welded-steel-pipe.html 2026-03-13T09:57:10+08:00 weekly 0.8 https://ne.octalpipe.com/valve/wellhead-and-christmas-tree.html 2026-03-13T10:35:49+08:00 weekly 0.8 https://ne.octalpipe.com/sucker-rods/sucker-rod.html 2026-03-13T09:19:48+08:00 weekly 0.8 https://ne.octalpipe.com/octg-casing-and-tubing/casing.html 2026-03-13T09:17:56+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe/stainless-steel-pipe.html 2026-03-13T09:18:11+08:00 weekly 0.8 https://ne.octalpipe.com/octg-casing-and-tubing/tubing.html 2026-03-13T09:17:46+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe/carbon-steel-pipe.html 2026-03-13T09:17:52+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe/boiler-pipe.html 2026-03-13T09:19:10+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe/seamless-steel-pipe.html 2026-03-13T09:18:15+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe/api-5l-seamless-pipe.html 2026-03-13T09:17:45+08:00 weekly 0.8 https://ne.octalpipe.com/octg-casing-and-tubing/conductor-pipe.html 2026-03-13T09:17:47+08:00 weekly 0.8 https://ne.octalpipe.com/octg-casing-and-tubing/drilling-riser.html 2026-03-13T09:17:56+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe/chrome-molypipe-high-preformance-alloy-steel.html 2026-03-13T09:18:03+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe/cra-clad-and-lined-pipe.html 2026-03-13T09:18:08+08:00 weekly 0.8 https://ne.octalpipe.com/octg-casing-and-tubing/casing-and-tubing-api-5ct.html 2026-03-13T09:18:49+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe-production-lines/lsaw-steel-pipe-production-line.html 2026-03-13T09:19:16+08:00 weekly 0.8 https://ne.octalpipe.com/steel-plates/4100mm-heavy-and-wide-plate.html 2026-03-13T09:18:42+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe/pe-pipe.html 2026-03-13T09:19:52+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe/sanitary-pipe.html 2026-03-13T09:31:26+08:00 weekly 0.8 https://ne.octalpipe.com/steel-plates/round-bar.html 2026-03-13T09:18:57+08:00 weekly 0.8 https://ne.octalpipe.com/coating-pipe/fbe-internal-coating-for-octg-tubing-and.html 2026-03-13T10:18:47+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe-fittings/hammer-unions.html 2026-03-13T10:21:58+08:00 weekly 0.8 https://ne.octalpipe.com/octg-casing-and-tubing/insulated-tubing.html 2026-03-13T09:56:42+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe-production-lines/ssaw-pipe-production-line.html 2026-03-13T09:18:10+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe-production-lines/erw-pipe-production-line.html 2026-03-13T09:58:33+08:00 weekly 0.8 https://ne.octalpipe.com/steel-plates/china-steel-silo.html 2026-03-13T09:20:25+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe/ssaw-welded-steel-pipe.html 2026-03-13T09:18:50+08:00 weekly 0.8 https://ne.octalpipe.com/drill-pipes/api-5dp-drill-pipe.html 2026-03-13T09:58:55+08:00 weekly 0.8 https://ne.octalpipe.com/drill-pipes/drill-pipe.html 2026-03-13T09:57:01+08:00 weekly 0.8 https://ne.octalpipe.com/coating-pipe/external-coating/3lpp-coating-pipe.html 2026-03-13T09:56:56+08:00 weekly 0.8 https://ne.octalpipe.com/coating-pipe/external-coating/pu-insulated-pipe.html 2026-03-13T10:19:51+08:00 weekly 0.8 https://ne.octalpipe.com/coating-pipe/concrete-weight-coating/anode-installation.html 2026-03-13T09:57:04+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe-fittings/flange/socket-weld-flange.html 2026-03-13T10:21:15+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe-fittings/pipe-fitting/threaded-pipe-fittings.html 2026-03-13T09:19:53+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe-fittings/flange/weld-neck-flange.html 2026-03-13T09:18:30+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe-fittings/flange/threaded-flange.html 2026-03-13T09:57:10+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe-fittings/pipe-fitting/socket-weld-pipe-fittings.html 2026-03-13T10:19:22+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe-fittings/pipe-fitting/clad-pipe-fittings.html 2026-03-13T09:18:10+08:00 weekly 0.8 https://ne.octalpipe.com/steel-pipe-fittings/pipe-fitting/butt-weld-pipe-fittings.html 2026-03-13T09:20:10+08:00 weekly 0.8 https://ne.octalpipe.com/coating-pipe/external-coating/3lpe-coating-pipe.html 2026-03-13T09:17:42+08:00 weekly 0.8 https://ne.octalpipe.com/coating-pipe/internal-coating/internal-fbe-coating-pipe.html 2026-03-13T09:56:42+08:00 weekly 0.8 https://ne.octalpipe.com/coating-pipe/galvanized-steel-pipe/hot-dip-galvanizing.html 2026-03-13T09:57:18+08:00 weekly 0.8 https://ne.octalpipe.com/coating-pipe/external-coating/fbe-coating-pipe.html 2026-03-13T10:20:26+08:00 weekly 0.8 https://ne.octalpipe.com/coating-pipe/concrete-weight-coating/pipeline-concrete-weight-coating-cwc.html 2026-02-12T08:07:47+08:00 weekly 0.9 https://ne.octalpipe.com/newslist-17743316148429824-1 2026-02-12T08:08:16+08:00 weekly 0.8 https://ne.octalpipe.com/news/company-announcement-participation-17743316270310400.html 2026-02-14T10:39:19+08:00 weekly 0.8 https://ne.octalpipe.com/news/octal-pipe-updates-carbon-steel-pipe-inventory-17746296204665856.html 2026-02-14T10:39:26+08:00 weekly 0.8 https://ne.octalpipe.com/news/mexico-s-plan-to-impose-high-tariffs-on-chines-17746296297268224.html 2026-02-14T10:39:28+08:00 weekly 0.8 https://ne.octalpipe.com/news/company-announcement-participation-in-the-17746296308556800.html 2026-02-14T10:39:33+08:00 weekly 0.8 https://ne.octalpipe.com/news/company-announcement-participation-in-seaisi-17746296379319296.html 2026-02-14T10:39:54+08:00 weekly 0.8 https://ne.octalpipe.com/news/octal-pipe-accelerates-digital-transformation-17746296792704000.html 2026-02-15T01:56:36+08:00 weekly 0.8 https://ne.octalpipe.com/news/aktobe-neftekhim-2025-octal-pipe-exhibition-17747198886487040.html 2026-02-15T01:56:41+08:00 weekly 0.8 https://ne.octalpipe.com/news/shipment-to-mexico-octal-pipe-delivers-api-17747198935147520.html 2026-02-15T01:56:51+08:00 weekly 0.8 https://ne.octalpipe.com/news/octal-pipe-at-adipec-2025-advancing-material-17747199064712192.html 2026-02-15T01:56:30+08:00 weekly 0.8 https://ne.octalpipe.com/news/finished-product-spot-check-austenitic-stainl-17747199094842368.html 2026-02-24T09:54:41+08:00 weekly 0.8 https://ne.octalpipe.com/news/the-importance-of-oil-casing-and-tubing-in-oil-17760415554593792.html 2026-06-07T22:05:57+08:00 weekly 0.8 https://ne.octalpipe.com/news/how-to-use-a-sucker-rod-to-pump-oil-17760415558116352.html 2026-02-24T09:54:30+08:00 weekly 0.8 https://ne.octalpipe.com/news/how-to-calculate-steel-coil-weight-17760415564997632.html 2026-02-24T09:54:43+08:00 weekly 0.8 https://ne.octalpipe.com/news/steel-coil-characteristics-17760415567488000.html 2026-06-07T22:05:57+08:00 weekly 0.8 https://ne.octalpipe.com/news/applications-of-stainless-steel-pipe-17760415573582848.html 2026-02-24T09:54:45+08:00 weekly 0.8 https://ne.octalpipe.com/news/what-materials-are-needed-for-flange-manufactu-17760415598666752.html 2026-06-07T22:05:57+08:00 weekly 0.8 https://ne.octalpipe.com/news/valve-cleaning-procedures-17760419276448768.html 2026-02-24T09:58:13+08:00 weekly 0.8 https://ne.octalpipe.com/news/octal-pipe-new-year-celebration-employee-bir-17760419581486080.html 2026-02-24T09:59:03+08:00 weekly 0.8 https://ne.octalpipe.com/news/news-n-17760420943832064.html 2026-02-24T09:59:03+08:00 weekly 0.8 https://ne.octalpipe.com/news/news-o-17760420945945600.html 2026-02-24T09:59:04+08:00 weekly 0.8 https://ne.octalpipe.com/news/stainless-steel-pipe-composition-17760420959953920.html 2026-06-07T22:05:57+08:00 weekly 0.8 https://ne.octalpipe.com/news/the-functions-of-oil-casing-17760421131805696.html 2026-02-24T09:59:04+08:00 weekly 0.8 https://ne.octalpipe.com/news/flange-welding-quality-17760421139555328.html 2026-06-07T22:05:57+08:00 weekly 0.8 https://ne.octalpipe.com/news/uses-of-stainless-steel-pipes-17760421157299200.html 2026-06-07T22:05:57+08:00 weekly 0.8 https://ne.octalpipe.com/news/basic-structure-of-galvanized-pipe-17760421184234496.html 2026-06-07T22:05:57+08:00 weekly 0.8 https://ne.octalpipe.com/news/sucker-rod-usage-precautions-17760421195850752.html 2026-06-07T22:05:57+08:00 weekly 0.8 https://ne.octalpipe.com/news/applications-of-stainless-steel-pipes-17760421333705728.html 2026-06-07T22:05:57+08:00 weekly 0.8 https://ne.octalpipe.com/news/octal-pipe-director-kevin-wen-joined-anyang-g-17760424951571456.html 2026-06-07T22:05:57+08:00 weekly 0.8 https://ne.octalpipe.com/news/astm-carbon-steel-fittings-flanges-seamless-17760425086198784.html 2026-02-24T10:02:59+08:00 weekly 0.8 https://ne.octalpipe.com/news/theoretical-weight-of-stainless-steel-pipe-17760425468994560.html 2026-02-24T10:06:47+08:00 weekly 0.8 https://ne.octalpipe.com/news/after-export-licenses-return-steel-exports-mo-17760428765701120.html 2026-02-24T10:06:30+08:00 weekly 0.8 https://ne.octalpipe.com/news/news-e-17760429282780160.html 2026-06-07T22:05:57+08:00 weekly 0.8 https://ne.octalpipe.com/news/the-function-of-the-sucker-rod-17760429326869504.html 2026-02-24T10:09:28+08:00 weekly 0.8 https://ne.octalpipe.com/news/domestic-valve-status-17760432337052672.html 2026-06-07T22:05:57+08:00 weekly 0.8 https://ne.octalpipe.com/news/casing-delivery-to-halliburton-api-5ct-seamle-17760433099187200.html 2026-06-07T22:05:57+08:00 weekly 0.8 https://ne.octalpipe.com/news/valve-introduction-17760435072754688.html 2026-06-07T22:05:57+08:00 weekly 0.8 https://ne.octalpipe.com/news/key-features-of-drill-pipe-17760437894685696.html 2026-06-07T22:05:57+08:00 weekly 0.8 https://ne.octalpipe.com/news/drill-pipe-material-standards-17760462354621440.html 2026-02-12T07:14:05+08:00 weekly 0.9 https://ne.octalpipe.com/info/17743276350252032/ 2026-02-12T07:27:49+08:00 weekly 0.9 https://ne.octalpipe.com/info/17743276942550016/ 2025-12-26T17:05:56+08:00 weekly 0.8 https://ne.octalpipe.com/info/flange-connection-methods-17760435787113472.html 2025-12-25T16:59:08+08:00 weekly 0.8 https://ne.octalpipe.com/info/valve-installation-requirements-17760435785032704.html 2025-12-30T09:17:46+08:00 weekly 0.8 https://ne.octalpipe.com/info/how-to-make-pipe-connection-and-sealing-more-r-17760429288039424.html 2025-12-26T10:19:55+08:00 weekly 0.8 https://ne.octalpipe.com/info/drill-pipe-steel-grade-strength-17760428528378880.html 2026-02-24T10:03:24+08:00 weekly 0.8 https://ne.octalpipe.com/info/precision-304-and-316-stainless-steel-tubes-17760425423152128.html 2025-12-26T15:41:16+08:00 weekly 0.8 https://ne.octalpipe.com/info/applications-and-advantages-of-galvanized-pipe-17760424441848832.html 2025-12-25T15:47:36+08:00 weekly 0.8 https://ne.octalpipe.com/info/daily-valve-maintenance-17760419354354688.html 2025-12-29T09:49:34+08:00 weekly 0.8 https://ne.octalpipe.com/info/oil-casing-and-tubing-production-process-and-d-17760414218380288.html 2025-12-29T10:07:44+08:00 weekly 0.8 https://ne.octalpipe.com/info/composition-of-oil-casing-17760414140081152.html 2025-12-26T10:36:16+08:00 weekly 0.8 https://ne.octalpipe.com/info/how-the-sucker-rod-works-17760413870679040.html 2025-12-25T14:30:19+08:00 weekly 0.8 https://ne.octalpipe.com/info/characteristics-of-stainless-steel-pipe-17760413847626752.html 2025-12-26T11:57:31+08:00 weekly 0.8 https://ne.octalpipe.com/info/steel-coil-classification-17760413831242752.html 2025-12-25T14:31:51+08:00 weekly 0.8 https://ne.octalpipe.com/info/do-stainless-steel-pipes-expand-and-contract-w-17760413821920256.html 2025-12-25T14:31:08+08:00 weekly 0.8 https://ne.octalpipe.com/info/functions-of-each-layer-in-a-stainless-steel-p-17760413803389952.html 2025-12-25T14:20:00+08:00 weekly 0.8 https://ne.octalpipe.com/info/valve-operation-and-maintenance-17760413780091904.html 2026-02-24T09:52:42+08:00 weekly 0.8 https://ne.octalpipe.com/info/characteristics-of-stainless-steel-pipes-17760413733676032.html 2026-02-12T08:19:17+08:00 weekly 0.8 https://ne.octalpipe.com/info/astm-a335-p11-seamless-alloy-steel-pipe-for-hi-17743327678751744.html 2026-02-12T08:12:26+08:00 weekly 0.8 https://ne.octalpipe.com/info/316l-316ti-316hi-stainless-steel-pipe-17743320034305024.html 2026-02-12T08:07:28+08:00 weekly 0.8 https://ne.octalpipe.com/info/incoloy-825-nickel-alloy-825-uns-n08825-17743315931112448.html 2026-02-12T08:07:19+08:00 weekly 0.8 https://ne.octalpipe.com/info/astm-a335-p22-pipe-specification-chrome-moly-17743315733455872.html 2026-02-12T08:07:17+08:00 weekly 0.8 https://ne.octalpipe.com/info/inconel-625-nickel-alloy-625-uns-n06625-17743315663102976.html 2026-02-12T08:06:18+08:00 weekly 0.8 https://ne.octalpipe.com/info/astm-a335-p9-alloy-steel-pipe-17743314397586432.html 2026-02-12T08:04:20+08:00 weekly 0.8 https://ne.octalpipe.com/info/astm-a335-p5-seamless-alloy-steel-pipe-17743313512997888.html 2025-12-22T16:49:24+08:00 weekly 0.8 https://ne.octalpipe.com/info/astm-a213-t11-tubing-specification-17743281905656832.html 2025-12-22T17:29:15+08:00 weekly 0.8 https://ne.octalpipe.com/info/astm-a53-grade-a-and-b-steel-pipe-17743281470678016.html 2025-12-23T10:19:55+08:00 weekly 0.8 https://ne.octalpipe.com/info/astm-a333-grade-6-pipe-17743279806374912.html 2025-12-23T14:29:29+08:00 weekly 0.8 https://ne.octalpipe.com/info/astm-a500-grade-c-pipe-specification-17743279404688384.html 2025-12-24T11:30:51+08:00 weekly 0.8 https://ne.octalpipe.com/info/astm-a179-asme-sa179-heat-exchanger-tubes-17743278991238144.html 2025-12-24T10:52:46+08:00 weekly 0.8 https://ne.octalpipe.com/info/astm-a252-grade-3-pipe-pileastm-a252-grade-3-p-17743278891770880.html 2025-12-24T15:45:24+08:00 weekly 0.8 https://ne.octalpipe.com/info/seamless-steel-pipe-engineered-for-high-inte-17743278625285120.html 2025-12-25T15:52:37+08:00 weekly 0.8 https://ne.octalpipe.com/info/what-is-a-pipeline-understanding-the-lifeline-17743278170383360.html 2026-02-15T01:57:14+08:00 weekly 0.8 https://ne.octalpipe.com/info/cased-hole-vs-openhole-when-to-use-slotted-li-17747199364408320.html 2026-02-15T01:56:44+08:00 weekly 0.8 https://ne.octalpipe.com/info/astm-a672-pipe-standard-overview-17747199288681472.html 2025-12-18T14:38:03+08:00 weekly 0.8 https://ne.octalpipe.com/info/api-5l-x65-welded-line-pipe-17746299262411776.html 2026-02-14T10:42:48+08:00 weekly 0.8 https://ne.octalpipe.com/info/astm-a213-sa213-t9-t11-t22-t91-alloy-and-st-17746299177182208.html 2026-02-14T10:42:22+08:00 weekly 0.8 https://ne.octalpipe.com/info/astm-a312-stainless-steel-pipe-17746298916234240.html 2026-02-14T10:41:54+08:00 weekly 0.8 https://ne.octalpipe.com/info/astm-a213-t5-alloy-steel-tubing-17746298825384960.html 2026-02-14T10:42:00+08:00 weekly 0.8 https://ne.octalpipe.com/info/astm-a213-t9-alloy-steel-tubing-17746298745201664.html 2026-02-14T10:40:59+08:00 weekly 0.8 https://ne.octalpipe.com/info/astm-a106-grade-b-seamless-pipe-17746297902556160.html 2026-02-15T00:08:38+08:00 weekly 0.8 https://ne.octalpipe.com/info/how-do-you-choose-the-right-galvanized-steel-p-17747091142747136.html 2026-02-15T00:07:45+08:00 weekly 0.8 https://ne.octalpipe.com/info/when-do-you-need-premium-connections-17747090566095872.html 2026-02-14T10:56:49+08:00 weekly 0.8 https://ne.octalpipe.com/info/api-5l-x70-welded-line-pipe-specification-17746312841798656.html