2025-10-11T17:03:09+08:00 weekly 1.0 https://ko.octgsteels.com/ 2025-09-23T16:10:51+08:00 weekly 0.9 https://ko.octgsteels.com/company-honor 2025-09-25T15:34:49+08:00 weekly 0.9 https://ko.octgsteels.com/production-base 2025-09-29T11:52:58+08:00 weekly 0.9 https://ko.octgsteels.com/resources 2026-04-02T17:49:54+08:00 weekly 0.9 https://ko.octgsteels.com/stock 2025-09-26T09:39:17+08:00 weekly 0.9 https://ko.octgsteels.com/faq 2026-04-02T17:49:54+08:00 weekly 0.9 https://ko.octgsteels.com/download 2026-01-12T18:06:03+08:00 weekly 0.9 https://ko.octgsteels.com/video 2025-11-17T18:13:11+08:00 weekly 0.9 https://ko.octgsteels.com/after-sales 2025-12-01T11:10:24+08:00 weekly 0.9 https://ko.octgsteels.com/application 2025-12-02T17:14:29+08:00 weekly 0.9 https://ko.octgsteels.com/project 2025-10-13T11:56:14+08:00 weekly 0.9 https://ko.octgsteels.com/about-us 2026-01-29T16:40:38+08:00 weekly 0.9 https://ko.octgsteels.com/contact-us 2026-01-29T16:40:38+08:00 weekly 0.9 https://ko.octgsteels.com/inquiry 2025-10-13T11:56:14+08:00 weekly 0.9 https://ko.octgsteels.com/newslist-1 2025-10-13T11:56:15+08:00 weekly 0.9 https://ko.octgsteels.com/info/ 2025-10-13T11:57:07+08:00 weekly 0.9 https://ko.octgsteels.com/products 2025-10-16T02:32:25+08:00 weekly 0.9 https://ko.octgsteels.com/blog/ 2025-10-13T11:29:40+08:00 weekly 0.9 https://ko.octgsteels.com/steel-pipe/ 2025-10-13T11:29:40+08:00 weekly 0.9 https://ko.octgsteels.com/octg-casing-and-tubing/ 2025-10-13T11:29:40+08:00 weekly 0.9 https://ko.octgsteels.com/steel-pipe-fittings/ 2025-10-13T11:29:41+08:00 weekly 0.9 https://ko.octgsteels.com/valve/ 2025-10-13T11:29:41+08:00 weekly 0.9 https://ko.octgsteels.com/steel-pipe-fittings/pipe-fitting/ 2025-10-13T11:29:41+08:00 weekly 0.9 https://ko.octgsteels.com/steel-pipe-fittings/flange/ 2025-10-13T11:55:10+08:00 weekly 0.9 https://ko.octgsteels.com/steel-plates/ 2025-10-13T11:55:10+08:00 weekly 0.9 https://ko.octgsteels.com/coating-pipe/ 2025-10-13T11:55:11+08:00 weekly 0.9 https://ko.octgsteels.com/sucker-rods/ 2025-10-13T11:55:11+08:00 weekly 0.9 https://ko.octgsteels.com/drill-pipes/ 2025-10-13T11:55:17+08:00 weekly 0.9 https://ko.octgsteels.com/coating-pipe/external-coating/ 2025-10-13T11:55:17+08:00 weekly 0.9 https://ko.octgsteels.com/coating-pipe/internal-coating/ 2025-10-13T11:55:17+08:00 weekly 0.9 https://ko.octgsteels.com/coating-pipe/galvanized-steel-pipe/ 2025-10-13T11:55:21+08:00 weekly 0.9 https://ko.octgsteels.com/coating-pipe/concrete-weight-coating/ 2025-12-08T16:04:30+08:00 weekly 0.9 https://ko.octgsteels.com/steel-pipe-production-lines/ 2026-03-13T21:25:21+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe/carbon-steel-pipe.html 2026-03-13T22:06:33+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe/ssaw-welded-steel-pipe.html 2026-03-13T22:06:46+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe/boiler-pipe.html 2026-03-13T22:06:49+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe/erw-welded-steel-pipe.html 2026-03-13T21:25:51+08:00 weekly 0.8 https://ko.octgsteels.com/sucker-rods/high-strength-sucker-rod.html 2026-03-13T21:25:22+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe/api-5l-seamless-pipe.html 2026-03-13T21:25:49+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe/seamless-steel-pipe.html 2026-03-13T21:25:28+08:00 weekly 0.8 https://ko.octgsteels.com/octg-casing-and-tubing/casing.html 2026-03-13T22:46:29+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe/lsaw-welded-steel-pipe.html 2026-03-13T21:26:19+08:00 weekly 0.8 https://ko.octgsteels.com/steel-plates/steel-coil.html 2026-03-13T21:25:37+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe/stainless-steel-pipe.html 2026-03-13T21:26:56+08:00 weekly 0.8 https://ko.octgsteels.com/valve/api-6d-valve-and-pipeline-valve.html 2026-03-13T21:25:21+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe/sour-service-special-applications.html 2026-03-13T21:25:19+08:00 weekly 0.8 https://ko.octgsteels.com/steel-plates/steel-plate.html 2026-03-13T21:26:58+08:00 weekly 0.8 https://ko.octgsteels.com/drill-pipes/drill-pipe.html 2026-03-13T21:25:18+08:00 weekly 0.8 https://ko.octgsteels.com/drill-pipes/api-5dp-drill-pipe.html 2026-03-13T21:25:53+08:00 weekly 0.8 https://ko.octgsteels.com/valve/wellhead-and-christmas-tree.html 2026-03-13T21:25:47+08:00 weekly 0.8 https://ko.octgsteels.com/octg-casing-and-tubing/tubing.html 2026-03-13T21:26:05+08:00 weekly 0.8 https://ko.octgsteels.com/sucker-rods/sucker-rod.html 2026-03-13T21:25:51+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe/chrome-molypipe-high-preformance-alloy-steel.html 2026-03-13T21:25:40+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe/cra-clad-and-lined-pipe.html 2026-03-13T21:26:03+08:00 weekly 0.8 https://ko.octgsteels.com/octg-casing-and-tubing/conductor-pipe.html 2026-03-13T21:26:09+08:00 weekly 0.8 https://ko.octgsteels.com/octg-casing-and-tubing/drilling-riser.html 2026-03-13T21:26:35+08:00 weekly 0.8 https://ko.octgsteels.com/octg-casing-and-tubing/casing-and-tubing-api-5ct.html 2026-03-13T21:25:50+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe/sanitary-pipe.html 2026-03-13T21:26:40+08:00 weekly 0.8 https://ko.octgsteels.com/coating-pipe/fbe-internal-coating-for-octg-tubing-and.html 2026-03-13T21:26:17+08:00 weekly 0.8 https://ko.octgsteels.com/steel-plates/4100mm-heavy-and-wide-plate.html 2026-03-13T21:25:45+08:00 weekly 0.8 https://ko.octgsteels.com/steel-plates/round-bar.html 2026-03-13T21:25:46+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe-production-lines/lsaw-steel-pipe-production-line.html 2026-03-13T21:26:09+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe/pe-pipe.html 2026-03-13T21:25:25+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe-fittings/hammer-unions.html 2026-03-13T21:27:17+08:00 weekly 0.8 https://ko.octgsteels.com/octg-casing-and-tubing/insulated-tubing.html 2026-03-13T21:25:39+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe-production-lines/ssaw-pipe-production-line.html 2026-03-13T21:27:33+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe-production-lines/erw-pipe-production-line.html 2026-03-13T21:28:22+08:00 weekly 0.8 https://ko.octgsteels.com/steel-plates/china-steel-silo.html 2026-03-13T21:26:18+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe-fittings/pipe-fitting/butt-weld-pipe-fittings.html 2026-03-13T21:25:16+08:00 weekly 0.8 https://ko.octgsteels.com/coating-pipe/internal-coating/internal-fbe-coating-pipe.html 2026-03-13T21:26:06+08:00 weekly 0.8 https://ko.octgsteels.com/coating-pipe/external-coating/pu-insulated-pipe.html 2026-03-13T21:25:31+08:00 weekly 0.8 https://ko.octgsteels.com/coating-pipe/concrete-weight-coating/pipeline-concrete-weight-coating-cwc.html 2026-03-13T21:26:27+08:00 weekly 0.8 https://ko.octgsteels.com/coating-pipe/external-coating/3lpp-coating-pipe.html 2026-03-13T21:26:31+08:00 weekly 0.8 https://ko.octgsteels.com/coating-pipe/external-coating/fbe-coating-pipe.html 2026-03-13T21:25:26+08:00 weekly 0.8 https://ko.octgsteels.com/coating-pipe/concrete-weight-coating/anode-installation.html 2026-03-13T22:07:03+08:00 weekly 0.8 https://ko.octgsteels.com/coating-pipe/external-coating/3lpe-coating-pipe.html 2026-03-13T21:25:14+08:00 weekly 0.8 https://ko.octgsteels.com/coating-pipe/galvanized-steel-pipe/hot-dip-galvanizing.html 2026-03-13T21:25:09+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe-fittings/flange/socket-weld-flange.html 2026-03-13T21:26:31+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe-fittings/flange/weld-neck-flange.html 2026-03-13T21:25:26+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe-fittings/pipe-fitting/socket-weld-pipe-fittings.html 2026-03-13T21:25:13+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe-fittings/flange/threaded-flange.html 2026-03-13T21:25:52+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe-fittings/pipe-fitting/threaded-pipe-fittings.html 2026-03-13T21:27:21+08:00 weekly 0.8 https://ko.octgsteels.com/steel-pipe-fittings/pipe-fitting/clad-pipe-fittings.html 2025-11-06T12:43:15+08:00 weekly 0.9 https://ko.octgsteels.com/newslist-17604841207063552-1 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/news-o-17570852228064256.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/news-n-17570852318635008.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/news-e-17570852328940544.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/theoretical-weight-of-stainless-steel-pipe-17570852337574912.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/stainless-steel-pipe-composition-17570852345799680.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/how-to-calculate-steel-coil-weight-17570852356269056.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/uses-of-stainless-steel-pipes-17570852357874688.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/the-importance-of-oil-casing-and-tubing-in-oil-17570852358267904.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/flange-welding-quality-17570852360184832.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/applications-of-stainless-steel-pipe-17570852361708544.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/valve-introduction-17570852362101760.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/the-functions-of-oil-casing-17570852363428864.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/basic-structure-of-galvanized-pipe-17570852365476864.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/the-function-of-the-sucker-rod-17570852366066688.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/key-features-of-drill-pipe-17570852371620864.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/steel-coil-characteristics-17570852373095424.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/how-to-use-a-sucker-rod-to-pump-oil-17570852376552448.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/sucker-rod-usage-precautions-17570852382663680.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/what-materials-are-needed-for-flange-manufactu-17570852386169856.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/domestic-valve-status-17570852389299200.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/valve-cleaning-procedures-17570852394411008.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/drill-pipe-material-standards-17570852402684928.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/applications-of-stainless-steel-pipes-17570852438811648.html 2025-11-06T12:43:23+08:00 weekly 0.8 https://ko.octgsteels.com/news/company-announcement-participation-17604841312527360.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/octal-pipe-updates-carbon-steel-pipe-inventory-17650369781588992.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/company-announcement-participation-in-seaisi-17650369857020928.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/mexico-s-plan-to-impose-high-tariffs-on-chines-17650369861968896.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/octal-pipe-accelerates-digital-transformation-17650369891689472.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/company-announcement-participation-in-the-17650370041521152.html 2025-12-25T01:19:23+08:00 weekly 0.8 https://ko.octgsteels.com/news/aktobe-neftekhim-2025-octal-pipe-exhibition-17673548890694656.html 2025-12-25T01:19:24+08:00 weekly 0.8 https://ko.octgsteels.com/news/finished-product-spot-check-austenitic-stainl-17673548924544000.html 2025-12-25T01:19:25+08:00 weekly 0.8 https://ko.octgsteels.com/news/shipment-to-mexico-octal-pipe-delivers-api-17673548928771072.html 2025-12-25T01:19:27+08:00 weekly 0.8 https://ko.octgsteels.com/news/octal-pipe-at-adipec-2025-advancing-material-17673549038347264.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/octal-pipe-new-year-celebration-employee-bir-17760446186005504.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/octal-pipe-director-kevin-wen-joined-anyang-g-17760446280623104.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/astm-carbon-steel-fittings-flanges-seamless-17760446319338496.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/after-export-licenses-return-steel-exports-mo-17760446555907072.html 2026-04-02T17:49:54+08:00 weekly 0.8 https://ko.octgsteels.com/news/casing-delivery-to-halliburton-api-5ct-seamle-17760446758806528.html 2025-11-06T12:43:08+08:00 weekly 0.9 https://ko.octgsteels.com/info/17604841151521792/ 2025-11-06T12:43:11+08:00 weekly 0.9 https://ko.octgsteels.com/info/17604841188353024/ 2025-12-29T17:01:16+08:00 weekly 0.8 https://ko.octgsteels.com/info/precision-304-and-316-stainless-steel-tubes-17760485306196992.html 2025-12-30T09:17:46+08:00 weekly 0.8 https://ko.octgsteels.com/info/how-to-make-pipe-connection-and-sealing-more-r-17760446317388800.html 2025-12-25T01:19:30+08:00 weekly 0.8 https://ko.octgsteels.com/info/cased-hole-vs-openhole-when-to-use-slotted-li-17673549166027776.html 2025-12-25T01:19:27+08:00 weekly 0.8 https://ko.octgsteels.com/info/astm-a672-pipe-standard-overview-17673549073441792.html 2025-12-16T18:16:27+08:00 weekly 0.8 https://ko.octgsteels.com/info/how-do-you-choose-the-right-galvanized-steel-p-17662802278310912.html 2025-12-16T15:27:06+08:00 weekly 0.8 https://ko.octgsteels.com/info/when-do-you-need-premium-connections-17662766261183488.html 2025-11-10T15:55:19+08:00 weekly 0.8 https://ko.octgsteels.com/info/api-5l-x65-welded-line-pipe-17650370558354432.html 2025-11-10T16:00:20+08:00 weekly 0.8 https://ko.octgsteels.com/info/api-5l-x70-welded-line-pipe-specification-17650370506892288.html 2025-11-18T18:08:19+08:00 weekly 0.8 https://ko.octgsteels.com/info/astm-a213-sa213-t9-t11-t22-t91-alloy-and-st-17650370376426496.html 2025-11-19T15:49:36+08:00 weekly 0.8 https://ko.octgsteels.com/info/astm-a312-stainless-steel-pipe-17650370374116352.html 2025-11-10T10:32:50+08:00 weekly 0.8 https://ko.octgsteels.com/info/astm-a106-grade-b-seamless-pipe-17650370272371712.html 2025-11-19T14:42:46+08:00 weekly 0.8 https://ko.octgsteels.com/info/astm-a213-t9-alloy-steel-tubing-17650370157192192.html 2025-11-19T15:24:42+08:00 weekly 0.8 https://ko.octgsteels.com/info/astm-a213-t5-alloy-steel-tubing-17650370130142208.html 2025-11-06T12:43:36+08:00 weekly 0.8 https://ko.octgsteels.com/info/incoloy-825-nickel-alloy-825-uns-n08825-17604841769853952.html 2025-11-06T12:43:35+08:00 weekly 0.8 https://ko.octgsteels.com/info/astm-a335-p11-seamless-alloy-steel-pipe-for-hi-17604841720423424.html 2025-11-06T12:43:51+08:00 weekly 0.8 https://ko.octgsteels.com/info/316l-316ti-316hi-stainless-steel-pipe-17604841705874432.html 2025-11-06T12:43:31+08:00 weekly 0.8 https://ko.octgsteels.com/info/astm-a335-p22-pipe-specification-chrome-moly-17604841701991424.html 2025-11-06T12:43:42+08:00 weekly 0.8 https://ko.octgsteels.com/info/astm-a213-t11-tubing-specification-17604841680282624.html 2025-11-06T12:43:32+08:00 weekly 0.8 https://ko.octgsteels.com/info/astm-a335-p5-seamless-alloy-steel-pipe-17604841631933440.html 2025-11-06T12:43:34+08:00 weekly 0.8 https://ko.octgsteels.com/info/astm-a335-p9-alloy-steel-pipe-17604841624724480.html 2025-11-06T12:43:27+08:00 weekly 0.8 https://ko.octgsteels.com/info/astm-a53-grade-a-and-b-steel-pipe-17604841564759040.html 2025-11-06T12:43:32+08:00 weekly 0.8 https://ko.octgsteels.com/info/astm-a179-asme-sa179-heat-exchanger-tubes-17604841462932480.html 2025-11-06T12:43:33+08:00 weekly 0.8 https://ko.octgsteels.com/info/inconel-625-nickel-alloy-625-uns-n06625-17604841453347840.html 2025-11-06T12:43:22+08:00 weekly 0.8 https://ko.octgsteels.com/info/astm-a252-grade-3-pipe-pileastm-a252-grade-3-p-17604841450873856.html 2025-11-06T12:43:19+08:00 weekly 0.8 https://ko.octgsteels.com/info/what-is-a-pipeline-understanding-the-lifeline-17604841388876800.html 2025-11-06T12:43:22+08:00 weekly 0.8 https://ko.octgsteels.com/info/astm-a500-grade-c-pipe-specification-17604841383961600.html 2025-11-06T12:43:26+08:00 weekly 0.8 https://ko.octgsteels.com/info/seamless-steel-pipe-engineered-for-high-inte-17604841382683648.html 2025-11-06T12:43:25+08:00 weekly 0.8 https://ko.octgsteels.com/info/astm-a333-grade-6-pipe-17604841367217152.html 2025-10-11T06:18:26+08:00 weekly 0.8 https://ko.octgsteels.com/info/daily-valve-maintenance-17570852681147392.html 2025-10-11T06:18:26+08:00 weekly 0.8 https://ko.octgsteels.com/info/valve-operation-and-maintenance-17570852674298880.html 2025-10-11T06:18:26+08:00 weekly 0.8 https://ko.octgsteels.com/info/drill-pipe-steel-grade-strength-17570852641481728.html 2025-10-11T06:18:26+08:00 weekly 0.8 https://ko.octgsteels.com/info/valve-installation-requirements-17570852637926400.html 2025-10-11T06:18:26+08:00 weekly 0.8 https://ko.octgsteels.com/info/how-the-sucker-rod-works-17570852634092544.html 2025-10-11T06:18:26+08:00 weekly 0.8 https://ko.octgsteels.com/info/steel-coil-classification-17570852633846784.html 2025-10-11T06:18:26+08:00 weekly 0.8 https://ko.octgsteels.com/info/oil-casing-and-tubing-production-process-and-d-17570852616643584.html 2025-10-11T06:18:26+08:00 weekly 0.8 https://ko.octgsteels.com/info/applications-and-advantages-of-galvanized-pipe-17570852613039104.html 2025-10-11T06:18:26+08:00 weekly 0.8 https://ko.octgsteels.com/info/flange-connection-methods-17570852605109248.html 2025-10-11T06:18:26+08:00 weekly 0.8 https://ko.octgsteels.com/info/composition-of-oil-casing-17570852590330880.html 2025-10-11T06:18:26+08:00 weekly 0.8 https://ko.octgsteels.com/info/characteristics-of-stainless-steel-pipes-17570852577223680.html 2025-10-11T06:18:26+08:00 weekly 0.8 https://ko.octgsteels.com/info/characteristics-of-stainless-steel-pipe-17570852568245248.html 2025-10-11T06:18:26+08:00 weekly 0.8 https://ko.octgsteels.com/info/functions-of-each-layer-in-a-stainless-steel-p-17570852557480960.html 2025-10-11T06:18:26+08:00 weekly 0.8 https://ko.octgsteels.com/info/do-stainless-steel-pipes-expand-and-contract-w-17570852542555136.html 2025-10-14T10:01:21+08:00 weekly 0.8 https://ko.octgsteels.com/blog/what-is-the-yield-strength-of-a-steel-plate-1417699.html 2025-10-14T10:01:57+08:00 weekly 0.8 https://ko.octgsteels.com/blog/how-to-store-socket-weld-flanges-to-prevent-corrosion-1417718.html 2025-10-14T10:02:25+08:00 weekly 0.8 https://ko.octgsteels.com/blog/what-are-the-environmental-impacts-of-using-socket-weld-flanges-1417735.html