Raws li peb txhua tus paub, roj roj yog refined los ntawm roj av. Tus nqi roj av tau nce xyoo no, thiab tus nqi ntawm kev tsav tsheb tau nce siab dua. Nyob rau hauv cov txheej txheem ntawm extracting roj, ntau cov kav dej yuav tsum tau muab ntsia.

Nov yog saib ntawm lub raj xa dej:

Tubing (GB9948-88) yog seamless steel tube haum rau lub tshuab hluav taws xob, cov khoom siv hluav taws xob thiab cov kav dej hauv cov roj av refinery.

Hlau yeeb nkab rau geological drilling (YB235-70) yog siv rau cov tub ntxhais drilling los ntawm geological department, uas yuav muab faib ua laum yeeb nkab, laum dab tshos, tub ntxhais yeeb nkab, casing yeeb nkab thiab nag lossis daus yeeb nkab raws li nws siv.

Roj yeeb nkab yog ib hom hlau ntev nrog hollow seem thiab tsis muaj kev sib koom ua ke nyob ib puag ncig, thaum roj av tawg yeeb nkab yog hom kev lag luam hlau.

Tubing yog dav siv nyob rau hauv kev tsim khoom ntawm cov qauv thiab cov khoom siv xws li roj laum kav, tsheb tsav shafts, tsheb kauj vab ncej thiab steel scaffolding rau txav cov duab hauv kev tsim kho. Siv cov roj av tawg raj los tsim cov nplhaib nplhaib tuaj yeem txhim kho cov khoom siv, ua kom yooj yim ntawm cov txheej txheem tsim khoom, txuag cov khoom siv thiab ua lub sij hawm, xws li dov bearing nplhaib, lub tes tsho jack, thiab lwm yam, tau dav siv los tsim cov yeeb nkab steel. Petroleum cracking tube los yog ntau yam khoom siv riam phom uas tseem ceeb, lub thoob, chim thiab lwm yam rau roj av tawg raj los tsim. Petroleum cracking yeeb nkab tuaj yeem muab faib ua cov yeeb nkab puag ncig thiab cov yeeb nkab tshwj xeeb raws li cov duab ntawm qhov chaw hla. Txij li thaj tsam ntawm cov roj av tawg yeeb nkab yog qhov loj tshaj plaws nrog tib lub cheeb tsam, cov kua dej ntau tuaj yeem thauj tau nrog cov yeeb nkab ncig.

API 5CTroj casing yog siv los thauj cov roj, roj, roj, dej thiab lwm yam kua thiab roj.

Nws tuaj yeem muab faib ua seamless steel yeeb nkab thiab welded steel yeeb nkab. Welded steel yeeb nkab feem ntau yog hais txog ncaj seam steel yeeb nkab, thiab loj-caliber roj av casing feem ntau ncaj seam submerged arc vuam steel yeeb nkab. Lub teb chaws daim ntawv thov tseem ceeb ntawm cov khoom no yog muab faib rau hauv Middle East, Europe thiab America.npo 5ctcasing tuaj yeem muab faib ua R-1, R-2 thiab R-3 specifications nyob ntawm qhov ntev. Cov ntaub ntawv tseem ceeb yog B, X42, X46, X56, X65, X70 thiab lwm yam. Nyob rau hauv huab cua kub thiab kub siab ib puag ncig, roj av casing khoom pipeline muaj nws tus kheej tshwj xeeb zoo. Api5ct roj casing los ntawm raw cov ntaub ntawv rau cov khoom ua ntej xa cov flattening test, tensile test, impact test, tensile test thiab lwm yam kev xeem.