Cov yeeb nkab roj av yog ib hom hlau ntev uas muaj qhov seem hollow thiab tsis muaj qhov sib koom ua ke, thaum cov yeeb nkab roj av tawg yog ib hom hlau seem kev lag luam. Lub luag haujlwm: siv dav hauv kev tsim cov khoom siv thiab cov khoom siv kho tshuab, xws li cov yeeb nkab roj av, lub cev tsav tsheb, lub tsheb kauj vab thiab cov hlau scaffolding siv hauv kev tsim kho, thiab lwm yam. Siv cov yeeb nkab roj av tawg los tsim cov khoom siv nplhaib tuaj yeem txhim kho tus nqi siv cov khoom siv, ua kom yooj yim rau cov txheej txheem tsim khoom, txuag cov khoom siv thiab lub sijhawm ua tiav, xws li lub nplhaib dov, lub tes tsho jack, thiab lwm yam, tau siv dav los tsim cov yeeb nkab hlau. Cov yeeb nkab roj av tawg lossis ntau yam riam phom ib txwm muaj, lub thoob, lub thoob thiab lwm yam khoom siv rau cov yeeb nkab roj av tawg los tsim. Cov yeeb nkab roj av tawg tuaj yeem faib ua cov yeeb nkab puag ncig thiab cov yeeb nkab zoo li tus kheej raws li cov duab ntawm thaj chaw hla. Txij li thaj chaw ntawm cov yeeb nkab roj av tawg yog qhov loj tshaj plaws nrog tib lub voj voog, ntau cov kua tuaj yeem thauj nrog cov yeeb nkab puag ncig.

API 5CT muab faib ua K55, N80, L80, P110 thiab lwm yam hlau qib.

Tubing J55 (37Mn5)

Lub plhaub J55 (37Mn5)

Cov yeeb nkab txuas J55 (37Mn5)

Cov yeeb nkab hlau roj av (GB / T9948-88) yog cov yeeb nkab hlau tsis muaj seamless uas tsim nyog rau cov raj cua sov, cov khoom hloov pauv cua sov thiab cov kav dej hauv cov chaw ua roj av.

Cov yeeb nkab hlau rau kev khawb av geological (YB235-70) yog siv rau kev khawb av los ntawm lub chaw haujlwm geological, uas tuaj yeem muab faib ua cov yeeb nkab laum, lub dab tshos laum, cov yeeb nkab tseem ceeb, cov yeeb nkab casing thiab cov yeeb nkab nag lossis daus raws li nws siv.

Cov qauv siv yeeb nkab hlau tsis muaj seamless

2. Cov yeeb nkab hlau uas sib txuas ua ke rau kev xa cov kua dej: GB8163-99; 3. Cov yeeb nkab hlau uas tsis sib txuas rau lub boiler: GB3087-1999; 4.

5, cov khoom siv chiv rau cov yeeb nkab hlau siab siab seamless: GB/T6479-1999 6, kev khawb av geological rau cov yeeb nkab hlau seamless: YB235-70 7, kev khawb roj rau cov yeeb nkab hlau seamless: YB528-65 8, kev tawg roj seamless yeeb nkab hlau: GB9948-88

Cov yeeb nkab hlau tsis muaj qhov sib txuas rau lub tsheb ib nrab ncej: GB3088-1999 11. Cov yeeb nkab hlau tsis muaj qhov sib txuas rau lub nkoj: GB5312-1999 12. Cov yeeb nkab hlau tsis muaj qhov sib txuas txias txias: GB/T3639-1999

13, txhua yam yeeb nkab seamless steel 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo

Tsis tas li ntawd xwb, kuj muaj GB/T17396-1998 (kub dov seamless steel raj rau hydraulic prop), GB3093-1986 (siab siab seamless steel raj rau diesel cav), GB/T3639-1983 (txias-kos lossis txias-kuav precision seamless steel raj), GB/T3094-1986 (txias-kos seamless steel raj tshwj xeeb-puab steel raj), GB/T8713-1988 (Precision sab hauv txoj kab uas hla seamless steel raj rau hydraulic thiab pneumatic lub tog raj kheej), GB13296-1991 (seamless stainless hlau raj rau boilers thiab cua sov exchangers), GB/T14975-1994 (seamless stainless hlau raj rau qauv), GB/T14976-1994 (seamless stainless hlau raj rau kua thauj) GB/T5035-1993 (tsheb) seamless steel raj rau bushing yeeb nkab), API SPEC5CT-1999 (specification rau lub thawv thiab lub raj), thiab lwm yam.