1. Dab tsi yog seamless carbon steel yeeb nkab?
Seamless carbon steel yeeb nkab yog cov khoom siv tubular tsim los ntawm cov khoom siv puag ncig steel billet. Lub billet yog rhuab thiab pierced los ntawm nws qhov chaw los tsim ib tug hollow plhaub, uas yog ces elongated thiab dov mus cuag lub Desired txoj kab uas hla, phab ntsa thickness, thiab ntev. Nws tsis muaj welded seam.
2. Dab tsi yog qhov zoo ntawm seamless yeeb nkab tshaj welded yeeb nkab?
Lub ntsiab kom zoo dua yog nws homogeneous qauv thiab niaj hnub lub zog nyob ib ncig ntawm tag nrho cov ncig. Qhov tsis muaj vuam seam tshem tawm qhov muaj peev xwm ntawm qhov tsis ua haujlwm, ua rau nws muaj zog thiab txhim khu kev qha rau siab - siab, siab - kub, thiab kev siv tseem ceeb.
3. Dab tsi yog cov txheej txheem tsim khoom rau cov kav dej seamless?
Ob qhov txheej txheem feem ntau yog:
Mandrel Mill Txheej Txheem:Zoo tagnrho rau cov kab me me. Ib tug mandrel yog muab tso rau hauv lub plhaub hollow los tswj lub puab txoj kab uas hla thaum nws dov.
Plug Mill Txheej Txheem:Feem ntau siv rau cov kab uas loj dua. Lub ntsaws yog siv los hloov lub mandrel ntev thaum lub sij hawm elongation txheej txheem.
4. Cov qib carbon steel feem ntau siv rau cov kav dej seamless?
Cov qib feem ntau suav nrog ASTM A106 Qib B (rau siab -kev pabcuam kub), ASTM A53 Qib B (rau lub hom phiaj), thiab API 5L Qib B (rau kev thauj mus los hauv raj). Cov qib no muaj qhov sib npaug zoo ntawm lub zog, ductility, thiab weldability.
5. Kev ua raws li "NACE MR0175 / ISO 15156" txhais li cas?
Cov txheej txheem no qhia txog qhov yuav tsum tau ua rau cov khoom siv hlau (xws li cov kav dej seamless) resistant rau Sulfide Stress Cracking (SSC) nyob rau hauv ib puag ncig uas muaj H₂S ntub dej, uas yog feem ntau hauv cov roj thiab roj ntau lawm. Kev ua raws cai yog qhov tseem ceeb rau kev siv qaub ncaug.
