1. Q: Qib twg yog siv rau lub tshuab hluav taws xob tsheb (tsis yog-manifold)?
A: Thaum feem ntau aluminized rau corrosion kuj, lub hauv paus hlau feem ntau yog qis -carbon, formable qib zoo li AISI 1006 los yog 1008, ua rau specifications zoo li ASTM A1011 los yog zoo sib xws rau sawb hlau, uas yog ces welded rau hauv raj.
2. Q: Kev ua raws li "NACE MR0175/ISO 15156" txhais li cas rau API 5L yeeb nkab?
A: Nws txhais tau hais tias cov yeeb nkab cov tshuaj muaj pes tsawg leeg (tshwj xeeb yog hardness, sulfur, thiab phosphorus) yog tswj los tiv thaiv Sulfide Stress Cracking (SSC) hauv kev pabcuam qaub (roj / roj uas muaj H2S). Qhov no feem ntau yuav tsum tau ua tshwj xeeb thiab txo qis hardness txwv.
3. Q: Lub sij hawm phab ntsa thickness li cas (xws li SCH 40, SCH 80) cuam tshuam rau qib?
A: Lub sij hawm teev cov phab ntsa thickness rau ib tug muab txoj kab uas hla. Qib txhais cov khoom siv lub zog. Ob qho xwm txheej ua ke txiav txim siab qhov ntsuas siab ntawm cov yeeb nkab (piv txwv li, A106 Gr. B, SCH 40 muaj qhov ntsuas tshwj xeeb rau ASME B31.3).
4. Q: Dab tsi yog qhov kev siv ntawm ASTM A252 yeeb nkab?
A: ASTM A252 npog welded thiab seamless steel yeeb nkab pawg. Qib 1, 2, thiab 3 muaj qhov ua kom muaj zog ntxiv. Lawv yog siv raws li cov qauv hauv paus uas tau tsav mus rau hauv av.
5. Q: "DSAW" yeeb nkab yog dab tsi, thiab nws puas muaj rau cov qib qis -carbon?
A: DSAW stands rau Ob Chav Submerged Arc Welded. Nws yog txheej txheem rau loj - txoj kab uas hla, tuab - cov yeeb nkab phab ntsa. Feem ntau qis- cov qib carbon ua los ntawm DSAW suav nrog API 5L Qib B thiab X42 txog X70 rau cov kav dej loj. Cov txheej txheem tsim ib sab hauv thiab sab nraud weld seam.
