1. Coj cov qib hauv tsev
GB / T 8163 Txuj Ci: 20 # Seamless steel yeeb (tshuaj lom neeg muaj tshuaj lom neeg thiab cov khoom siv neeg siv tshuab yog feem ntau nrog L245).
GB / T 9711 Txuj Ci: L245 Steel Yeeb ncaj qha nrog cov roj hauv tsev thiab roj pipeline hlau, hais txog nws cov yam ntxwv uas tsis muaj roj.
2. Qhov sib txawv thiab cov sib thooj nrog No. 20 tus hlau
Kev sib piv sib piv:
L245: C Tsawg dua lossis sib npaug ntawm 0
No. 2 {0 steel: c {}}}. {}}.}, {}.
Cov ntsiab lus ntawm qhov sib txawv: L245 muaj cov ntsiab lus manganese ntau dua thiab kev tswj hwm kev coj ua tsis zoo, ntau tsim nyog rau kev siv cov kua hluav taws kub siab.
Hloov Chaw:
Lawv tuaj yeem hloov kho rau txhua lwm yam nyob rau hauv dav dav pipelines, tab sis lawv yuav tsum tau ua tib zoo saib xyuas thaum lawv koom nrog kev kub siab, tsawg lossis xeb dej ib puag ncig.
3. Kev cuam tshuam loj hauv ntiaj teb
ASTM A53 / A106: Kev ua yeeb yam ntawm L245 yog ze rau ntawm Gr.B Seamless Steel Yeeb Nkab, tab sis nws yuav tsum tau sau tseg tias cov pa roj carbon cov ntsiab lus me ntsis.
4. Daim Ntawv Thov Kev Sau Npe
Roj thiab cov roj sib kis tau: L245N yog siv dav hauv cov roj qis-roj (piv txwv li nkev puv cov kab).
Neeg kho tshuab cov qauv: Hloov No.20 Hlau los tsim cov Shafts, nkhaus thiab lwm yam tsis yog-siab-muaj zog.
