API 5L Qib B, ASTM A106 Qib B thiab A53 B,Peb cov no yog cov khoom siv feem ntau siv rau kev lag luam uas hais txog kev tsim cov kav dej lossis cov roj thiab cov roj, cov kua xa tawm.
ASTM 106 yeeb nkab yog hais txog cov pa roj carbon steel yeeb nkab uas tsim los ntawm kub dov los yog txias kos (dov) seamless.
ASTM A53 yeeb nkab npog welded thiab seamless steel yeeb nkab, hauv cov khoom siv roj carbon dub thiab qee qhov kub dipped galvanized (zinc coated).
Qhov sib txawv Amoung API 5L Qib B, ASTM A106 Qib B, ASTM A53 Qib B, ntau cov ntsiab lus saib ntawm no.
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API 5L Qib B Yeeb Nkab Cov Ntaub Ntawv
API 5L Qib B Cov ntaub ntawv rub tawm
API 5L Qib B Yeeb Nkab PSL1 Chemical Composition
a. Cu tsawg dua lossis sib npaug li 0.50%; Ni Tsawg dua lossis sib npaug li 0.50% thiab Mo Less dua lossis sib npaug li 0.15%
b. Rau 0.01% txo cov pa roj carbon ntau, qhov nce ntawm 0.05% Mn tau tso cai, nce tp qhov siab tshaj plaws ntawm 1.65% rau qib siab dua lossis sib npaug L245 lossis B, tab sis Tsawg dua lossis sib npaug L360 lossis X52; mus txog qhov siab tshaj ntawm 1.75% rau qib> L360 lossis X52, tab sis
d. Nb + V + Ti Tsawg dua lossis sib npaug li 0.15% tshwj tsis yog pom zoo.
e. Tshwj tsis yog tias pom zoo.
f. Tshwj tsis yog tias pom zoo, Nb + V + Ti Tsawg dua lossis sib npaug rau 0.001%
g. Tsis txhob txhob txwm tshaj tawm B tau tso cai thiab qhov seem B Tsawg dua lossis sib npaug li 0.001%.
Cim npe nrov: api 5l qib b yeeb nkab, Tuam Tshoj api 5l qib b yeeb nkab manufacturers, lwm tus neeg, Hoobkas
