Q: Hauv kev lag luam roj thiab roj, hom dab tsi ntawm cov yeeb nkab seamless tau teev tseg rau ntev - cov kav dej sib kis?
A: API SPEC 5Lcov yeeb nkab yog cov ntsiab lus tseem ceeb rau cov kav dej seamless steel siv hauv cov kav dej thauj mus los rau cov roj av thiab cov nkev -3-7.
Q: Dab tsi seamless yeeb nkab qib yog nyiam rau conveying roj crude thiab natural gas?
A: API 5LQib, PSL 1 thiab PSL 2, feem ntau siv rau lub hom phiaj no. Cov kav dej no tau tsim tshwj xeeb rau cov kev xav tau ntawm kev lag luam roj thiab roj -3-7.
Q: Dab tsi yog ib hom American qauv seamless yeeb nkab siv hauv cov roj refineries thiab sib sau ua ke?
A: ASTM A53 Qib Byog ib qho kev qhia tshwj xeeb rau cov welded thiab seamless dub los yog galvanized steel yeeb nkab siv nyob rau hauv mechanical thiab siab daim ntaub ntawv, nrog rau hauv refineries -2-10.
Q: Hauv kev lag luam tshuaj, tus yam ntxwv ntawm ASTM A106GR.B ua rau nws haum?
A: Nwssiab zog thiab zoo corrosion kujua kom nws tsim nyog rau kev xa tawm ntau yam corrosive kua hauv kev lag luam tshuaj -4.
Q: Rau cov tshuaj corrosive heev, hom seamless yeeb nkab tau teev tseg?
A: Rau ib puag ncig corrosive hnyav, stainless hlau seamless kav zoo liGB/T 14976los yogASTM B 677 Cov khoom lag luam(nrog UNS N08925, UNS N08354, thiab lwm yam) tau teev tseg rau lawv cov kev tiv thaiv corrosion zoo tshaj -6-9.
