ASTM A672 C70 Chav Kawm 12, 22, 32 Carbon Steel EFW Pipe Description
ASTM A672 CC70 yog ib qho electrofusion welded steel yeeb nkab raws li American Society for Testing and Materials (ASTM) tus qauv, tsim tshwj xeeb rau nruab nrab - kub thiab siab - kev siv siab. Nws cov tshuaj muaj pes tsawg leeg muaj cov ntsiab lus carbon tswj hauv qab 0.30%, nrog rau qhov tsim nyog ntawm cov ntsiab lus alloying xws li manganese thiab silicon ntxiv, thaum tswj nruj me ntsis cov ntsiab lus ntawm cov teeb meem xws li sulfur thiab phosphorus. Tom qab normalizing kev kho mob, cov ntaub ntawv pov thawj zoo heev mechanical zog, nrog ib tug tensile zog tshaj 485 MPa nyob rau hauv chav tsev kub, ib tug yield zog tsis tsawg tshaj li 275 MPa, thiab elongation tswj ntawm kwv yees li 30%.
ASTM A672 Qib c70 Yeeb Nkab Chemical Composition
ASTM A672 qib c70 yeeb nkab Mechanical Properties
Daim ntawv thov ntawm ASTM A672 C70 Class 12, 22, 32 Straight Seam Welded Pipe
A672C70 ncaj seam welded yeeb nkab yog dav siv nyob rau hauv ntau yam teb vim nws kev ua tau zoo heev. Hauv kev lag luam roj thiab roj, cov yeeb nkab steel no feem ntau siv nyob rau hauv ntev - cov kav dej thauj mus los, sib sau thiab xa cov kav dej, thiab cov kav dej hauv nroog. Nws lub zog siab thiab corrosion kuj ua tau raws li cov kev cov nyom ntawm kev kub siab thiab corrosive media.
Hauv kev lag luam tshuaj, A672C70 ncaj seam welded yeeb nkab feem ntau yog siv rau hauv cov kav dej rau kev thauj cov corrosive media xws li acids thiab alkalis. Tsis tas li ntawd, cov khoom siv no kuj tau siv dav hauv boiler pipelines thiab cov kav dej cua sov hauv kev lag luam fais fab. Nyob rau hauv xyoo tas los no, nrog rau kev loj hlob sai ntawm marine engineering, daim ntawv thov ntawm A672C70 ncaj seam welded yeeb nkab nyob rau hauv subsea pipelines, platform qauv, thiab lwm yam teb kuj maj mam nce.
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