20 # seamless steel yeeb nkab feem ntau siv 20 # zoo carbon steel ua cov khoom siv raw, uas yog cov pa roj carbon zoo uas tsis muaj cua sov seamless steel yeeb nkab feem ntau siv rau hauv cov qauv tsev thiab cov qauv kho tshuab.

20 # hlau muaj cov yam ntxwv hauv qab no: zoo plasticity thiab muaj zog weldability. Vim nws lub zog qis, nws yog qhov tsim nyog rau kev ua txias thiab cov xwm txheej tsis muaj zog siab.

20 # seamless steel yeeb nkab siv tau rau hauv cov lag luam hauv qab no:

1. Rau cov kav dej boiler siab qis thiab nruab nrab, tus qauv siv yogGB 3087, siv los tsim cov raj superheater thiab cov raj dej txias ntawm cov boilers nruab nrab thiab qis siab (ua haujlwm siab ≤5.9 MPa), uas nyob rau hauv qhov kub siab (≤480 ℃) + dej pa oxidation ib puag ncig rau lub sijhawm ntev

2. Cov kav dej tawg roj av, tus qauv siv yogGB 9948, siv rau cov reactors, cov cua sov sib pauv, thiab lwm yam ntawm cov chaw ua roj av refining, tiv tauj cov kua qaub nruab nrab (H₂S, CO₂) thiab siab siab (txog li 15 MPa)

3. Cov khoom siv chiv siab, tus qauv siv yogGB 6479, siv rau cov khoom siv chiv siab (10 ~ 32 MPa) xws li cov ammonia thiab urea, tiv tauj cov xov xwm corrosive heev (xws li kua ammonia, urea yaj)

Cov kav hlau tsis muaj qhov kub thiab txias rau kev txhawb nqa hydraulic, tus qauv siv yogGB/T17396, siv rau cov ncej txhawb nqa hydraulic thiab jacks hauv cov chaw tsuas thee, thiab tiv taus cov khoom thauj hloov pauv ntau zaus (50 ~ 100 MPa) thiab kev co cuam tshuam