Plant chimney-flue for corrosion-resistant steel burning liquefied petroleum gas or natural gas-fired

摘要

0.030% 0.005% or more, Si:: C 0.50% or less than 0.18%, Mn: 3.00 less than 1.50% or more, P: 0.030% or less, S: 0. 0050% or less, Cr: 9.0% or less than 4.0%, Al: 1.50% or less than 0.20%, N: made of steel composition containing 0.020% or less, local pitting, etc. to provide a chimney-flue for corrosion-resistant steel plant fired liquefied petroleum gas or natural gas-fired that it is possible to prevent rust and scattering perforated due to corrosion to progress.