The effect of pearlite bands and C, Mn, S on HIC was discussed, the more the pearlite bands, the lower the resistance to HIC, and HIC will develop along the banding microstructure.

• 结果表明：随珠光体偏析带组织的产生，管线钢抗氢致裂纹性能下降；碳含量增加，将增强氢致裂纹敏感性；