By taking reasonable hot-rolling process,the microstructure of X70 production was mainly acicular ferrite,and its strength and toughness were good enough to satisfy the...

• 采取合理的热连轧工艺生产的X70钢,其组织以针状铁素体为主,强韧性优良,各项性能均满足“西气东输工程制管用热轧板卷技术条件”的要求。