大直径厚壁钢管的冷热加工性能
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SI.HANJIEXING
大直径厚壁钢管的强度相对较高，其焊接性是大家关心的问题。测试了304不锈钢无缝管，合金材料焊接后热影响区的开裂倾向和脆化倾向。
1 .REYINGXIANGQUDELIEFENGQUSHI
DANGZHIZAOZHONGGUODIYILIANGDAZHIJINGHOUBIGANGGUANDEDAXINGGUANCHESHI，SHIYAN
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