来源:蜘蛛抓取(WebSpider)
时间:2015-06-15 00:41
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a3钢是什么钢
API 5L 钢级(钢管牌号)L245N和L415Q、L360M等等中的L、N、Q、M是什么意思啊?钢管牌号是怎么分的呢?_百度知道
API 5L 钢级(钢管牌号)L245N和L415Q、L360M等等中的L、N、Q、M是什么意思啊?钢管牌号是怎么分的呢?
提问者采纳
Q是淬火加回火。245;T9711,管线钢,具体的牌号对照可参阅API 5L 44版或者GB/,L开头的材质都是国标材质不是美标API 5L所包含的材质钢级,L开头材质是对应美标API 5L的GB/、Q都是指交货状态、415什么的都是指屈服强度首先说明一点,M是形变热处理、GB/.1;T9711中的材质钢级,N是形变正火。N、M,L即LINE缩写.2;T9711
提问者评价
谢谢哈。。
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