内容标题37

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                河北爱游戏体育有限爱游戏(AYX)综合

                L415异径管

                L415异径管

                ?L415异径管执行标准:GB/T29168.1及行标和部标。...
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                L415异径管

                 
                        L415异径管是管线钢异径管的一种。执行标准:GB/T29168.1及行标和部标。
                       管线钢是一种用于输送石油、天然气等管道所用的一类具有特殊要求的钢种。
                       异径管是用于管道变径处的一种管件,亦称大小头。通常采用的成形工艺为缩径压制、扩径压制或缩径加扩径压制,对某些规格的异径管也可采用冲压成形。大小头的缩径成形工艺是将与异径管大端直径相等的管坯放入成形模中,通过沿管坯轴向方向的压制,使金属沿模腔运动并收缩成形。根据异径管变径的大小,分为一次压制成形或多次压制成形。具有质量好、耐磨损、不易损坏等特点,广泛用于电力、石油、冶金、化工等管道设备系统中。