|
|
本帖最后由 一叶而之秋 于 2016-5-12 16:50 编辑
ASTM A370中关于弯曲试验英文原文:
A2.5.1.6 Bend Test—For pipe used for coiling in sizes 2 in.and under a bend test is made to determine its ductility and thesoundness of weld. In this test a sufficient length of full-size pipe is bent cold through 90° around a cylindrical mandrel having a diameter 12 times the nominal diameter of the pipe.For close coiling, the pipe is bent cold through 180° around a mandrel having a diameter 8 times the nominal diameter of the pipe.
中文大概的意思是:对于2in的盘管应进行弯曲试验,并且弯曲到90度。对于紧密盘绕(密盘管)弯曲到180度。
ASTM A106中关于弯曲试验英文原文:
11.1 For pipe NPS 2 [DN 50] and under, a sufficient length of pipe shall stand being bent cold through 90° around a cylindrical mandrel, the diameter of which is twelve times the outside diameter (as shown in ASME B 36.10M) of the pipe,without developing cracks. When ordered for close coiling, the pipe shall stand being bent cold through 180° around a cylindrical mandrel, the diameter of which is eight times the outside diameter (as shown in ASME B 36.10M) of the pipe,without failure.
中文大概的意思是:对于2in的钢管应进行弯曲试验,并且弯曲到90度。当按照密盘管订货时,弯曲到180度。
第1,我不知道对以上英文理解是否正确;
第2,为什么A370中只是对 2 in及以下盘管进行弯曲试验,而A106确要求对2 in及以下管子;
以上问题烦请论坛中的高手帮忙解释一下。谢谢。
|
|
|