发布时间：2014-08-19 15:55:17

ASTM A387 Grade 22 Class 1 is in the standard ASTM A387/A387M . A387 Grade 22 Class 1 is a kind of Cr-Mo-alloy steel plates material used to fabric high temperature pressure vessels. SA387 have ten grades or levels. They are : grade 2 , grade 12 , grade 11 , grade 22 , grade 22L , grade 21 , grade .........【阅读全文】

发布时间：2014-08-19 15:49:17

ASTM A387 Grade 22 is in the standard ASTM A387/A387M. A387 Grade 22 is a kind of Cr-Mo-alloy steel plates material used to fabric high temperature pressure vessels. SA387 have ten grades or levels. They are : grade 2 , grade 12 , grade 11 , grade 22 , grade 22L , grade 21 , grade 21L, grade 5 , gr.........【阅读全文】

发布时间：2014-08-19 14:40:15

ASTM A387 Grade 12 is in the standard ASTM A387/A387M. A387 Grade 12 is a kind of Cr-Mo-alloy steel plates material used to fabric high temperature pressure vessels. SA387 have ten grades or levels. They are : grade 2 , grade 12 , grade 11 , grade 22 , grade 22L , grade 21 , grade 21L , grade 5 , g.........【阅读全文】

发布时间：2014-08-19 14:26:34

ASTM A387 Grade 11 Class 1 is in the standard ASTM A-387/A-387M . A387 Grade 11Class 1 is a kind of Cr-Mo-alloy steel plates material used to fabric high temperature pressure vessels. A387 have ten grades or levels. They are : grade 2 , grade 12 , grade 11 , grade 22 , grade 22L , grade 21 , grade .........【阅读全文】

发布时间：2014-08-19 14:20:52

ASTM A387 Grade 11 is in the standard ASTM A-387/A-387M . SA387 Grade 11 is a kind of Cr-Mo-alloy steel plates material used to fabric high temperature pressure vessels. A387 have ten grades or levels. They are : grade 2, grade 12, grade 11, grade 22, grade 22L, grade 21, grade 21L, grade 5 , grade.........【阅读全文】