发布时间：2014-09-09 11:57:37

 SA553 Type II in the standard SA553/SA553M is a kind of Ni alloy steel plates material used to fabric high temperature pressure vessels, the composition of Ni is 8% and 9%. SA553 have two types . They are : type I and type II . SA553 Type II need to be done the (Quenching + Tempering ) heat-t.........【阅读全文】

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】