A691合金管的廣泛用途

 A691     11/4crcL22合金管屬于合金管系列。合金管（Alloy pipe）是高溫高壓焊管，其性能要比一般的無縫鋼管高很多，因為這種鋼管里面含Cr比較多，其耐高溫、耐低溫、耐腐蝕的性能是其他無縫鋼管比不上的，所以合金管在石油、化工、電力、鍋爐等行業(yè)的用途比較廣泛。http://wwwtjbjsm.com

A691鋼管等級                      鋼種                                       ASTM標(biāo)準(zhǔn)              等級

CM-65                     碳鉬鋼                                                A204/A204M                                 A

 CMS-75                   碳錳鋼                                              A299/A299M                                  ...

1/2CR                       1/2%鉻 1/2%鉬鋼                            A387/A387M                                    2

11/4CR                       11/4%鉻 11/2%鉬鋼                     A387/A387M                                    11

21/4CR                        21/4鉻    1%鉬鋼                           A387/A387M                                    22

 ASTM A691 21/4CL4