Model

AWS

Main Applications

R107

E7015-A1

Used for welding boiler pipe (such as 15Mo)at operating temperature below 510℃. It is also used for general HSLA steel (high strength low alloy steel).

R207

E8015-B1

Used for welding pearlite heat-resistant steel (Such as 12CrMo) at temperature below 510 ℃ and high temperature/high pressure pipe, chemical container.

R307

E8015-B2

Used for welding pearlite heat-resistant steel that content Cr1％-Mo0.5％(Such as 5CrMo) at temperature below 520 ℃. Such as boiler pipe, high pressure vessel, petroleum refining equipment and etc. It is also used for welding steel casting of 30CrMnSi.

R407

E9015-B3

Used for welding the kind of Cr2.5Mo pearlite heat-resistant steel (such as 2¼CrMo).For example high temperature/high pressure pipe, petroleum cracking equipment at operating temperature below 550℃.