Steel grade: 

AISI 4145 H modified alloy steel, full length heat treated, with chemical analysis and mechanical properties which conform to the requirements of API Spec 7 (latest edition)

Types:

• friction welded HWDP 
• integral HWDP

Sizes:

3 1/2", 4”, 4 1/2", 5", 5 1/2" and 6” HWDP