According to the different Shape purpose,elbowscan be divided into: groove type elbow, bend, double of cutting sleeve type elbow,
, stay inside and outside bend, teeth Angle, stamping elbow, elbow push system, socket bend, wire butt
If according to the grades of pressure points,elbows can be dividedinto about 17 species, same to the pipe standard ofUnited States. there are: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, SCH100, Sch120, Sch140, Sch160, XXS; One of the most common is two STD and XS.
Steel grades:
Carbon steel :Gr.B,A53,A106,A105,A179,A192,A197,A234 WPB etc
Stainless steel :304,304l,312,316,316L,310S and more
Alloy steel:15Cr Mo,35CrMo~42CrMo and more.
Surface treatment: Galvanized ,Black painting ,Varnished coating,Rust-proof painting or as per customer's requirements.