STEEL HOLLOW SECTION FOR WINDOW can be said (WINDOW SECTION) 
(STEEL PROFILE FOR WINDOWS) 

(LTZ PIPE) SIZE: 28*28, 29*29,34*34, 38*38

THICKNESS: 0.3-2.0MM

BLACK AND BRIGHT  

PACKING: PLASTIC BAG OR ACCORDING TO YOUR NEEDS

USAGE: FOR MAKING WINDOWS PROFILE AND DOOR

QUALITY: Q195-Q235 CAN BE BENDED, SOFT MATERIAL.

LTZ is widely use in the construction filed as window material. we have rich experience to manufacture LTZ, expect the above sizes, you also can send your drawings, then I will tell you the result first time. so please rest assured the quality is well guaranteed, so if you have any question, please do not hesitate to let me know