특별한 관
350x350 shs steel hollow section
Secondary Or Not
Non-secondary
size
19 x 19 mm to 500 x 500 mm
thickness tolerance
+/-0.15 mm
Outer corner
max 3*thickness
length tolerance
-0,+15 mm
advantage 1
We are a top 500 enterprise in china
advantage 2
YOUFA is the drafter of GB T 3091 pipe standard