Our products list is as following:
A Hot dipped gal. steel tubes
1) size 1/2*1mm to 10*12 mm
2) could be threaded and socketed
3) daily production is 500 tons
B pre-galvanized steel tube,
1) size: 15*15mm to 60*600mm,
2) zinc coated 120g/m2
C Round tube:
1) diameter 21.3-273mm
2) thickness: 0.5-25mm
3) material ,GB Q195-235-345 ASTM A36 A53
4) yearly production capacity: 100, 000 tons/ year
D square tube:
1) size: 10*10mm to 400*400mm,
2) thickness: 0.5-25mm
3) material: GB Q195-235-345 ASTM A36 A53
4) yearly production capacity: 100, 000 tons/ year
E Rectangular steel tube:
1) size: 8*16mm to 200*400mm
2) thickness: 0.5-25mm
3) material: GB Q195-235-345 ASTM A36 A53
4) yearly production capacity: 100, 000 tons/ year

Looking forward to your further information.
Best wishes!