please kindly check the standards as below:

GB Standard ---- Q235A/B, Q345A/B EN Standard ---- St 37-2, St 52-3 ASTM Standard --- ASTM A36 JIS Standard ---- SS400 2. Size: 20x20mm to 250x250mm 3. Thickness: 2 to 35mm 4. Length: 5.8m -- 12m The detailed dimension as follows: 1) 20 x 20 x 2.2mm 2) 25 x 25 x 2.5 - 3.0mm 3) 30 x 30 x 2.5 - 3.0mm 4) 35 x 35 x 2.5mm 5) 38 x 38 x 3.0 - 4.0mm 6) 40 x 40 x 3.0 - 4.0mm 7) 48 x 48 x 3.5 - 4.5mm 8) 50 x 50 x 3.0 - 6.0mm 9) 60 x 60 x 4.0 - 8.0mm 10) 63 x 63 x 4.0 - 8.0mm 11) 70 x 70 x 5.0 - 8.0mm 12) 75 x 75 x 5.0 - 8.0mm

YOLANDA

supply the steel angle