ซัพพลายเออร์ที่มีใบอนุญาตการทำธุรกิจ
ซัพพลายเออร์ที่ผ่านการตรวจสอบแล้ว 
| ท่อสี่เหลี่ยม ( มม .) | ท่อสี่เหลี่ยมผืนผ้า ( มม .) | ||
| 16 × 16 × 0.4 × 1.5 | 380 × 380 × 8.0 × 14.0 | 10 × 20 × 0.6 × 1.5 | 250 × 150 × 6 × 12.0 |
| 18 × 18 × 0.4 × 1.5 | 400 × 400 × 8.0 × 14.0 | 14 × 21 × 0.6 × 1.5 | 250 × 100 × 6 × 12.0 |
| 20 × 20 × 0.4 × 1.5 | 420 × 420 × 10.0 × 14.0 | 15 × 30 × 1.5 × 1.5 | 250 × 200 × 6 × 12.0 |
| 25 × 25 × 0.6 × 2.0 | 450 × 450 × 10.0 × 14.0 | 15 × 38 × 0.6 × 1.5 | 300 × 150 × 6 × 12.0 |
| 30 × 30 × 0.6 × 4.0 | 480 × 480 × 10.0 × 14.0 | 20 × 30 × 0.6 × 2.0 | 300 × 200 × 6 × 12.0 |
| 34 × 34 × 1.0 × 2.0 | 500 × 500 × 10.0 × 14.0 | 20 × 40 × 0.8 × 2.0 | 300 × 250 × 6 × 12.0 |
| 35 × 35 × 1.0 × 4.0 | 20 × 50 × 1.0 × 2.0 | 400 × 250 × 8 × 12.0 | |
| 38 × 38 × 1.0 × 4.0 | 550 × 550 × 10.0 × 40.0 | 22 × 35 × 0.9 × 2.0 | 400 × 300 × 8 × 12.0 |
| 40 × 40 × 1.0 × 4.5 | 600 × 600 × 10.0 × 40.0 | 25 × 40 × 0.9 × 3.75 | 450 × 200 × 8 × 12.0 |
| 44 × 44 × 1.0 × 4.5 | 700 × 700 × 10.0 × 40.0 | 25 × 65 × 1.0 × 2.0 | 450 × 250 × 8 × 12.0 |
| 45 × 45 × 1.0 × 5.0 | 800 × 800 × 10.0 × 50.0 | 30 × 40 × 1.0 × 3.75 | 400 × 300 × 8 × 12.0 |
| 50 × 50 × 1.0 × 5.0 | 900 × 900 × 10.0 × 50.0 | 30 × 45 × 1.0 × 3.75 | 400 × 350 × 8 × 12.0 |
| 60 × 60 × 1.5 × 5.0 | 1000 × 1000 × 10.0 × 50.0 | 30 × 50 × 1.0 × 4.0 | 500 × 200 × 10 × 12.0 |
| 70 × 70 × 2.0 × 6.0 | 30 × 60 × 1.0 × 4.5 | 500 × 250 × 10 × 12.0 | |
| 75 × 75 × 2.0 × 6.0 | 40 × 50 × 1.0 × 4.5 | 500 × 300 × 10 × 12.0 | |
| 80 × 80 × 2.0 × 6.0 | 40 × 60 × 1.0 × 5.0 | 500 × 350 × 10 × 12.0 | |
| 85 × 85 × 2.0 × 6.0 | 40 × 80 × 1.5 × 5.0 | 500 × 400 × 10 × 12.0 | |
| 95 × 95 × 2.0 × 8.0 | 40 × 100 × 2.0 × 5.0 | 500 × 450 × 10 × 12.0 | |
| 100 × 100 × 2.0 × 8.0 | 50 × 60 × 2.0 × 5.0 | ||
| 120 × 120 × 4.0 × 8.0 | 50 × 80 × 2.0 × 5.0 | 600 × 200 × 10 × 28.0 | |
| 150 × 150 × 6.0 × 10.0 | 50 × 100 × 2.0 × 8.0 | 600 × 400 × 10 × 28.0 | |
| 180 × 180 × 6.0 × 12.0 | 60 × 80 × 2.0 × 6.0 | 600 × 500 × 10 × 28.0 | |
| 200 × 200 × 6.0 × 12.0 | 80 × 100 × 2.0 × 8.0 | 800 × 400 × 10 × 28.0 | |
| 220 × 220 × 6.0 × 14.0 | 120 × 60 × 2.5 × 10.0 | 800 × 600 × 10 × 28.0 | |
| 250 × 250 × 6.0 × 14.0 | 120 × 80 × 2.5 × 10.0 | 800 × 700 × 10 × 28.0 | |
| 280 × 280 × 6.0 × 14.0 | 150 × 100 × 2.5 × 12.0 | 1000 × 400 × 10 × 28.0 | |
| 300 × 300 × 8.0 × 14.0 | 180 × 150 × 2.5 × 12.0 | 1000 × 500 × 10 × 28.0 | |
| 320 × 320 × 8.0 × 14.0 | 200 × 100 × 4 × 12.0 | 1000 × 600 × 10 × 28.0 | |
| 350 × 350 × 8.0 × 14.0 | 200 × 150 × 4 × 12.0 | 1000 × 800 × 10~28 | |
ซัพพลายเออร์ที่มีใบอนุญาตการทำธุรกิจ
ซัพพลายเออร์ที่ผ่านการตรวจสอบแล้ว 
