1. Cov raj plaub fab uas tsim los ntawm cov chav ntawm tib tus qauv puas tuaj yeem ua tiav tib lub phab ntsa tuab li cov raj puag ncig,
2. Tib lub sijhawm, nws txo qhov khawb ntawm cov kav hlau los ntawm lub tshuab dov,
3. Plaub qhov chaw seem puav leej raug quab yuam tib lub sijhawm, ua rau cov yeeb nkab hlau uas tsim los zoo nkauj dua,
4. Cov txheej txheem no yooj yim rau kev khiav lag luam, txo qhov siv zog rau cov neeg ua haujlwm, thiab txhim kho kev ua haujlwm zoo,
5. Qhov zoo tshaj plaws ntawm cov txheej txheem no yog tias nws txuag tau pwm,
6. Koj tuaj yeem ntswj qhov chaw ntawm qhov vuam seam dawb.
| ERW TUBE MILL LINE | |||||
| Qauv | Ryeeb nkab puag ncig mm | Plaub fabyeeb nkab mm | Qhov tuab mm | Kev ua haujlwm ceev m/feeb | |
| ERW 20 | Ф8-Ф20 | 6x6-15 × 15 | 0.3-1.5 | 120 | Nyeem Ntxiv |
| ERW32 | Ф10-Ф32 | 10 × 10-25 × 25 | 0.5-2.0 | 120 | |
| ERW50 | Ф20-Ф50 | 15 × 15-40 × 40 | 0.8-3.0 | 120 | |
| SIB 76 | Ф32-Ф76 | 25 × 25-60 × 60 | 1.2-4.0 | 120 | |
| ERW89 | Ф42-Ф89 | 35 × 35-70 × 70 | 1.5-4.5 | 110 | |
| ERW114 | Ф48-Ф114 | 40 × 40-90 × 90 | 1.5-4.5 | 65 | |
| ERW140 | Ф60-Ф140 | 50 × 50-110 × 110 | 2.0-5.0 | 60 | |
| ERW165 | Ф76-Ф165 | 60 × 60-130 × 130 | 2.0-6.0 | 50 | |
| ERW219 | Ф89-Ф219 | 70 × 70-170 × 170 | 2.0-8.0 | 50 | |
| ERW273 | Ф114-Ф273 | 90 × 90-210 × 210 | 3.0-10.0 | 45 | |
| ERW325 | Ф140-Ф325 | 110 × 110-250 × 250 | 4.0-12.7 | 40 | |
| ERW 377 | Ф165-Ф377 | 130 × 130-280 × 280 | 4.0-14.0 | 35 | |
| ERW406 | Ф219-Ф406 | 170 × 170-330 × 330 | 6.0-16.0 | 30 | |
| ERW508 | Ф273-Ф508 | 210 × 210-400 × 400 | 6.0-18.0 | 25 | Nyeem Ntxiv |
| ERW660 | Ф325-Ф660 | 250 × 250-500 × 500 | 6.0-20.0 | 20 | Nyeem Ntxiv |
| ERW720 | Ф355-Ф720 | 300 × 300-600 × 600 | 6.0-22.0 | 20 | Nyeem Ntxiv |
| Cov Kab Ntau Lawm Yeeb Nkab Hlau Stainless | |||||
| Qauv | Ryeeb nkab puag ncig mm | Plaub fabyeeb nkab mm | Qhov tuab mm | Ua haujlwm ceev m/feeb | |
| SS25 | Ф6-Ф25 | 5 × 5-20 × 20 | 0.2-0.8 | 10 | Nyeem Ntxiv |
| SS32 | Ф6-Ф32 | 5 × 5-25 × 25 | 0.2-1.0 | 10 | Nyeem Ntxiv |
| SS51 | Ф9-Ф51 | 7 × 7-40 × 40 | 0.2-1.5 | 10 | Nyeem Ntxiv |
| SS64 | Ф12-Ф64 | 10 × 10-50 × 50 | 0.3-2.0 | 10 | Nyeem Ntxiv |
| SS76 | Ф25-Ф76 | 20 × 20-60 × 60 | 0.3-2.0 | 10 | Nyeem Ntxiv |
| SS114 | Ф38-Ф114 | 30 × 30-90 × 90 | 0.4-2.5 | 10 | Nyeem Ntxiv |
| SS168 | Ф76-Ф168 | 60 × 60-130 × 130 | 1.0-3.5 | 10 | Nyeem Ntxiv |
| SS219 | Ф114-Ф219 | 90 × 90-170 × 170 | 1.0-4.0 | 10 | Nyeem Ntxiv |
| SS325 | Ф219-Ф325 | 170 × 170-250 × 250 | 2.0-8.0 | 3 | Nyeem Ntxiv |
| SS426 | Ф219-Ф426 | 170 × 170-330 × 330 | 3.0-10.0 | 3 | Nyeem Ntxiv |
| SS508 | Ф273-Ф508 | 210 × 210-400 × 400 | 4.0-12.0 | 3 | Nyeem Ntxiv |
| SS862 | Ф508-Ф862 | 400 × 400-600 × 600 | 6.0-16.0 | 2 | Nyeem Ntxiv |