1. Kodi machubu ozungulira opangidwa ndi mayunitsi a mtundu womwewo angakhale ndi makulidwe ofanana ndi a machubu ozungulira,
2. Nthawi yomweyo, imachepetsa kukanda kwa mapaipi achitsulo ndi mphero yozungulira,
3. Malo ena anayi amakakamizidwa nthawi imodzi, zomwe zimapangitsa kuti chitoliro chachitsulo chopangidwacho chikhale chokongola kwambiri,
4. Njirayi ndi yosavuta kuyigwiritsa ntchito, imachepetsa mphamvu ya ogwira ntchito, ndipo imapangitsa kuti ntchito igwire bwino ntchito,
5. Ubwino waukulu wa njirayi ndikuti imasunga nkhungu,
6. Mutha kupotoza momasuka malo a msoko wothira weld.
| Mzere wa ERW Chube Mill | |||||
| Chitsanzo | Rchitoliro cha bulu mm | Sikweyachitoliro mm | Kukhuthala mm | Kugwira ntchito mwachangu m/mphindi | |
| ERW20 | Ф8-Ф20 | 6x6-15×15 | 0.3-1.5 | 120 | Werengani zambiri |
| ERW32 | Ф10-Ф32 | 10×10-25×25 | 0.5-2.0 | 120 | |
| ERW50 | Ф20-Ф50 | 15×15-40×40 | 0.8-3.0 | 120 | |
| ERW76 | 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 | |
| ERW377 | 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 | Werengani zambiri |
| ERW660 | Ф325-Ф660 | 250×250-500×500 | 6.0-20.0 | 20 | Werengani zambiri |
| ERW720 | Ф355-Ф720 | 300×300-600×600 | 6.0-22.0 | 20 | Werengani zambiri |
| CHITOLI CHOPANGA CHITOLI CHOSASIYANA | |||||
| Chitsanzo | Rchitoliro cha bulu mm | Sikweyachitoliro mm | Kukhuthala mm | Liwiro logwira ntchito m/mphindi | |
| SS25 | Ф6-Ф25 | 5×5-20×20 | 0.2-0.8 | 10 | Werengani zambiri |
| SS32 | Ф6-Ф32 | 5×5-25×25 | 0.2-1.0 | 10 | Werengani zambiri |
| SS51 | Ф9-Ф51 | 7×7-40×40 | 0.2-1.5 | 10 | Werengani zambiri |
| SS64 | Ф12-Ф64 | 10 × 10-50 × 50 | 0.3-2.0 | 10 | Werengani zambiri |
| SS76 | Ф25-Ф76 | 20×20-60×60 | 0.3-2.0 | 10 | Werengani zambiri |
| SS114 | Ф38-Ф114 | 30×30-90×90 | 0.4-2.5 | 10 | Werengani zambiri |
| SS168 | Ф76-Ф168 | 60×60-130×130 | 1.0-3.5 | 10 | Werengani zambiri |
| SS219 | Ф114-Ф219 | 90×90-170×170 | 1.0-4.0 | 10 | Werengani zambiri |
| SS325 | Ф219-Ф325 | 170×170-250×250 | 2.0-8.0 | 3 | Werengani zambiri |
| SS426 | Ф219-Ф426 | 170×170-330×330 | 3.0-10.0 | 3 | Werengani zambiri |
| SS508 | Ф273-Ф508 | 210×210-400×400 | 4.0-12.0 | 3 | Werengani zambiri |
| SS862 | Ф508-Ф862 | 400×400-600×600 | 6.0-16.0 | 2 | Werengani zambiri |