Proses iki digunakake kanggo ngasilake pipa baja karbon standar.
Bagean mbentuk pra-las nggunakake rol sing padha, sing ngidini pangowahan spesifikasi produksi sing beda tanpa kudu dibongkar utawa diganti; mung rol ing bagean ukuran sing kudu diganti.
Nalika ngasilake pipa baja tahan karat utawa pipa baja entheng nggunakake las busur terendam, kecepatan las sing luwih alon ngidini produksi pipa baja tahan karat tanpa ngganti rol.
Iki tegese rol bisa dienggo bareng ing kabeh jalur kanggo spesifikasi sing beda-beda, lan bisa diatur kanthi listrik.
Nggunakake proses iki, jalur produksi pipa bisa nyuda investasi rol, nambah efisiensi produksi, nyuda keausan peralatan, lan nyuda intensitas tenaga kerja.
Kajaba iku, pipa sing dilas sing diasilake dening proses iki nduweni presisi sing dhuwur, pinggiran sing luwih alus, lan tampilan sing luwih teratur.
| Jalur Pabrik Tabung ERW | |||||
| Model | Rpipa bunder mm | Kothakpipa mm | Kekandelan mm | Kacepetan kerja m/menit | |
| ERW20 | F8-F20 | 6x6-15×15 | 0.3-1.5 | 120 | Waca Liyane |
| ERW32 | F10-F32 | 10×10-25×25 | 0.5-2.0 | 120 | |
| ERW50 | F20-F50 | 15×15-40×40 | 0.8-3.0 | 120 | |
| ERW76 | F32-F76 | 25×25-60×60 | 1.2-4.0 | 120 | |
| ERW89 | F42-F89 | 35×35-70×70 | 1.5-4.5 | 110 | |
| ERW114 | Ф48-Ф114 | 40×40-90×90 | 1.5-4.5 | 65 | |
| ERW140 | F60-F140 | 50×50-110×110 | 2.0-5.0 | 60 | |
| ERW165 | F76-F165 | 60×60-130×130 | 2.0-6.0 | 50 | |
| ERW219 | F89-F219 | 70×70-170×170 | 2.0-8.0 | 50 | |
| ERW273 | Ф114-Ф273 | 90×90-210×210 | 3.0-10.0 | 45 | |
| ERW325 | F140-F325 | 110×110-250×250 | 4.0-12.7 | 40 | |
| ERW377 | F165-F377 | 130×130-280×280 | 4.0-14.0 | 35 | |
| ERW406 | F219-F406 | 170×170-330×330 | 6.0-16.0 | 30 | |
| ERW508 | F273-F508 | 210×210-400×400 | 6.0-18.0 | 25 | Waca Liyane |
| ERW660 | F325-F660 | 250×250-500×500 | 6.0-20.0 | 20 | Waca Liyane |
| ERW720 | F355-F720 | 300×300-600×600 | 6.0-22.0 | 20 | Waca Liyane |
| Jalur Produksi Pipa Baja Tahan Karat | |||||
| Model | Rpipa bunder mm | Kothakpipa mm | Kekandelan mm | Kacepetan kerja m/menit | |
| SS25 | Ф6-Ф25 | 5×5-20×20 | 0.2-0.8 | 10 | Waca Liyane |
| SS32 | Ф6-Ф32 | 5×5-25×25 | 0.2-1.0 | 10 | Waca Liyane |
| SS51 | Ф9-Ф51 | 7×7-40×40 | 0.2-1.5 | 10 | Waca Liyane |
| SS64 | Ф12-Ф64 | 10×10-50×50 | 0.3-2.0 | 10 | Waca Liyane |
| SS76 | Ф25-Ф76 | 20×20-60×60 | 0.3-2.0 | 10 | Waca Liyane |
| SS114 | Ф38-Ф114 | 30×30-90×90 | 0.4-2.5 | 10 | Waca Liyane |
| SS168 | Ф76-Ф168 | 60×60-130×130 | 1.0-3.5 | 10 | Waca Liyane |
| SS219 | Ф114-Ф219 | 90×90-170×170 | 1.0-4.0 | 10 | Waca Liyane |
| SS325 | Ф219-Ф325 | 170×170-250×250 | 2.0-8.0 | 3 | Waca Liyane |
| SS426 | Ф219-Ф426 | 170×170-330×330 | 3.0-10.0 | 3 | Waca Liyane |
| SS508 | Ф273-Ф508 | 210×210-400×400 | 4.0-12.0 | 3 | Waca Liyane |
| SS862 | Ф508-Ф862 | 400×400-600×600 | 6.0-16.0 | 2 | Waca Liyane |