Chitoliro cholamulidwa ndi ichi chimagwiritsidwa ntchito makamaka pakupopera komwe kumatentha kwambiri kuposa 350 ℃。Mwachitsanzo: kutumiza nthunzi, madzi ndi zina.
Mwa njira yopanda msoko: yotentha yomaliza komanso yozizira yomaliza
Magetsi kukana welded
Kupanga: chitoliro chopanda msoko (chotentha chomaliza kapena chozizira) / Chitoliro chamagetsi chopanda magetsi
Kukula: OD: 15.0 ~ 660mm WT: 2 ~ 50mm
Gulu: STPT370 ,STPT410,STPT480
Utali: 6M kapena kutalika kwake komwe kumafunikira.
Mapeto: Mapeto Oyera, Mapeto A Beveled.
Gulu ndi Chemical Composition (％)
| Gulu | C≤ | Si | Mn | P≤ | S≤ |
| Chithunzi cha STPT370 | 0.25 | 0.10-0.35 | 0.30-0.90 | 0.035 | 0.035 |
| Chithunzi cha STPT410 | 0.30 | 0.10-0.35 | 0.30-1.00 | 0.035 | 0.035 |
| Chithunzi cha STPT480 | 0.33 | 0.10-0.35 | 0.30-1.00 | 0.035 | 0.035 |
| Mechanical Properties | ||||||
| Gulu | Kulimba kwamakokedwe | Zokolola mphamvu | Elongation % | |||
| N/m㎡ | N/m㎡ | No.11 kapena No.12 zidutswa zoyesa | No. 5 zidutswa zoyesa | No. 4 mayeso chidutswa | ||
| Longitudinal | Chodutsa | Longitudinal | Chodutsa | |||
| Chithunzi cha STPT370 | 370 min | 215 min | 30 min | 25 min | 28 min | 23 min |
| Chithunzi cha STPT410 | 410 min | 245 min | 25 min | 20 min | 24 min | 19 min |
| Chithunzi cha STPT480 | 480 min | 275 min | 25 min | 20 min | 22 min | 17 min |
| 1. Mtengo wa elongation womwe uli pamwambapa sugwira ntchito pamachubu okhala ndi m'mimba mwake <40mm.Koma ziyenera kulembedwa. 2. Chitsanzo chimakwaniritsa zofunikira za JIS Z2201 muyezo; 3. Kwa chubu ndi makulidwe a khoma <8mm, pamene chitsanzo No. 12 kapena No. 5 chikugwiritsidwa ntchito, mtengo wochepa wa elongation umachepetsedwa ndi 1mm malinga ndi makulidwe a khoma, ndipo 1.5% imachotsedwa pamtengo wapamwamba. | ||||||
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- Kulekerera kwa OD ndi WT
Gawo
Kulekerera pa OD
Kulekerera pa WT
Chitoliro Chachitsulo Chotentha chomaliza
D - 50m
± 0.5 mm
S-4 mm
S≥4mm
± 0.5mm
± 12.5%
50mm≤D＜160mm
±1%
160mm≤D＜200
± 1.6 mm
D≥200mm
± 0.8%
Cold kumaliza Seamless Steel Pipe
D - 40m
± 0.3 mm
S＜2mm
± 0.2mm
D≥40mm
± 0.8%
S≥2mm
±10%
Mtengo wa ERW D - 40m
± 0.3 mm
S＜2mm
± 0.2mm
D≥40mm
± 0.8%
S≥2mm
±10%
Kwa mapaipi a kukula mwadzina 350A kapena kupitilira apo, kulolerana kwa OD kumatha kutsimikiziridwa ndi kutalika kwa circumferential.Pankhaniyi, kulolerana kudzakhala +/- 0.5%
- Kulekerera kwa OD ndi WT
Chitoliro chachitsulo chotentha chomaliza (ERW): Kutentha kocheperako kapena kukhazikika kumatha kugwiritsidwa ntchito
Cold finish seamless (ERW) chitoliro chachitsulo: kutentha pang'ono annealing kapena normalizing
Zochita ndi zowongoka, mapeto ake amadulidwa perpendicularly, ndipo palibe zolakwika zamkati ndi zakunja.Zowonongeka zitha kuchotsedwa, koma makulidwe ochepa a khoma ayenera kutsimikizika.
Gulu
Kupanga njira kachidindo (yotentha yomalizidwa mopanda chitsulo chitoliro: SH; Chitoliro chozizira chomaliza chopanda msoko: SC).
Makulidwe (m'mimba mwake mwadzina X makulidwe a khoma mwadzina kapena m'mimba mwake X makulidwe a khoma).
Dzina la wopanga kapena mtundu wake.
Kupanga njira (yotentha yomaliza ERW zitsulo chitoliro: EH; Cold anamaliza ERW zitsulo chitoliro: EC).
Makulidwe (m'mimba mwake mwadzina X makulidwe a khoma mwadzina kapena m'mimba mwake X makulidwe a khoma).
Chizindikiro Z kuti chiwonetsere chofunikira chapadera.
Chitoliro chopanda kanthu, zokutira zakuda (zosinthidwa);
6" ndi makulidwe ocheperako M'mitolo yokhala ndi masing'i awiri a thonje, makulidwe ena otayirira;
Zonsezi zimathera ndi otetezera mapeto;
Mapeto osavuta, mapeto a bevel (Kupatuka kwabwino ndikololedwa, ndipo palibe kupatuka kolakwika komwe kumaloledwa)
Kuyika chizindikiro.
