Mtundu | Zaukadaulo | Zakuthupi | Standard | Gulu | Kugwiritsa ntchito |
Electric Resistance Welded (RW) chitoliro chachitsulo | Kuthamanga Kwambiri | Chitsulo cha Carbon | API 5L PSL1&PSL2 | GR.B,X42,X46,X52,X60,X65,X70, etc. | Kuyendetsa mafuta ndi gasi |
Chithunzi cha ASTM A53 | G.A ,GR.B | Za Kapangidwe (Piling) | |||
ASTM A252 | GR.1, GR.2,GR.3 | ||||
Chithunzi cha EN10210 | S275JRH,S275J0H,S355J0H,S355J2H, etc. | ||||
Chithunzi cha EN10219 | S275JRH,S275J0H,S355J0H,S355J2H, etc. | ||||
Chithunzi cha JIS G3452 | SGP, etc | Mayendedwe a Low-pressure fluid | |||
Chithunzi cha JIS G3454 | STPG370,STPG410, etc | Kuyendetsa kwa High-pressure fluid | |||
Chithunzi cha JIS G3456 | STPG370,STPG410,STPG480, etc | kutentha zitsulo mipope |
Chitoliro choyitanidwa motere ndi cha ntchito yokakamiza pa kutentha kwapakati pa 350 ℃.
Chitoliro chopanda kanthu, zokutira zakuda kapena kuviika kotentha kwa zinki (zosinthidwa);
M'mitolo yokhala ndi gulaye ziwiri za thonje;
Zonsezi zimathera ndi otetezera mapeto;
Mapeto ang'onoang'ono, mathero a bevel (Pakafunika ndi wogula ndi S≤22mm, mapeto a chitoliro ayenera kugwedezeka, digiri: 30 ° (+5 ° ~ 0 °), ndipo makulidwe a khoma la muzu sakuchepetsedwa ndi <2.4 mm.);
Kuyika chizindikiro.
Chitetezo cha Pipe
Kulemba pa Mapaipi
Kulemba pa Mapaipi
Gulu ndi Chemical Composition (%)
Gulu | C≤ | Si≤ | Mn | P≤ | S≤ |
Chithunzi cha STPG370 | 0.25 | 0.35 | 0.30-0.90 | 0.040 | 0.040 |
Chithunzi cha STPG410 | 0.30 | 0.35 | 0.30-1.00 | 0.040 | 0.040 |
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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 | ||
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| Longitudinal | Chodutsa | Longitudinal | Chodutsa | |
Chithunzi cha STPG370 | 370 min | 215 min | 30 min | 25 min | 28 min | 23 min |
Chithunzi cha STPG410 | 410 min | 245 min | 25 min | 20 min | 24 min | 19 min |
Kulekerera kwa OD ndi WT
Gawo | Kulekerera pa OD | Kulekerera pa WT | ||
Chitoliro chachitsulo chozizira cha ERW | 24A kapena pansi | +/- 0.3mm | Pafupi ndi 3 mm
3 mm kapena kuposa | +/- 0.3mm
+/- 10% |
32A kapena kupitirira | +/- 0.8% |
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Kwa mapaipi a kukula mwadzina 350A kapena kupitilira apo, kulolerana kwa OD kumatha kutsimikiziridwa ndi kutalika kwa circumferential.Pankhaniyi, kulolerana kudzakhala +/- 0.5% |