Chithunzi cha ASTM A179 (Chithunzi cha ASME SA179) ndi chubu chachitsulo chopanda mpweya chozizira chomwe chimakokedwa kuti chigwiritsidwe ntchito posinthanitsa kutentha kwa tubular, condensers, ndi ntchito zofananira zotengera kutentha.
ASTM A179 ndi ASME SA179 ndi miyeso iwiri yofanana kwathunthu.Pofuna kumasuka, ASTM A179 imagwiritsidwa ntchito pansipa.
ASTM A179 ndiyoyenera mapaipi achitsulo okhala ndi mainchesi akunja a 1/8″ - 3″ [3.2mm - 76.2mm].
Botop Steelndi chitoliro chachitsulo chosasokonezeka chochokera ku China, chokupatsani kusankha kwakukulu kwamapaipi apamwamba a ASTM A179/ASME SA179 ozizira osasunthika.
Ndife odzipereka kuti tipatse makasitomala athu zinthu zabwino kwambiri ndi ntchito kuti zitsimikizire kuti ntchito zanu zikuyenda bwino.Sankhani Botop Steel, ndipo sankhani mnzanu wodalirika.
Tanena kale kuti A179 imapangidwa pogwiritsa ntchito njira yopangira yopanda msoko.Kodi ndi njira ziti zomwe zimakhudzidwa ndi kupanga kosasunthika kozizira?Chonde onani zotsatirazi ndondomeko otaya tchati.
Muyeso wa ASTM,A556imagwiritsanso ntchito njira zopangira zopanda msoko zomwe zimakokedwa ndi ozizira koma makamaka zowotchera madzi a tubular.Amene ali ndi chidwi angapeze zambiri.
Pambuyo pojambula komaliza kuzizira, machubu achitsulo amatenthedwa pa kutentha kwa 1200°F [650°C] kapena kupitirira apo.
| Standard | C | Mn | P | S |
| Chithunzi cha ASTM A179 | 0.06-0.18% | 0.27-0.63% | 0.035 % | 0.035 % |
ASTM A179 salola kuwonjezera zinthu zina pakupanga mankhwala.
Kuuma kwa chubu chachitsulo sikuyenera kupitirira 72 HRBW (kuuma kwa Rockwell).
| Kulimba kwamakokedwe | Zokolola mphamvu | Elongation | Mayeso a Flattening | Kuyesa kwa Flaring | Mayeso a Flange |
| min | min | mu 2 in. kapena 50 mm, min | |||
| 47 ndi [325 MPa] | 26 ksi [180MPa] | 35% | Onani ASTM A450, Gawo 19 | Onani ASTM A450, Gawo 21 | Onani ASTM A450, Gawo 22 |
Chitoliro chilichonse chidzayesedwa kuyezetsa kuthamanga kwa hydraulic kapena, ngati wogula anena, kuyesa kwamagetsi kosawononga kungagwiritsidwe ntchito m'malo mwake.
Chubu chachitsulo chimasunga kukakamiza kwa ma 5s osatulutsa.
Kuthamanga kwa mayeso kumawerengedwa pogwiritsa ntchito njira iyi:
Inchi - Mapaundi Magawo: P = 32000 t/D
SI Mayunitsi: P = 220.6t/D
P = hydrostatic test pressure, psi kapena MPa;
t = makulidwe a khoma, mkati kapena mm;
D = kutchulidwa kunja kwake, mkati kapena mm.
Otsatirawa ndi ma CD wamba a A179, ndipo zotengera makonda zitha kuperekedwanso malinga ndi zomwe polojekiti ikufuna.
Chitoliro chopanda kanthu, zokutira zakuda (zosinthidwa);
6" ndi makulidwe ocheperako M'matumba okhala ndi ma slings awiri a thonje, makulidwe ena otayirira;
Zonsezi zimathera ndi otetezera mapeto;
Mapeto omveka, mapeto a bevel;
Kuyika chizindikiro.
