ASTM A53chiyero ndeyeAmerican Society yeKuedza uye Zvishandiso. Iyo chiyero inovhara akasiyana saizi yepombi uye ukobvu uye inoshanda kumapombi masisitimu anoshandiswa kutakura magasi, zvinwiwa uye zvimwe zvinwiwa. ASTM A53 yakajairwa pombi inowanzoshandiswa munzvimbo dzemaindasitiri nemuchina, pamwe neindasitiri yekuvaka yekugovera mvura, kudziyisa uye mhepo yekufemesa.

Maererano neASTM A53chiyero, mapaipi anogona kukamurwa kuva mhando mbiri: Type F uye Type E. Rudzi F haina musono pombi uye mhando E imagetsi welded pombi. Mhando dzese dziri mbiri dzepombi dzinoda kurapwa kwekupisa kuti ive nechokwadi chekuti ma mechanic zvimiro uye kuumbwa kwemakemikari zvinosangana nezvinodiwa. Pamusoro pezvo, izvo zvinodikanwa zvepombi zvinofanirwa kuenderana nezvinopihwa zveASTM A530/A530M standard kuti ive nechokwadi chekutaridzika kwayo.

Izvo zvemakemikari zvinodiwa zveASTM A53 zvakajairika mapaipi ndeaya anotevera: kabhoni yemukati haipfuure 0.30%, manganese yemukati haipfuure 1.20%, phosphorus yemukati haipfuure 0.05%, sulfur yemukati haipfuure 0.045%, chromium yemukati haipfuure. 0.40%, uye nickel yemukati haipfuure 0.40%, iyo mhangura yemukati haipfuure 0.40%. Izvi zvirambidzo zvekuumbwa kwemakemikari zvinovimbisa kusimba, kusimba uye kusakara kwepombi.

Panyaya yezvivakwa zvemuchina, ASTM A53 yakajairwa inoda kuti simba rekusimba uye goho remapombi risiri pasi pe330MPa uye 205MPa zvichiteerana. Uye zvakare, iyo elongation mwero wepombi inewo zvimwe zvinodiwa kuti ive nechokwadi chekuti haina kukurumidza kuputsika kana deformation panguva yekushandiswa.

Pamusoro pekuumbwa kwemakemikari uye zvivakwa zvemuchina, iyo ASTM A53 yakajairwa inopawo yakadzama mirau pahukuru uye kutaridzika kwemhando yemapombi. Saizi yepombi inotangira pa1/8 inch kusvika 26 inches, ine akasiyana emadziro ukobvu sarudzo. Kutaridzika kwemhando yepombi inoda nzvimbo yakatsetseka isina oxidation iri pachena, kutsemuka uye kukanganisa kuti ive nechokwadi chekuti haizobvisike kana kukuvadzwa panguva yekuisa uye kushandiswa.

Kazhinji, iyo ASTM A53 yakajairwa chiyero chakakosha chekabhoni simbi mapaipi. Inovhara zvinodiwa zvemakemikari ekugadzirwa, mechanical properties, zviyero uye kuonekwa kwehutano hwepombi. Mapombi anogadzirwa zvinoenderana nechiyero ichi anogona kuve nemhando yakagadzikana uye yakavimbika kuita, uye akakodzera pombi masisitimu munzvimbo dzakasiyana dzeindasitiri nekuvaka. Kugadzira uye kuita kweASTM A53 zviyero zvakakosha kwazvo kuti ive nechokwadi chekushanda kwakachengeteka kwepombi uye kusimudzira kunaka kwekuvakwa kweprojekiti.