Astm A335 yakajairwa fungidziro yekusina musono ferritic alloy-simbi pombi yepamusoro-tembiricha sevhisi.
ASTM A335 chiyero chinopihwa pasi peiyo yakatarwa zita A 335/A 335M; nhamba yacho pakarepo inotevera kusarudzwa inoratidza gore rekugamuchirwa kwepakutanga kana, munyaya yekudzokorora, gore rekudzokorora kwekupedzisira. Nhamba iri mumaparenthesi inoratidza gore rekupedzisira remvumo. A superscript epsilon ( ュ) inoratidza shanduko yekunyora kubva pakudzokorora kwekupedzisira kana kubvumidzwazve.
Scope
1.1Ichi chirevo chinovhara zita (avhareji) madziro asina seamless alloy-simbi pombi yakanangana nepamusoro-tembiricha sevhisi (Mote 1). Pombi yakarairwa kune iyi yakatarwa ichave yakakodzera kukotama, flanging (vanstoning), uye yakafanana maoparesheni ekugadzira, uye yefusion welding. Sarudzo ichaenderana nedhizaini, mamiriro ebasa, zvivakwa zvemakanika, uye hunhu hwepamusoro-tembiricha.
CHERECHEDZA 1 Α Appendix X1 inodonongodza saizi nekukora kwemadziro epombi inogona kuwanikwa pasi pezvinoitwa zvekutengesa.
1.2 Magiredhi akati wandei emasimbi eferritic (Cherechedzo 2) akafukidzwa.
Note 2
ΑFerritic simbi mune iyi tsanangudzo inotsanangurwa seyakaderera uye yepakati-alloy simbi ine kusvika uye inosanganisira 10％ chromium.
1.3 Zvekuwedzera zvinodiwa (S1 kusvika kuS7) zvezvaunosarudza zvinopihwa. Izvi zvekuwedzera zvinodiwa zvinoda kuti bvunzo dzekuwedzera dziitwe, uye pazvinenge zvichidikanwa, zvichataurwa muhurongwa pamwe chete nehuwandu hwebvunzo dzinodiwa.
1.4 Hukoshi dzinotaurwa mune ingave inch-pondo mayunitsi kana maSI mayunitsi anofanirwa kutariswa akasiyana seyero. Mukati mezvinyorwa, maSI mayuniti anoratidzwa mumabhuraketi. Hukoshi dzinotaurwa muhurongwa hwega hwega hadzina kuenzana chaidzo; saka, imwe neimwe system inofanirwa kushandiswa yakazvimiririra kubva kune imwe. Kubatanidza kukosha kubva kune maviri masisitimu kunogona kukonzera kusaenderana nekutsanangurwa. Iwo inch-pondo mayunitsi achashanda kunze kwekunge "M" kudomwa kweiyi kutsanangurwa kwatsanangurwa muhurongwa.
Ziva 3ΑMugadziri asina dimensionless NPS (yezita pombi saizi) akatsiviwa mune iyi chiyero kune echinyakare mazwi akadai se "zita dhayamita," "saizi," uye "saizi yezita."
Material & Kugadzira
Pipe inogona kunge ichipisa yakapera kana kutonhora inokweverwa pamwe nekupedzisa kupisa kurapwa kwakanyorwa pazasi.
Transverse kana Longitudinal Tension Test uye Flattening Test, Hardness Test, kana Bend TestMechanical Miedzo Yakatsanangurwa.
Nekupisa kwezvinhu zvakabatwa muchoto chemhando yebatch, miyedzo ichaitwa pa5% yepombi kubva kune yega yega inobatwa. Pazvijenya zvidiki, pombi imwe chete ichaongororwa.
Pakupisa kwezvinhu zvinorapwa nekuenderera mberi, miedzo ichaitwa pahuwandu hwakakwana hwepombi kuti iite 5% yemujenya, asi pasina mhosva isingasviki 2 pombi.
Notes for Hardness Test:
P91 haizove nekuoma kusingadariki 250 HB/265 HV [25HRC].
Zvinyorwa zveBend Test:
Yepombi ine dhayamita inodarika NPS 25 uye iyo dhayamita kusvika kumadziro ukobvu reshiyo iri 7.0 kana zvishoma ichaiswa pakuyedzwa kwekubhenda pachinzvimbo cheyedzo yekubata kumeso.
Imwe pombi ine dhayamita yakaenzana kana kudarika NPS 10 inogona kupihwa bvunzo yekubhenda panzvimbo yeyedzo yekubata kumeso zvichienderana nemvumo yemutengi.
Iyo bend test samples ichakotamiswa pakamuri tembiricha kuburikidza ne180 pasina kuputika kunze kwechikamu chakabhenda.
Hydrostatic Test
Uyo mukati mekupenyeka kwacho kunofanira kuva mamirimita 25.
Hurefu hwega hwega hwepombi huchayedzwa Hydro, pasarudzo yekugadzira isingakuvadzi yemagetsi inogona kushandiswa.
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