ASTM A778 Dhuumaha Birta
Qeexitaanku wuxuu daboolayaa tollayn toosan iyo tollayn dabada dabada welded oo aan la xirin austenitic ahamaama alaabada tuubada ee loogu talagalay heerkulka hooseeya iyo dhexdhexaadka ah iyo adeega daxalka halkaasoo daawaynta aan loo baahnayn iska caabbinta daxalka.Alaabta tuubada ah waa in laga sameeyaa xaashi bir ah oo fidsan, gariirad, ama saxan iyada oo loo marayo habka alxanka ee gaashaanka.
Birtayadu waa iibiye la aqoonsan yahay iyo qaybiyaha ASTM A778 Austenitic Stainless Steel Tubes, kaas oo leh tiro sifooyin waaweyn oo lagu bixiyo sida adkeysiga, xoogga sare, caddaynta miridhku, iyo wixii la mid ah.Heerka sare ee birta iyo tignoolajiyada sare ayaa lagu dhex daray soo saarista tuubooyinkan.Waxaan u soo bandhignaa alaabooyinkan si ay u dhammaystiraan dusha sare ee gaarka ah si ay u eegaan muuqaal heer sare ah iyo iska caabin heersare ah oo ka dhan ah daxalka.Soo Bandhigay ASTM A778 Tubooyinka Welded waxaa soo saaray khubaradayada la isku halayn karo iyadoo la adeegsanayo heerka ugu fiican ee birta aan la taaban karin.Si loo waafajiyo shuruudaha kala duwan ee macaamiisha, waxaanu ku siinaynaa tuubooyinkan cabbirro kala duwan, tilmaamo iyo darajooyin.Macmiilku wuxuu naga heli karaa alaabooyinkan qaabab kala duwan sida leydi / oval / wareega / laba jibbaaran iyo qaybo kale oo muuqaal ah oo la xidhiidha shuruudahooda.Si aan u xoojino booskeena, waxaan si wax soo saar leh u bixineynaa tiro balaadhan oo tayo leh oo la hubo oo tubooyinkan ah.Annaga oo ay taageerayaan aqoontayada weyn ee warshadaha, waxaanu u soo gudbinaynaa Tubooyinkan macaamiisheena sharafta leh.
Dhuumaha birta ah waxaa lagu soo saaray iyadoo la isticmaalayo agab tayo sare leh iyo tignoolajiyad horusocod ah oo tandem ah si loo xaqiijiyo heerarka wadajirka ah.Dhuumaha birta ah ee aan soo bandhigno waxaa lagu eegaa tayada ka hor inta aan la siin macaamiishayada.Tuubooyinkan ASME SA 778 waxay bixiyaan astaamo aad u wanaagsan oo ay ka mid yihiin iska caabbinta miridhku, adkaysiga, adkaysiga, aan daxalka ahayn, xoog adkaysiga sare leh, dhammays wanaagsan, la isku halayn karo, iska caabin ka soo horjeeda naaxinta, dhammays fiican, dhismo adag, Aad u adkaysi leh, iska caabin sare, dheer nolosha, Qiimaha waxtarka leh, fududahay in la rakibo, Waara, Xoog sare, U adkeysan kara cadaadiska sii kordhaya iyo wixii la mid ah.
Tilmaamahani waxa uu daboolayaa alaabada tuubada ee aan la daabicin ee 3 inji (75 mm) ilaa 48 inch.(1200 mm) dhexroorka ka baxsan iyo dhumucda derbiga magacaaban ee 0.062 in. (1.5 mm) ilaa 0.500 in. (12.5 mm) loo soo saaray sifayntan.Alaabooyinka tubbada leh dhexroorka kale, ama dhumucda gidaarka, ama labadaba waa la goyn karaa waa haddii ay u hoggaansanto dhammaan shuruudaha kale ee qeexitaankan.
| Halabuurka Kiimikada (%) | |||||||||||
| Darajo | C | Si | Mn | P | S | Cr | Ni | Mo | N | Cu | |
| 201 | ≤0.15 | ≤0.75 | 5.5 ~ 7.5 | ≤0.060 | ≤0.03 | 16.00-18.00 | 3.5 ~ 5.5 | - | - | 0.08 | 1.5 |
| 202 | ≤0.15 | ≤1.00 | 7.5 ~ 10.00 | ≤0.060 | ≤0.03 | 17.00-19.00 | 4.0 ~ 6.0 | - | ≤0.25 | ||
| 301 | ≤0.15 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 16.00-18.00 | 6.00-8.00 | - | |||
| 302 | ≤0.15 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 17.00-19.00 | 8.00-10.00 | - | |||
| 304 | ≤0.07 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 18.00-20.00 | 8.00 ~ 10.50 | - | |||
| 304L | ≤0.030 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 18.00-20.00 | 9.00-13.00 | - | |||
| 310S | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 24.00-26.00 | 19.00-22.00 | - | |||
| 316 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 16.00-18.00 | 10.00-14.00 | 2.00-3.00 | |||
| 316L | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 16.00-18.00 | 12.00-15.00 | 2.00-3.00 | |||
| 321 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 17.00-19.00 | 9.00-13.00 | - | |||
| 430 | ≤0.12 | ≤0.75 | ≤1.00 | ≤0.040 | ≤0.03 | 16.00-18.00 | - | ||||
| 2205 | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.030 | ≤0.015 | 22.00-23.00 | 4.5 ~ 6.5 | 2.5 ~ 3.5 | |||
| 2507 | ≤0.03 | ≤0.08 | ≤1.20 | ≤0.035 | ≤0.015 | 24.00-26.00 | 6.00-8.00 | 3.0 ~ 5.0 | |||
| 904L | ≤0.02 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.035 | 19.00-23.00 | 23.00-28.00 | 4.0 ~ 5.0 | 1.0 ~ 2.0 | ||
| INCONEL 028 | ≤0.03 | ≤1.00 | ≤2.50 | ≤0.030 | ≤0.030 | ≤28.0 | ≤34.0 | ≤4.0 | ≤1.4 | ||
| LACAGTA 400 | ≤0.30 | ≤0.5 | ≤2.00 | - | ≤0.024 | - | ≥63.0 | - | ≤34.0 | ||
| INCONEL 800 | ≤0.10 | ≤1.00 | ≤1.50 | - | ≤0.015 | ≤23.0 | ≤35 | 4.0 ~ 5.0 | - | ≤0.75 | Ti≤0.6 Al≤0.6 |
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