Kaararka birta birta smls a106 gr.b 4in Sch40
Fidintani markaa waxay noqotaa qayb ka mid ah nidaamka ku soo qaadista dareeraha (saliid, gaaska, uumi, kiimikooyinka, ...) hab aamin ah oo hufan, ka badan masaafado gaaban ama dhaadheer.
Tee waxaa sidoo kale loo yaqaanaa tuubbada timaha ku habboon ama tildhiga tuubada, wadajirka Tee, iwm.
Duflex Star StalASTM A694 Baararka Karbon ee Geel Boorta waxay leeyihiin guryo kaladuwan sababta oo ah jiritaanka walxaha ka kooban. Qaar ka mid ah guryaha laga dhaxlay baararka wareega waa kuwo wanaagsan, cimriga dheer, xasilloonida sare, xoogga sare, iwm, iwm, qalabka tareenka, qalabka kiimikada iyo warshadaha kale. Sidaa darteed, codsiyada warshadaha ayaa leh qulqulka siman ee shaqada.
Erayada sahlan, xusulka biloowga ee birta ah waa nooc ka mid ah tuubbada ku habboon laba tuubo. Ujeedada ugu weyni waa in la beddelo habka jihada. Sida aan ognahay, xusulka birta waxaa lagu soo saari karaa shahaadooyin kala duwan, sida caadiga ah waa 45 darajo bir bir ah oo bir ah, 90 darajo bir bir ah oo bir ah oo bir ah oo bir ah. Shahaado kale sida 60¡ã ama 120¡ã sidoo kale waxaa loo adeegsaday nidaamyada dhuumaha haddii ay jiraan shuruudo gaar ah.
Birta kaarboonka ee loo siman yahay tee astm a234 wpb 6 gudaha
| Xiga: | Nb | WPC | J | P | Mn | Si | Cr | Mo | Ni | S | Cut |
| Lao | 0.3 | 0.29-1.06 | 0.05 | 0.058 | La wadaag: | 0.4 | 0.15 | 0.4 | 0.4 | 0.08 | 0.02 |
| WPB | 0.35 | 0.29-1.06 | 0.05 | 0.058 | La wadaag: | 0.4 | 0.15 | 0.4 | 0.4 | 0.08 | 0.02 |
| Habyahan | 0.05-0.15 | 0.30-0.60 | 0.03 | 0.03 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | – | – | – | – |
| Nala soo xiriir | 0.05-0.20 | 0.30-0.80 | 0.04 | 0.04 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | – | – | – | – |