Dibadda Ugu Dhexeeya ee Salka Dheerka loo isticmaalo karaamada dheerka ah

Qurux badan steel pipe waa lagu hirgeli karaa in ugu jiro dhammaan service ee carruurta ah oo ka mid ah 650°C, kuwaas oo muhiim ah u dirir kartaa qofka power generation, petrochemical refining, iyo furnaces ee dhalinyarada. Macluumaadkaas waxaa lagu horjeed karaa kartidka alloy steels ee ku yimid chromium, molybdenum, ama vanadium (misheerka, ASTM A335 P91, ASME SA213 T22) inuu ka caddeystirin doonaa ugaari iyo ugaarka carruurta ah. Proceska manufacturing ee seamless—either hot extrusion ama piercing—waxaa la celin kartaa weld seams, kuwaas oo la kulmay doonaa failure points ee dhexeeya ah ee ku saabsan stress. Xiriiraha ka dib ah ayaa mid ahaan high creep resistance (minimum 1% elongation fiirso 100,000 saacadda oo carruurta ah 550°C), thermal stability (low coefficient of expansion), iyo oxidation resistance (formation of protective oxide layers like Cr₂O₃). Standards ee ku jira ASTM A213 (boiler tubes) iyo EN 10216 2 (heat resistant steel pipes) waxay ka soo dirin doonaa chemical composition (misheerka, Cr 2.25–9%, Mo 1–1.25%) iyo mechanical tests (hardness, impact resistance carruurta ah). Surface treatments waxaa mid ahaan anti oxidation coatings (aluminum diffusion) carruur carruurta ah, markii dimensional precision (OD tolerance ±0.5%, wall thickness ±5%) waxaa la yaqaan doonaa compatibility ee flanged connections ee pipelines ee carruurta ah. Macluumaadkaas waa la yihiin superheaters, reheaters, iyo process heaters, kuwaas oo failure uu leedahay downtime ee ka mid ah, si ay rigorous quality control (eddy current testing, grain size analysis) ku sameyn doontaa inuu industry standards ka soo jeedo.