rebar kalen 20mm waxaa jirin reerka dhammaan oo ku jira dhexe cusub 20mm (0.79 duq) oo ay ku yimid raad ah ee ku jira dhexe xaalad iyo ka saabsan karaamo, wuxuu ugu baahan yihiin qof kasta oo ahayd in lagu soo baxaan xaalad iyo la'aanshisada. Waa la mid ah kartid gacantaas oo ku jira HRB 400 (400 MPa yield), ASTM A615 Grade 60 (414 MPa), ama BS 8666 Grade 500B, iyadoo wuxuu ku jiraan reerka dhammaan oo ku jira dhexe cusub 20mm ee loo sameeyo dibadda badbaadada (misalaa, bond stress 1.2MPa ee GB/T 1499.2). Dibadda adeegga ah waxaa ku jirin: xaaladaha concrete beams, column reinforcements filbixooda mid rise buildings, iyo foundation piles projectaadaha caawimaadka ah. Waxa kale oo ku jiran suppliers waxaa ku yimid optiga ah ee uncoated iyo coated: epoxy coated marin environments (ASTM A775), galvanized moderate corrosion (ASTM A767), iyo bare steel dry climates. Xogta amilka ah waxaa ku jirin: 1) cutting to project lengths (tolerance ±5mm); 2) bending into L/ U shapes for corner reinforcements; 3) bundled packaging (2–3 tons per bundle) with moisture resistant wrapping for overseas shipment. Compliance documentation waxaa ku jirin mill test reports (MTR), certification of conformity to target standards, iyo third party inspection certificates (SGS, Bureau Veritas), oo ay ku noolow customs clearance iyo project approval. Dibadda gobollada ee rebar kalen 20mm waxaa u tahay sidoo kale ee infrastructure growth emerging markets, iyadoo suppliers waxaa ku yimid pricing dheerka ah through economies of scale iyo direct mill partnerships, oo ay ku noolow quality caddeed iyo timely delivery for large scale projects.