Dhuumaha birta ee ERW welded: tuubo welded iska caabin ah oo heersare ah, oo laga sameeyay saxan bir ah oo kulul, iyada oo loo marayo samaynta joogtada ah, foorarsiga, alxanka, daaweynta kulaylka, cabbirka, toosinta, goynta iyo hababka kale. Astaamaha: Marka la barbar dhigo tollayn spiral bir alxan leh oo quustay...
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