ASTM A312 Kowiri tira Pipe kaiwhakarato Tirohia te Kowiri tira Weld/ ERW Pipe whakatauranga pehanga me te rahi Paipa Kowiri tira ASTM A312 Kowiri tira Paipa Tukore SA 213 SS paiherea ngongo Wā tuku: Noema-22-2021