Standard: ASTM A500 (ASME SA500) Babban maƙasudi: wutar lantarki, man fetur, kamfanonin sinadarai, babban zafin jiki, ƙarancin zafin jiki, tsarin bututu mai jure lalata. Babban samfuran karfe / karfe: Gr.A; Gr.B; Gr.C. Ƙayyadaddun bayanai: OD: 10.3-820 mm, kauri bango: 0.8 zuwa 75 mm, L ...
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