ASTM A333 ASTM A106/A53/API 5L GR.BX46, X52 Q345D, Q345E) 1. Gabaɗaya maƙasudin ƙarfe bututu ASTM A53 GR.B, lambar ƙarfe: SA53 B, ƙayyadaddun bayanai: 1/4′-28′, 13.7-711.2 mm 2. Sumul karfe bututu ASTM A106 GR.B ga high zafin jiki ayyuka, karfe lambar: SA106B, spec ...
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