ASTM A333 ASTM A106/A53/API 5L GR.BX46, X52 Q345D, Q345E) 1. Paipu kila maʻemaʻe maʻamau ASTM A53 GR.B, helu kila: SA53 B, nā kikoʻī: 1/4′-28′, 13.7-711.2. mm 2. paipu kila maʻemaʻe ʻole ASTM A106 GR.B no nā hana wela kiʻekiʻe, helu kila: SA106B, spec...
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