ASTM A333 ASTM A106/A53/API 5L GR.BX46, X52 Q345D, Q345E) 1. Kusudi la jumla la bomba la chuma isiyo na mshono ASTM A53 GR.B, nambari ya chuma: SA53 B, vipimo: 1/4′-28′, 13.7-7112. mm 2. Bomba la chuma lisilo imefumwa ASTM A106 GR.B kwa shughuli za joto la juu, nambari ya chuma: SA106B, spec...
Soma zaidi