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Oil Pipeline spare parts exportor
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Stud Material: ASTM A193 B7
Surface Finishing: Black Coated.
Size: 3/4Inch
Material Grade: L4 Grade、8 Grade、10 Grade、12 Grade、45#、30CrMo、35CrMo、A194 Gr.2H、A194 Gr. 2HM A194 4、A194 7、 A194 7M、 A194 16 、A194 8 、A194 8A、A194 8M 、A194 8MA