● 材料:316L,VIM/VAR(无缝管) ● 等级:EP(电解抛光),BA(光亮退火) ● 尺寸:EP:美标ASTM:A-269:1/4°-3" ● 日标:G3459:15A-65A ● Ba:美标ASTM:A-269:1/4"-4" ● 日标:15A-100A