美利体育登录入口官网:DIN 86341:2000
船舶与海上技术.超轻型活动法兰和对焊发兰.DN32-DN50(最大到PN25)和DN65-DN125(最大到PN10)钢和不锈钢制对焊法兰
Ships and marine technology - Loose flanges and welding necks extra light duty - Welding necks made from steel and stainless steel DN 32 to DN 50, up to PN 25, DN 65 to DN 125, up to PN 10