不锈钢金属波纹管膨胀节波纹补偿器法兰伸缩节 ¥345.00 补偿器不锈钢法兰膨胀节 波纹伸缩节衬四氟PTFE ¥1300.00 1Cr5Mo 12Cr5Mo Cr5Mo无缝热压弯头GB/T12459标准 ¥150.00 ASTM T5 P5 12Cr5Mo1弯头90° 45° 1.5D 1D ¥150.00 ASTM T9 P9 Cr9Mo 12Cr9Mo1 12Cr9MoNT弯头ASME 16.9 ¥255.00 1Cr9Mo 12Cr9Mo Cr9Mo无缝热压弯头GB/T12459标准 ¥210.00