焊口规格表格
DN达因焊口规格焊口规格焊口规格SCH80壁厚达因SCH80S壁厚达因SCH40S壁厚150.521.3*3.63.60.521.3*3.63.60.521.3*2.92.9200.7526.9*4.
焊口规格表格