dn(mm)          

             L (mm)                

         L1(mm)              

    50*50*50

               220

        110

    63*63*63

               234

        117

    90*90*90

               300

        150

    110*110*110

               300

        150

    125*125*125

               350

        175

    160*160*160

               426

        213

    200*200*200

               470

        235

    250*250*250

               556

        278

    315*315*315

               670

        335

    355*355*355

               764

        382

    400*400*400

               860

        430