Shimfidar, adadin, diameters, girman haɗi da matsayi na matsakaicin ƙuduri ya kamata ya dace da ƙa'idodin masana'antu, kuma ya dace da ƙofar da sauran haɗin haɗin haɗin haɗin haɗin haɗin haɗin haɗin haɗin haɗin haɗin haɗin haɗin haɗin haɗin ha
Common sunan diamita daga DN300 × DN400 zuwa 6000 × 5000 hanyoyin da aka yi da angle karfe;
Hanyar da aka yi ta hanyar 7000 × 4600 zuwa 11000 × 6600 ta hanyar da aka yi da karfe.
A daban-daban amfani lokuta da kwanciyar hankali, ya kamata a zaɓi daban-daban kayan;
Lokacin da zafin jiki t≤300 ℃, zaɓi kayan Q235-A, F;
Lokacin da zafin jiki 300 ℃ <t≤400 ℃, zaɓi kayan Q235-A / B
Lokacin da zafin jiki 400 ℃ <t≤475 ℃, zaɓi kayan 10 ko Q345 (16Mn).