Chifukwa chachikulu zida tonnage chofunika kuti hayidiroliki bulging ndondomekochitsulo chosapanga dzimbiri, amagwiritsidwa ntchito makamaka popanga tiyi wachitsulo chosapanga dzimbiri ndi makulidwe a khoma lochepera dn400 ku China.

Zida zopangira zomwe zimagwiritsidwa ntchito ndi chitsulo chochepa cha carbon, chitsulo chochepa cha aloyi ndi chitsulo chosapanga dzimbiri chokhala ndi chizolowezi chokhazikika chozizira kwambiri, kuphatikizapo zitsulo zina zopanda chitsulo, monga mkuwa, aluminium, titaniyamu, ndi zina zotero.

Malinga ndi muyezo kupanga, zikhoza kugawidwa mu muyezo dziko, muyezo magetsi, madzi muyezo, American Standard, German muyezo, Japanese muyezo, Russian muyezo, etc., motere: GB / t12459, GB / T13401, ASME B16 9, SH3408, SH3409,HG/T21635,DL/T 695,SY/T 0510,DIN 2615.