Sababo la xiriira tonnage qalab weyn oo looga baahan yahay habka buraash Haydarooliga eebir aan bir lahayn, waxaa inta badan loo isticmaalaa soo saarida tee birta ahama oo leh dhumucdiisuna waxay ka yar tahay dn400 gudaha Shiinaha.

Qalabka samaynta ee lagu dabaqi karo waa birta kaarboon yar, birta aluminiumka hoose iyo birta aan fiicnayn oo leh dabacsanaan shaqo qabow oo hooseeya, oo ay ku jiraan qaar ka mid ah walxaha birta ah ee aan birta ahayn, sida naxaasta, aluminium, titanium, iwm.

Marka loo eego heerka wax soo saarka, waxaa loo qaybin karaa heerka qaran, heerka korantada, heerka biyaha, Standard American, Standard German, Standard Japanese, Standard Russian, iwm, sida soo socota: GB / t12459, GB / T13401, ASME B16 9. SH3408, SH3409,HG/T21635,DL/T 695,SY/T 0510,DIN 2615.