Drawn brass tubes are divided into five grades according to chemical composition: H96, H62, H68, HSn62-1, HSn70-1. The length and allowable deviation of the tube are as follows: for irregular length, the length of the tube with an outer diameter of ≤50mm is 1000~7000mm, and the length of the tube with an outer diameter of >50mm se 500 ~ 6000mm. Longè longè yo fiks oswa miltip yo ta dwe nan seri a nan longè iregilye, ak devyasyon ki akseptab nan longè a se 15mm. Longè miltip yo ta dwe ajoute ak kantite lajan pou si, epi chak kantite lajan pou si se 5mm. Tib kwiv trase yo lajman ki itilize nan sektè endistriyèl la pou trase tib kwiv.
