A.For annealed drawn tubes the ratio of outer diameter to thickness is no more than 15.
A.For annealed drawn tubes the ratio of outer diameter to thickness is no more than 15.
退火态拉制管外径与壁厚之比不小于15者。
A.For annealed drawn tubes the ratio of outer diameter to thickness is no more than 15.
退火态拉制管外径与壁厚之比不小于15者。