... .various kind of shaft quenching, depth of quenching1.5-3mm,dia.Φ 10mm-250mm,inside bore quenching. 2. Φ5-Φ12wire annealing. ... the lead manufacturer in china fastener line,Gem-Year Industrial Co., Ltd use our machine. 2.depth of quenching required more than ... down,fire-fighting apparatus and materials,gas-tank, oxygen bottle,dia.Φ40mm-Φ150mm-250mm, large-scale elbowtube end expansion. 4.excavatorshovel ...