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OD: 100-480MM ID: 80--460 length: 400-1240mm using for the water pump and purification Quartz glass has a high degree of chemical stability, in addition to hydrofluoric acid and hot phosphoric acid addition, not only in normal temperature, but also at a high temperature resistance are also a variety of acid, aqua regia, neutral salt, sulfur and carbon erosion, chemical stability than the nickel-chromium alloy and ceramic large 150 times, is the best acid-resistant material.In 800oC below, in addition to PbO outside the quartz glass is virtually unaffected by metal-oxide erosion; 800oC and above and Nzo, R2O react; 900oC and above and Boa, MgO, Fe2O3 reacts. 1000oC above and AI2O3, Cano reacts. Molten metal to the corrosive nature of quartz glass is different, for Ag, Au, Cd, Hg, Pt, Mo, Sn, W, Zn resistant to erosion, and Ca, more than 600oC reacts with Al, Le, Mg in the above 800oC react, but not with Li that react in the above 250°c. Silicon on quartz glass has eroded, while the carbon in the above 1800°c. react with the quartz glass, in the 850oC below, quartz glass and Na2CO3 not react, 900°C below, quartz glass and Na2So4 react, while in 800oC, when sodium nitrate, anhydrous borax , calcium chloride a strong erosion of quartz glass.