1. Material :carbon steel, alloy steel carbon steel: astm a234 wpb, wpc; astm a420 wpl9, wpl3, wpl6, wphy-42, wphy-46, wphy-52, wphy-60, wphy-65, wphy-70. alloy steel: astm a234 wp1, wp11, wp12, wp22, wp5, wp9, wp91 2. Standard :asme b16.9, din2605, gost17375, en10253-1, jis b2311 3.Size :1/4-48’’ 4.Schedule:sch std, xs, xxs, sch 10 ~ sch 160 5.Moq : 1 piece 6.Deliery time:10 days.