Max Length we can offer is 6000mm between OD10mm~56mm,5000mm between OD57mm~62mm,4000mm between OD63mm~88mm,3000mm between OD89mm~133mm.And their Standard available in our company are ASTM B337/338/861/862,And Chinese standard of GB3624-95 and GB3625-95.Material Grades are TA0/GR1,TA1/GR2,TC4/GR5,etc.Other subjects are welcome be Inquired by you!