Inquiry (采购产品): 30 Steel Pipe Can we specify ASTM A53, Grade B for a 30" Steel Pipe with a 1/2" wall thickness? The ASTM Spec has tables to 26" Diameter, so I don't know if the 30"diameter for a sign pole should be another steel specification. If you have time could you give me your opinion. Thanks. Gary Anderson email: ganderson@dot.state.nv.us **** Hidden Message ***** gary anderson NV 89712 USA Company: NDOT E-mail: ganderson@dot.state.nv.us **** Hidden Message ***** ganderson@dot.state.nv.us
