Hot Rolled Steel Coils for tanks Hot Rolled Steel Coils for tanks Dream91 (Chemical) (OP) 8 Mar 18 20:33 Is it acceptable to use Hot Rolled Steel Coils SA 36 for API 650 tank for shell,bottom and roof ? RE: Hot Rolled Steel Coils for tanks JStephen (Mechanical) 9 Mar 18 05:31 It's not prohibited, but actual practices vary. RE: Hot Rolled Steel Coils for tanks Dream91 (Chemical) (OP) 9 Mar 18 10:36 How I know if it is ok for my case ? RE: Hot Rolled Steel Coils for tanks JStephen (Mechanical) 9 Mar 18 13:02 I'm assuming you mean cut-to-length plate from coils that has been flattened. How you know if it's okay is past experience using that product. I've known of fabricators that would use it for roofs and bottoms and not for shells, and others that would use it for shells but not for roofs or bottoms. The issues are flatness/waviness in the product as received, and possible increased distortion when welding due to residual stresses. RE: Hot Rolled Steel Coils for tanks IFRs (Petroleum) 10 Mar 18 04:22 If the de-coiled steel has been processed with a temper pass it should be OK for any portion of the tank. The issue is the residual stresses from de-coiling and flattening causing warping when these plates are welded. RE: Hot Rolled Steel Coils for tanks bimr (Civil/Environmental) 10 Mar 18 20:52 Coiled steel is typically thinner gauge metal than plate steel. One problem is that coiled material is more difficult to handle and limited by the width of the coil.