This weldingbacking is used with all one-side processes. Especially for those which do not demand back bead cleaning.
本衬垫可用于各种单面焊接工艺的位置，特别适用于不一定要求封底焊道的场合。
2
Where backing welds are radiographed for their full length to meet code requirements before clad side high alloy welding is done, this requirement may be omitted with prior approval of the Purchaser.