BS 4570:1985 PDF

1   Scope This British Standard specifies requirements for the fusion welding of steel castings when it is used:

a) to rectify a casting as part of the normal production process;

b) to rectify a casting that has been in service;

c) for the joining together of steel castings by fusion welding, where the sub-sections of the final fabrication are designed for that purpose or when welding is introduced at the foundry planning stage.

This standard covers the manual metal-arc, gas-shielded, self-shielded and submerged-arc welding of the materials given in Table 1, but additional guidance for other processes has been given in some clauses. Although this standard does not directly cover the welding of steel castings to wrought steels, nor the surface deposition of weld metal for applications such as corrosion resistance and hard facing, it may be used as a guide for the fabrication by joining of these forms of steel involving similar and dissimilar metals. In addition to the definitive requirements, it also requires the items detailed in clause  2 to be documented. For compliance with this standard, both the definitive requirements and the documented items have to be satisfied.

NOTE The titles of the ...