ASME SFA-5.12- m8 `9 r4 k% z" @
用于弧焊和切断的钨和钨合金电极规范% p. q' A3 H7 T- T" g
Specification for Tungsten and Tungsten-Alloy Electrodes for Arc Welding and Cutting6 j( f" Y3 i0 v* }
; ~: x+ J! t2 R2 y9 D* `ISO 6848:2004 specifies requirements for classification of nonconsumable tungsten electrodes for inert gas shielded arc welding, and for plasma welding