1. Afụ
Afụ na-abụkarị n'etiti bead weld, na hydrogen ka na-ezo n'ime igwe weld n'ụdị afụ. Isi ihe kpatara ya bụ na waya ịgbado ọkụ na flux nwere mmiri dị n'elu ma jiri ya mee ihe na-enweghị ihicha. Ọzọkwa, ugbu a dị oke elu n'oge usoro ịgbado ọkụ. Obere, ịgbado ọkụ ọsọ dị oke ngwa ngwa, na nke a ga-emekwa ma ọ bụrụ na accelerated ike nke metal accelerated.

2. Undercut
Undercut bụ uzo V nke na-apụta na nsọtụ nke weld n'akụkụ etiti nke weld. Isi ihe kpatara ya bụ na ịgbado ọkụ ọsọ, ugbu a, voltaji, na ọnọdụ ndị ọzọ na-ekwesịghị ekwesị. N'ime ha, ịgbado ọkụ ọsọ dị oke elu na nke ugbu a adịghị mma. Ọ dị mfe ịkpata ntụpọ ndị a kpụrụ akpụ.

3. Thermal cracks
Ihe na-akpata mgbawa ọkụ bụ mgbe nrụgide weld dị oke elu, ma ọ bụ mgbe SI silicon element na weld metal dị oke elu, enwere ụdị sọlfọ ọzọ na-agbawa, oghere ahụ bụ efere nwere mpaghara nkewa sọlfọ siri ike (bụ nke Steel na-esi ísì dị nro), mgbawa nke sulfide na-abanye na igwe weld n'oge usoro ịgbado ọkụ.

4. Enweghi ike ịgbado ọkụ penetration
Ihe nkpuchi ígwè nke ime ime na n'èzí ezughị ezu, na mgbe ụfọdụ, ịgbado ọkụ adịghị abanye.
Usoro mgbako maka ọkpọkọ nchara welded: ( dayameta dị n'èzí - ọkpụrụkpụ mgbidi ) * ọkpụrụkpụ mgbidi * 0.02466 = arọ kwa mita nke ọkpọkọ welded {kg
Galvanized ígwè pipe ngụkọta oge: (mpụta dayameta – mgbidi ọkpụrụkpụ) * mgbidi ọkpụrụkpụ * 0.02466 * 1.06 = arọ nke welded ígwè ọkpọkọ kwa mita {kg