1) m karfe bututu geometry dubawa

Diamita na bututun ƙarfe mara ƙarfi, kaurin bango da lanƙwasa, tsayin kan tebur ɗin gwaji tare da caliper, micrometer, da lankwasa da ƙafa, tsawon tef ɗin da za a duba.

Diamita na waje, kaurin bango da tsayi kuma na iya amfani da na'urar aunawa ta atomatik (kamar diamita ta atomatik, kauri, na'urar auna tsayi) a ci gaba da gwaji.Marigayi a cikin 1980 na karni na 20 na samar da bututun ƙarfe maras nauyi gabaɗaya akan layi akan diamita ta atomatik, na'urar auna kauri, a cikin yankin gamawa, tsayi da kayan awo.OCTG madaidaicin zaren zaren bututu shima yana buƙatar bincika.

(2) bututun ƙarfe maras kyau, dubawa na waje

Duban gani da gani na ciki da waje ana amfani da shi gabaɗaya, filaye ban da duban gani, akwai kuma Prism mai nuni don dubawa.Wasu bututun ƙarfe maras amfani na musamman, wanda kuma ake kira don ɗaukar gwajin mara lalacewa, gami da Eddy halin yanzu, yayyowar maganadisu, ultrasonic, duban abubuwan maganadisu akan ingancin saman ƙarfe na cak na ciki da na waje.

(3) Binciken kayan aikin injiniya da fasaha

Domin tabbatar da inji Properties na m karfe bututu don saduwa da daidaitattun bukatun, bukatar inji dukiya gwajin na sumul karfe bututu samfurin.

Gwajin kaddarorin injina sun haɗa da ƙarfin ƙarfi, ƙarfin amfanin ƙasa, elongation, tasiri, da sauransu. Gwajin gwaji don gwajin aiki ya haɗa da, gwajin flaring, gwajin hydrostatic, gwajin crimping, gwajin lankwasawa, gwajin perforation.Waɗannan abubuwan gwadawa bisa ma'auni daban-daban bambance-bambance da amfani da zaɓi mara kyau.

(4) gwaji mara lalacewa

NDT tana nufin shari'ar ba tare da lalata maras kyau ba, kai tsaye duba lahani na ciki da saman su.A halin yanzu, gwajin ɗigon ɗigon maganadisu, ultrasonic, Eddy halin yanzu da binciken barbashi mai kyalli, wanda aka riga aka yi amfani dashi a cikin bututun ƙarfe marasa ƙarfi da aka yi amfani da su a cikin kasuwancin.Hanyar gwaji mara lalacewa ta haɓaka sosai a cikin 'yan shekarun nan, kwanan nan ya bayyana hologram, nazarin mitar bakan ultrasonic na gwajin hayaki, gwajin hoto na ultrasonic, kazalika da gwajin zafin jiki na ultrasonic da sauran sabbin fasahohi.