Babban diamita madaidaiciya karfe bututu yau da kullun nufin madaidaiciya karfe bututu da waje diamita sama da 500mm, a halin yanzu biyu walda seam mafi girma diamita iya kai 2020mm, guda walda seam mafi girma diamita iya kai 1220mm. Babban diamita madaidaiciya karfe bututu a cikin gida yau da kullun amfani da GB / T3091-2008, GB / T9711.1-1997, API 5L misalai. Babban calibre daidai-daidai karfe bututu yafi da biyu gefe binne arc walda samar da tsari, kayayyakin ta hanyar bending, suture, ciki walda, waje walda, daidaitawa, flat kai da sauran da yawa ayyuka, cimma dacewa ka'idodin bukatun.

Babban calibre kai tsaye karfe bututun da aka saba amfani da kayan akwai Q235A、Q235B、16Mn、20#、Q345、L245、L290、X42、X46、X70、X80、0Cr13、1Cr17、00Cr19Ni11、1Cr18Ni9、0Cr18Ni11Nb.

Babban calibre daidai-daidai karfe bututu yafi da biyu gefe binne arc walda samar da tsari, kayayyakin ta hanyar bending, suture, ciki walda, waje walda, daidaitawa, flat kai da sauran da yawa ayyuka, cimma dacewa ka'idodin bukatun.

Babban calibre daidai seam karfe bututu ne mafi kyawun zaɓi na manyan bututun injiniya, ruwa fitarwa gas injiniya, birni bututun cibiyar sadarwa gini, kasar yammacin gas gabas fitarwa amfani da wannan nau'in karfe bututun zuwa 200,000 ton, kasuwar m.

Babban calibre kai tsaye karfe bututun ingancin dubawa

Dangane da ƙa'idodin GB / T3091-2008 "Low matsin lamba ruwa jigilar walda karfe bututu", da ciki da waje surface na karfe bututu ya kamata smooth, ba ya yarda da ninka, fashewa, layering, walda, karya arc, ƙonewa da sauran zurfin da ya wuce bango kauri karkashin karkatarwa da yarda da sauran na gida lahani da zurfin da ya wuce bango kauri karkashin karkatarwa.

Karfe bututun ya kamata yin inji halaye gwaji, tsawo gwaji, lankwasa gwaji, flattening gwaji, jagoranci lankwasa gwaji da kuma na'ura mai aiki da ruwa gwaji, da kuma cimma da ka'idodin da aka tsara da bukatun. Karfe bututun ya kamata ya iya jure wani ciki matsin lamba, mafi girma gwaji matsin lamba ne 5.05Mpa, kiyaye lokaci ba kasa da 5S, karfe bututun ba ya bayyana leakage bayyanar a lokacin gwaji. The juriya walda karfe bututu damar da ultrasonic ganowa gwaji ko vortex ganowa gwaji maimakon na'ura mai aiki da ruwa gwaji. An binne arc walda karfe bututu damar da wani ultrasonic rauni dubawa ko ray rauni dubawa maimakon na'ura mai aiki da ruwa gwaji.