umgangatho wombhobho we-ERWzezi zilandelayo:
API 5L, ASTM A53 B, ASTM A178, ASTM A500/501, ASTM A691, ASTM A252, ASTM A672

I-API 5L Standard ijolise kwigesi kunye namanzi kwishishini le-oyile negesi yereferensi, esetyenziselwa umbhobho wentsimbi engenamthungo kunye nombhobho wentsimbi odityanisiweyo, kubandakanywa izibuko eziqhelekileyo kunye nezibuko, izibuko zesokethi yombhobho kunye netyhubhu yomsinga othe ngqo (TFL) kunye nechweba linendawo ethile. ukusetyenzwa kwetyhubhu yoqhagamshelo.

Umbhobho we-ASTM A53 wenzelwe ukusetyenziswa koomatshini kunye noxinzelelo kwaye ukwamkelekile kusetyenziso oluqhelekileyo kumphunga, amanzi, igesi kunye nemigca yomoya.

Imigangatho ye-ASTM A178 yombane-ukumelana ne-welded iityhubhu ezinobuncinci-udonga-bungqingqwa eyenziwe ngentsimbi yekhabhoni kunye nentsimbi ye-carbon-manganese eza kusetyenziswa kwiityhubhu zebhoyila, imibhobho yebhoyila, imibhobho yeheater enkulu, kunye neziphelo ezikhuselekileyo.

I-ASTM A500 igquma intsimbi edityanisiweyo epholileyo nengenamthungo yekhabhoni engqukuva, isikwere, uxande, okanye imilo ekhethekileyo yolwakhiwo ityhubhu yolwakhiwo oludityanisiweyo, oludityanisiweyo, okanye olubiyelweyo lweebhulorho nezakhiwo, kunye neenjongo zolwakhiwo jikelele.

I-ASTM A691 igubungela umbhobho we-carbon kunye ne-alloy steel, i-electric-fusion-welded nge-filler metal edityanisiweyo, eyenziwe kwi-plate ye-pressure-bessel-quality plate yohlalutyo oluninzi kunye namanqanaba amandla kwaye ifanelekile kwinkonzo yoxinzelelo oluphezulu kumaqondo okushisa aphezulu.

I-ASTM A252 igubungela iimfumba zemibhobho yentsimbi ye-cylindrical apho i-cylinder yentsimbi isebenza njengelungu elisisigxina eliphethe umthwalo okanye njengeqokobhe ukwenza iimfumba zekhonkrithi ezifakwe kwindawo.

I-ASTM A672 igubungela umbhobho wentsimbi we-electro-fusion-welded wenkonzo yoxinzelelo oluphezulu kumaqondo obushushu aphakathi.