Farashin ERWsune kamar haka:
API 5L, ASTM A53 B, ASTM A178, ASTM A500/501, ASTM A691, ASTM A252, ASTM A672

API 5L Standard yana nufin iskar gas da ruwa a cikin masana'antar mai da iskar gas don tunani, wanda ake amfani dashi don bututun ƙarfe mara nauyi da bututun ƙarfe, gami da tashar jiragen ruwa na gama gari da tashar jiragen ruwa, tashar bututun soket da bututun rafi kai tsaye (TFL) da tashar jiragen ruwa na musamman. haɗin bututu aiki.

An yi nufin bututun ASTM A53 don aikace-aikacen inji da matsa lamba kuma ana yarda da shi don amfanin yau da kullun a cikin tururi, ruwa, gas da layin iska.

Matsayin ASTM A178 don bututu masu juriya da lantarki tare da ƙaramin kauri da aka yi da ƙarfe na carbon da carbon-manganese karfe da za a yi amfani da su a cikin bututun tukunyar jirgi, bututun tukunyar jirgi, flues mai zafi, da ƙarshen amintaccen ƙarewa.

ASTM A500 yana rufe nau'in sanyi mai walƙiya da maras sumul carbon karfe zagaye, murabba'i, rectangular, ko tsari na musamman don welded, riveted, ko bolted ginin gadoji da gine-gine, kuma don dalilai na gabaɗaya.

ASTM A691 yana rufe carbon da bututun ƙarfe, lantarki-fusion-welded tare da ƙara ƙarfe mai filler, ƙirƙira daga farantin ingancin matsi da matakan ƙarfi da yawa kuma ya dace da sabis na matsin lamba a yanayin zafi.

ASTM A252 yana rufe tarin bututun bututun ƙarfe na silindi na bango wanda ƙarfen silinda ke aiki azaman memba mai ɗaukar kaya na dindindin ko azaman harsashi don samar da simintin simintin-wuri.

ASTM A672 yana rufe bututun ƙarfe mai waldaran lantarki-fusion don sabis na matsin lamba a matsakaicin yanayin zafi.