ASTM A335 P91 waa qeexitaan caadi ah oo loogu talagalay tuubooyinka birta ee aan kala go 'lahayn oo loogu talagalay adeegga heerkulka sare.
ASTM A3355 Alloy alloy birta birta waa la soo saaray si waafaqsan heerka A335 ee uu aasaasay bulshada Ameerika si loo baaro iyo alaabada (ASTM).
Fult \ / Weld Fled Flage Flaged Flangeted ama Hub-Hub Flages, waa nooc ka mid ah Flanges-ka oo uruurin kara walaaca tuubooyinka, iyadoo la hubinayo in hoos udhac ku sii kordhaya dusha sare ee dusheeda.
Nooca, Difaaca, iyo farqiga udhaca tuubbada birta
Birta la jajabiyey ee birta ah oo la jeexjeexan ayaa badanaa la doortaa sababtoo ah howlaheeda ugu weyn ee daadashada iyo anti-ka-damacyada ah ee loo yaqaan 'ENEX' Stelexs Star.Sesains Frores-ka hadhuudhku had iyo jeer waxay noqdaan cabbirro yaryar oo had iyo jeer ay had iyo jeer dhagxaan.
