Tuubbo Bir Kaarboon ah

Tuubada birta kaarboonku waa walax waarta oo laga sameeyay birta kaarboonka.
Heerka Tuubooyinka Birta ah ee CHS: ASTM A53, API 5L, ASTM A252, ASTM A795, ISO65, DIN2440, BS1387. BS1139, EN10255, EN39, JIS3444, GB/T 3091 & GB/T13793
Heerka Tuubooyinka Birta ee RHS SHS: ASTM A500, EN10219, EN10210, JIS3466, GB/T 6728
Codsiga: Qalabka Dhismaha / Dhismaha tuubo bir ah, Qaab-dhismeedka birta, tuubo bir ah oo deyrka leh,
Tuubada isku-dhafka ah, Tuubada birta ah ee ilaalinta dabka, Tuubada birta aqalka dhirta lagu koriyo, dareere cadaadis hooseeya, biyo, gaas, saliid, tuubo xariiq ah, Tuubada waraabka, Tuubada gacanta lagu qabto