| Alaabta | Dhuumaha Dab-damiska Birta |
| Qalab | Birta Kaarboonka |
| Darajo | Q195 = S195 / A53 Fasalka A Q235 = S235 / A53 Fasalka B / A500 Fasalka A / STK400 / SS400 / ST42.2 Q345 = S355JR / A500 Fasalka B Darajada C |
| Heerka | GB/T3091, GB/T13793 API 5L, ASTM A53, A500, A36, ASTM A795 |
| Tilmaamaha | ASTM A795 sch10 sch30 sch40 |
| Dusha sare | Madow ama Casaan lagu mariyey |
| Dhammaad | Bannaan dhammaad |
| Dhamaadka jeexan |
Heerarka iyo Shuruudaha
Qalabka iyo Dhismaha: Tuubooyinka UL-shahaadadu waxay ka samaysan yihiin bir tayo sare leh oo la kulma walxaha gaarka ah iyo sifooyinka farsamada.
Qiimaynta Cadaadiska: Tuubooyinkani waa in ay u adkeystaan cadaadiska sare ee caadiga ah ee nidaamka rusheeyaha dabka.
Iska caabinta Daxalka: Heerarka UL waxaa ku jira tijaabooyinka caabbinta daxalka si loo hubiyo in tubooyinka ay u adkeysan karaan bay'ada adag.
Tijaabooyinka Qulqulka iyo Awooda: Tubooyinka waxa lagu sameeyaa baadhitaan adag oo ah daadinta, xoogga dilaaca, iyo daacadnimada qaabdhismeedka.
Aqoonsiga
UL Mark: Ka raadi calaamadda UL ee tuubada, taas oo muujinaysa u hoggaansanaanta heerarka UL.
Macluumaadka Summada: Calaamadda sida caadiga ah waxaa ku jira magaca soo saaraha, cabbirka tuubada, qiimeynta cadaadiska, iyo faahfaahinta kale ee muhiimka ah.
nagu saabsan:
Tianjin Youfa Steel Pipe Group Co., Ltd waxaa la aasaasay on July 1st, 2000. Waxaa jira gebi ahaanba ku saabsan 8000 shaqaalaha, 9 warshadaha, 179 khadadka wax soo saarka biraha birta, 3 shaybaar qaranka la aqoonsan yahay, iyo 1 Tianjin dawladda aqoonsan xarunta technology ganacsiga.
62 ERW khadadka wax soo saarka birta
Warshadaha:
Tianjin Youfa Steel Pipe Group Co., Ltd .-Lambarka 1;
Tianjin Youfa Steel Pipe Group Co., Ltd .-Lambarka 2;
Tangshan Zhengyuan Steel Pipe Co., Ltd;
Tangshan Youfa Steel Pipe Manufacture Co., Ltd;
Handan Youfa Steel Pipe Co., Ltd;
Hal qayb oo ka mid ah Shanxi Youfa Steel Pipe Co., Ltd
