Hordhac kooban oo ku saabsan Tuubooyinka Birta ee Labajibbaaran iyo kuwa Laydiga ah ee ASTM A500:
ASTM A500 waa qeexitaan caadi ah oo loogu talagalay tuubooyinka qaab-dhismeedka birta kaarboon ee qabow ee la alxamay iyo kuwa aan kala go 'lahayn ee qaababka labajibbaaran, iyo qaababka afarjibbaaran. Qeexitaankani wuxuu daboolayaa darajooyin kala duwan oo tuubooyinka birta kaarboon ah loogu talagalay codsiyada qaab-dhismeedka, oo ay ku jiraan qaababka labajibbaaran iyo kuwa afarjibbaaran.
| Badeecada | Tuubada Birta ee laba jibbaaran iyo qaabaysan |
| Alaab | Bir Kaarboon ah |
| Fasal | Q195 = A53 Heerka A Q235 = A500 Darajada A Q355 = A500 Fasalka B Fasalka C |
| Heerka Caadiga ah | GB/T 6728 ASTM A53, A500, A36 |
| Dusha sare | Madow/Dabiici ah La rinjiyeeyay Saliid leh oo lagu duubay ama aan lahayn duub |
| Dhammaadyada | Cidhifyo cad |
| Faahfaahinta | OD: 20*20-500*500mm; 20*40-300*500mm Dhumucda: 1.0-30.0mm Dhererka: 2-12m |
Codsiga Tube Steel Square iyo leydi:
Dhismaha / qalabka dhismaha tuubo bir ah
Tuubada qaab-dhismeedka
tuubbo bir ah oo qaab-dhismeedka raadraaca qoraxda

Tijaabada Tayada Tuubooyinka Birta ee Labajibbaaran iyo kuwa Laydiga ah ee ASTM A500:
| Halabuurka Kiimikada ASTM A500 | |||||
| heerka birta | C (ugu badnaan)% | Mn (ugu badnaan)% | P (ugu badnaan)% | S (ugu badnaan)% | Naxaas (ugu yaraan)% |
| Darajada A | 0.3 | 1.4 | 0.045 | 0.045 | 0.18 |
| Fasalka B | 0.3 | 1.4 | 0.045 | 0.045 | 0.18 |
| Fasalka C | 0.27 | 1.4 | 0.045 | 0.045 | 0.18 |
| Dhimis kasta oo ah 0.01 boqolkiiba dhibic ka hooseysa heerka ugu sarreeya ee kaarboonka ee la cayimay, waxaa loo oggol yahay koror dhan 0.06 boqolkiiba dhibic ka sarreeya heerka ugu sarreeya ee loo cayimay manganese, ilaa ugu badnaan 1.50% falanqaynta kulaylka iyo 1.60% falanqaynta badeecadaha. | |||||
| Sifooyinka Farsamada ee Tuubada Qaabaysan | |||||
| heerka birta | Xoogga wax soo saarka ugu yaraan MPa | Xoogga jiidista ugu yaraan MPa | Kordhinta ugu yaraan. % | ||
| Darajada A | 270 | 310 | 25 Dhumucyada derbiga (T) oo la mid ah ama ka weyn 3.05mm | ||
| Fasalka B | 315 | 400 | 23 Dhumucyada derbiga (T) oo la mid ah ama ka weyn 4.57mm | ||
| Fasalka C | 345 | 425 | 21 Dhumucyada derbiga (T) oo la mid ah ama ka weyn 3.05mm | ||
Xakamaynta Tayada Adag:
1) Inta lagu jiro iyo ka dib wax soo saarka, 4 shaqaale QC ah oo khibrad u leh in ka badan 5 sano ayaa si aan kala sooc lahayn u baara alaabada.
2) Shaybaar qaran oo la aqoonsan yahay oo leh shahaadooyinka CNAS
3) Kormeer la aqbali karo oo ka yimaada dhinac saddexaad oo uu magacaabay/lacag ka bixiyay iibsadaha, sida SGS, BV.
4) Waxaa ansixiyay Malaysia, Indonesia, Singapore, Filibiin, Australia, Peru iyo UK. Waxaan leenahay shahaadooyinka UL /FM, ISO9001/18001, FPC.



Nagu saabsan:
Shirkadda Tianjin Youfa Steel Pipe Group Co., Ltd waxaa la aasaasay Luulyo 1, 2000. Waxaa jira ilaa 8000 oo shaqaale ah, 9 warshadood, 179 khadad wax soo saar oo tuubooyin bir ah, 3 shaybaar oo qaran oo la aqoonsan yahay, iyo 1 xarun tignoolajiyada ganacsiga oo ay dowladdu aqoonsan tahay oo Tianjin.
31 khadad wax soo saar tuubooyin bir ah oo laba jibbaaran iyo qaabaysan
Warshadaha:
Tianjin Youfa Dezhong Steel Pipe Co., Ltd;
Handan Youfa Steel Pipe Co., Ltd;
Shanxi Youfa Steel Pipe Co., Ltd








