1. Kimyoviy tarkibini taqqoslash
| Element | ASTM A106 (Gr.B) | ASTM A252 (Gr.3) |
|---|---|---|
| Uglerod (C) | 0.17-0.24% | 0,26% dan kam yoki unga teng |
| Kremniy (Si) | 0.17-0.37% | 0,20% dan kam yoki unga teng |
| Marganets (Mn) | 0.35-0.65% | 1,20% dan kam yoki unga teng |
| Fosfor (P) | 0,030% dan kam yoki unga teng | 0,05% dan kam yoki unga teng |
| Oltingugurt (S) | 0,030% dan kam yoki unga teng | 0,05% dan kam yoki unga teng |
2. Mexanik xususiyatlarni taqqoslash
| Parametr | ASTM A106 (Gr.B) | ASTM A252 (Gr.3) |
|---|---|---|
| Hosildorlik kuchi | 240 MPa dan katta yoki unga teng | 241 MPa dan katta yoki unga teng |
| Mustahkamlik chegarasi | 415 MPa dan katta yoki unga teng | 455 MPa dan katta yoki unga teng |
| Cho'zilish | 24% dan katta yoki teng | 20% dan katta yoki teng |
3. Mexanik xususiyatlarni taqqoslash
| Xarakterli | ASTM A106 | ASTM A252 |
|---|---|---|
| Harorat diapazoni | -30 daraja ~+80 daraja | -20 daraja ~+50 daraja |
| Tekshirish standarti | 100% gidrostatik sinov | 100% payvand tekshiruvi |
| To'g'rilik talabi | Belgilanmagan | Uzunlikning 0,25% dan kam yoki unga teng |
4. Ilovadagi farqlar
ASTM A106: Suyuqlik uzatish quvurlari, yuqori{0}}harorat/bosim tizimlari, neft-kimyo uskunalari
ASTM A252: Qoziq poydevori muhandisligi, qazishni qo'llab-quvvatlash, port / iskala inshootlari
A252 GR3 quvur qoziq zavodi
