pressure vessel steel plate q370r-k8凯发官网
pressure vessel steel plate q370r
1 main use
q370r pressure vessel steel plate is mainly used in spherical storage tanks, hydropower station pressure steel pipes, etc. the steel requires all normalized treatments of all specifications, and its strength and toughness are better than q345r, and the welding performance is excellent.
2 grades and standards
product grade: q370r
executive standard: gb713-2008
3 technical conditions of supply
3.1 product specifications
10～80×1500～4000×l;
3.2 chemical composition
table 1 chemical composition, % product details
牌号 | c≤ | si | mn | p≤ | s≤ | nb |
q370r | 0.18 | ≤0.55 | 1.20～1.60 | 0.025 | 0.015 | 0.015～0.050 |
3.3 mechanical properties
table 2 mechanical properties
牌号 | 规格,mm | rm,mpa | rel,mpa | a,% | akv,，横向，j | 冷弯，b=2a, 180° |
不小于 | ||||||
q370r | 10～16 | 530～630 | 370 | 20 | 34 | d=2a |
＞16～36 | 360 | d=3a | ||||
＞36～60 | 520～620 | 340 | ||||