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ASTM A234 WPB 管帽是一种配件，可简化系统中压力容器或管道末端的密封。它们也被称为管端，因为管帽用于管道的最末端。管帽通常为半球形或椭圆形的封头结构，其一端封闭，另一端与管道连接。管帽的外径与所连接管道的外径相匹配。
管帽最主要的功能是封闭管道的端部。在管道系统中，无论是输送液体还是气体的管道，管帽都可以防止介质泄漏，同时也能防止外界杂质进入管道内部。在一些特殊的管道布局中，管帽可以与其他管件配合改变流体的流向。对焊管帽广泛应用于石油化工、核电、机械、造船、防水处理、管道等多个领域。
ASTM A234 WPB 管帽的规格
Specification: | ASTM A234 WPB End Cap |
Size: | 1/2” – 48” / DN15 – 1200 |
Type: | Butt Weld (BW), Seamless (SMLS) Welded |
Thickness: | SCH10 SCH20 STD SCH40 SCH60 SCH80 SCHXS SCH100 SCH120 SCH140 SCH160 SCHXXS |
Standard | ASME B16.9 |
Type Of Dimension: | BS1640, EN 10253 - 4, DIN 2605, JIS B2312, ANSI B16.9, MSS SP-75, ANSI B16.28, MSS-SP-43 Type A, MSS-SP-43 Type B, JIS B2313 |
Carbon Steel | A234WPB/WPC |
ASME B16.9 管帽的尺寸
DN | NPS | OD | E | E1 |
15 | 1/2 | 21.3 | 25 | 25 |
20 | 3/4 | 26.7 | 25 | 25 |
25 | 1 | 33.4 | 38 | 38 |
32 | 11/4 | 42.2 | 38 | 38 |
40 | 11/2 | 48.3 | 38 | 38 |
50 | 2 | 60.3 | 38 | 44 |
65 | 21/2 | 73.0 | 38 | 51 |
80 | 3 | 88.9 | 51 | 64 |
90 | 31/2 | 101.6 | 64 | 76 |
100 | 4 | 114.3 | 64 | 76 |
125 | 5 | 141.3 | 76 | 89 |
150 | 6 | 168.3 | 89 | 102 |
200 | 8 | 219.1 | 102 | 127 |
250 | 10 | 273.0 | 127 | 152 |
300 | 12 | 323.8 | 152 | 178 |
350 | 14 | 355.6 | 165 | 191 |
400 | 16 | 406.4 | 178 | 203 |
450 | 18 | 457.0 | 203 | 229 |
500 | 20 | 508.0 | 229 | 254 |
550 | 22 | 559.0 | 254 | 254 |
600 | 24 | 610.0 | 267 | 305 |
650 | 26 | 660.0 | 267 | --- |
700 | 28 | 711.0 | 267 | --- |
750 | 30 | 762.0 | 267 | --- |
800 | 32 | 813.0 | 267 | --- |
850 | 34 | 864.0 | 267 | --- |
900 | 36 | 914.0 | 267 | --- |
950 | 38 | 965.0 | 305 | --- |
1000 | 40 | 1016.0 | 305 | --- |
1050 | 42 | 1067.0 | 305 | --- |
1100 | 44 | 1118.0 | 343 | --- |
1150 | 46 | 1168.0 | 343 | --- |
1200 | 48 | 1219.0 | 343 | --- |
碳钢对焊管件的公差范围
对焊管件的公差 | |||||||||||||
公称尺寸Nominal Size | 所有管件1)2) |
| 3D 弯头 | 180 " 弯头 | 管帽 | 异径管 、 | 翻边短节 | ||||||
DN | NPS | OD 3) 4) | ID 3) |
|
| O | K | U | E, E1 |
| G | R | t |
15-65 | 1/2 -21/2 | +1.6 | ±0.8 | ±2 |
±3 |
±6 | ±6 | ±1 | ±3 | ±2 | 0 | 0 | +1.6 |
80-90 | 3-31/2 | ±1.6 | ±1.6 | ±2 | ± 3 | ± 6 | ±6 | ±1 | ±3 | ±2 | 0 | 0 | +1.6 |
100 | 4 | ±1.6 | ±1.6 | ±2 |
±3 |
±6 | ±6 | ±1 | ±3 | ±2 | 0 | 0 | +1.6 |
125-200 | 5-8 | +2.4 | ±1.6 | ±2 |
±3 |
±6 | ±6 | ±1 | ±6 | ±2 | 0 | 0 | +1.6 |
250-450 | 10-18 | +4.0 | ±3.2 | ±2 |
±3 | ±10 | ±6 | ±2 | ±6 | ±2 | 0 | 0 | +3.2 |
500-600 | 20-24 | +6.4 | ±4.8 | ±2 |
±3 | ±10 | ±6 | ±2 | ±6 | ±2 | 0 | 0 | +3.2 |
650-750 | 26-30 | +6.4 | ±4.8 | ±3 |
±6 | --- | --- | --- | ±10 | ±5 | --- | --- | --- |
800-1200 | 32-48 | +6.4 | ± 4.8 | ±5 |
±6 | --- | --- | --- | ±10 | ±5 | --- | --- | --- |
1300-1500 | 52-60 | +6.4 | ±4.8 | ± 5 | --- | --- | --- | --- | --- | --- | --- | --- | --- |
1600-1700 | 64-68 | +6.4 | ± 4.8 | ±5 | --- | --- | --- | --- | --- | --- | --- | --- | --- |
1800-2000 | 72-80 | +6.4 | ±4.8 | ±5 | --- | --- | --- | --- | --- | --- | --- | --- | --- |
对焊管帽的材质等级
碳钢管帽
ASTM A234 WPB/WPC, ASTM A420 WPL6, ASTM A860 WPHY 42 / 46 / 56 / 60 / 65
合金钢管帽
ASTM A234 WP11 / WP12 / WP5 / WP9 / WP22 / WP91 / WP92,
不锈钢管帽
ASTM A403 WP304/304L/304H, 316/316L, 310S, 317, 347, 904L, A815 S32205, S31803, 32750, 32760
A234 WPB 管帽的材质特点
A234 WPB 管帽的化学成分
CHEMICAL | LIMITS | C | Mn | P | S | Si | Cr | Mo | Ni | Cu | Cb | V |
ASTM A234 WPB | MIN | 0.29 | 0.10 | |||||||||
MAX | 0.30 | 1.06 | 0.050 | 0.058 | 0.40 | 0.15 | 0.40 | 0.40 | / | 0.08 |
A234 WPB 管帽中锰含量在0.29% - 1.06%左右。锰在A234 WPB 材质中具有多种作用。首先，它可以提高钢材的强度，与碳元素协同作用，增强钢材的承载能力。其次，锰能够增加钢材的韧性，使材料在承受外力时不容易发生脆性断裂。
A234 WPB 管帽的机械性能
MATERIAL | T.S (MPA) | Y.S (MPA) | EL % | R/A % | HARDNESS |
ASTM A234 WPB | 415 min | 240 min | 22 min | 30 min | 197 max |
A234 WPB 材质具有一定的强度，其屈服强度通常在240MPa左右，抗拉强度在415MPa以上。由于其良好的强度和韧性的结合，A234 WPB 管帽在管道系统中是可靠的部件。在长期使用过程中，它能够抵抗管道内介质的压力波动、温度变化等因素的影响，减少因管帽损坏而导致的管道故障风险。
