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Як вибрати розмір труби nps і розмір машини для труб erw
Гру . 17, 2024 10:34
Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. "Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside diameter). Specific pipe is identified by pipe diameter and another non-dimensional number for wall thickness referred to as the Schedule (Sched. or Sch., for example – "2-inch diameter pipe, Schedule 40"). NPS is often incorrectly called National Pipe Size, due to confusion with the American standard for pipe threads, "national pipe straight", which also abbreviates as "NPS". The European and international designation equivalent to NPS is DN (diamètre nominal/nominal diameter/Nennweite), in which sizes are measured in millimetres, see ISO 6708. The term NB (nominal bore) is also frequently used interchangeably with DN.
застосування
На основі NPS і графіка труби [5] зовнішній діаметр труби (OD) і товщину стінки можна отримати з довідкових таблиць, таких як наведені нижче, які базуються на стандартах ASME B36.10M і B36.19M. Наприклад, NPS 14 Sch 40 має зовнішній діаметр 14 дюймів (360 мм) і товщину стінки 0,437 дюйма (11,1 мм). Однак значення NPS і OD не завжди однакові, що може викликати плутанину.
розмір машини для трубки erw для вибору та довідки
|
Модель |
OD трубка |
Товщина |
Квадрат/Прямокутник |
Товщина |
швидкість |
|
АІС-12 |
φ4~φ12 |
0.2~0.5 |
// |
// |
30~120 |
|
АІС-16 |
φ6~φ16 |
0.2~0.8 |
// |
// |
30~120 |
|
АІС-20 |
φ7~φ20 |
0.2~1.0 |
// |
// |
30~120 |
|
АІС-25 |
φ9~φ25.4 |
0.25~1.2 |
// |
// |
30~120 |
|
АІС-32 |
φ10~φ32 |
0.25~1.5 |
8*8~25.4*25.4 |
0.25~1.2 |
30~120 |
|
АІС-32з |
0.5~2.0 |
0.5~1.5 |
30~100 |
||
|
АІС-40 |
φ12.7~φ40 |
0.3~1.8 |
10*10~31.8*31.8 |
0.3~1.5 |
30~110 |
|
АІС-40з |
0.6~2.0 |
0.6~1.5 |
30~100 |
||
|
АІС-50к |
φ16~φ50.8 |
0.4~1.5 |
12.7*12.7~40*40 |
0.4~1.2 |
30~110 |
|
АІС-50 |
0.5~2.0 |
0.5~1.5 |
30~90 |
||
|
АІС-50з |
0.7~2.5 |
0.7~2.0 |
30~80 |
||
|
АІС-63к |
φ19.05~φ63.5 |
0.6~2.0 |
15*15~50*50 |
0.6~1.5 |
30~90 |
|
АІС-63 |
0.7~3.0 |
0.7~2.5 |
30~80 |
||
|
АІС-63з |
0.8~3.5 |
0.8~3.0 |
20~70 |
||
|
АІС-76к |
φ25.4~φ76.2 |
0.8~2.5 |
20*20~60*60 |
0.8~2.0 |
30~90 |
|
АІС-76 |
0.8~3.5 |
0.8~3.0 |
30~80 |
||
|
АІС-76з |
0.8~4.0 |
0.8~3.5 |
20~70 |
||
|
АІС-90к |
φ30~φ90 |
0.8~3.0 |
25*25~70*70 |
0.8~2.5 |
30~90 |
|
АІС-90 |
0.8~3.5 |
0.8~3.0 |
30~80 |
||
|
АІС-90з |
1.0~4.0 |
1.0~3.5 |
20~70 |
|
АІС-100к |
φ31.8~φ101.6 |
1.0~3.0 |
25*25~80*80 |
1.0~2.5 |
30~90 |
|
АІС-100 |
1.0~3.75 |
1.0~3.25 |
30~80 |
||
|
АІС-100з |
1.0~4.25 |
1.0~3.5 |
20~70 |
||
|
АІС-114к |
φ35~φ114.3 |
1.0~3.0 |
30*30~90*90 |
1.0~2.5 |
20~80 |
|
АІС-114 |
1.2~4.5 |
1.2~4.0 |
20~70 |
||
|
АІС-114з |
φ40~φ114.3 |
1.2~5.0 |
1.2~4.5 |
15~60 |
|
|
АІС-127к |
φ40~φ127 |
1.2~3.5 |
40*40~100*100 |
1.2~3.0 |
20~70 |
|
АІС-127 |
1.5~5.0 |
1.5~4.5 |
15~60 |
||
|
АІС-127з |
φ50~φ127 |
1.5~5.5 |
1.5~5.0 |
10~45 |
|
|
АІС-140к |
φ50~φ141.3 |
1.2~4.0 |
50*50~110*100 |
1.2~3.5 |
15~60 |
|
АІС-140 |
1.5~5.5 |
1.5~5.0 |
10~50 |
||
|
АІС-140з |
φ60~φ141.3 |
2.0~6.0 |
2.0~5.5 |
10~40 |
|
|
АІС-168к |
φ60~φ168.3 |
1.5~5.0 |
60*60~130*130 |
1.5~4.5 |
10~50 |
|
АІС-168 |
2.0~6.0 |
2.0~5.5 |
10~50 |
||
|
АІС-168з |
φ76.2~φ168.3 |
2.5~8.0 |
2.5~7.0 |
10~40 |
|
|
АІС-219к |
φ89.1~φ219.1 |
2.0~6.0 |
70*70~160*160 |
2.0~5.5 |
10~50 |
|
АІС-219 |
3.0~8.0 |
3.0~7.0 |
10~40 |
||
|
АІС-219з |
4.0~10.0 |
4.0~9.0 |
10~40 |
||
|
АІС-273 |
φ114.3~φ273 |
4.0~10.0 |
90*90~200*200 |
4.0~9.0 |
10~40 |
|
АІС-273з |
4.5~12.0 |
120*60~260*130 |
4.5~11.0 |
10~35 |
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