NPSパイプサイズとERWチューブマシンサイズの選び方
2024年12月17日 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.
応用
パイプのNPSとスケジュール[5]に基づいて、パイプの外径（OD）と壁の厚さは、ASME規格B36.10MとB36.19Mに基づく以下の参照表から取得できます。たとえば、NPS 14 Sch 40のODは14インチ（360 mm）、壁の厚さは0.437インチ（11.1 mm）です。ただし、NPSとODの値は必ずしも等しいとは限らず、混乱を招く可能性があります。
選択と参照のためのERWチューブマシンのサイズ
|
モデル |
チューブ外径 |
厚さ |
正方形/長方形 |
厚さ |
スピード |
|
AIS-12 |
φ4~φ12 |
0.2~0.5 |
// |
// |
30~120 |
|
AIS-16 |
φ6~φ16 |
0.2~0.8 |
// |
// |
30~120 |
|
AIS-20 |
φ7~φ20 |
0.2~1.0 |
// |
// |
30~120 |
|
AIS-25 |
φ9~φ25.4 |
0.25~1.2 |
// |
// |
30~120 |
|
AIS-32 |
φ10~φ32 |
0.25~1.5 |
8*8~25.4*25.4 |
0.25~1.2 |
30~120 |
|
AIS-32z |
0.5~2.0 |
0.5~1.5 |
30~100 |
||
|
AIS-40 |
φ12.7~φ40 |
0.3~1.8 |
10*10~31.8*31.8 |
0.3~1.5 |
30~110 |
|
AIS-40z |
0.6~2.0 |
0.6~1.5 |
30~100 |
||
|
AIS-50q |
φ16~φ50.8 |
0.4~1.5 |
12.7*12.7~40*40 |
0.4~1.2 |
30~110 |
|
AIS-50 |
0.5~2.0 |
0.5~1.5 |
30~90 |
||
|
AIS-50z |
0.7~2.5 |
0.7~2.0 |
30~80 |
||
|
AIS-63q |
φ19.05~φ63.5 |
0.6~2.0 |
15*15~50*50 |
0.6~1.5 |
30~90 |
|
AIS-63 |
0.7~3.0 |
0.7~2.5 |
30~80 |
||
|
AIS-63z |
0.8~3.5 |
0.8~3.0 |
20~70 |
||
|
AIS-76q |
φ25.4~φ76.2 |
0.8~2.5 |
20*20~60*60 |
0.8~2.0 |
30~90 |
|
AIS-76 |
0.8~3.5 |
0.8~3.0 |
30~80 |
||
|
AIS-76z |
0.8~4.0 |
0.8~3.5 |
20~70 |
||
|
AIS-90q |
φ30~φ90 |
0.8~3.0 |
25*25~70*70 |
0.8~2.5 |
30~90 |
|
AIS-90 |
0.8~3.5 |
0.8~3.0 |
30~80 |
||
|
AIS-90z |
1.0~4.0 |
1.0~3.5 |
20~70 |
|
AIS-100q |
φ31.8~φ101.6 |
1.0~3.0 |
25*25~80*80 |
1.0~2.5 |
30~90 |
|
AIS-100 |
1.0~3.75 |
1.0~3.25 |
30~80 |
||
|
AIS-100z |
1.0~4.25 |
1.0~3.5 |
20~70 |
||
|
AIS-114q |
φ35~φ114.3 |
1.0~3.0 |
30*30~90*90 |
1.0~2.5 |
20~80 |
|
AIS-114 |
1.2~4.5 |
1.2~4.0 |
20~70 |
||
|
AIS-114z |
φ40~φ114.3 |
1.2~5.0 |
1.2~4.5 |
15~60 |
|
|
AIS-127q |
φ40~φ127 |
1.2~3.5 |
40*40~100*100 |
1.2~3.0 |
20~70 |
|
AIS-127 |
1.5~5.0 |
1.5~4.5 |
15~60 |
||
|
AIS-127z |
φ50~φ127 |
1.5~5.5 |
1.5~5.0 |
10~45 |
|
|
AIS-140q |
φ50~φ141.3 |
1.2~4.0 |
50*50~110*100 |
1.2~3.5 |
15~60 |
|
AIS-140 |
1.5~5.5 |
1.5~5.0 |
10~50 |
||
|
AIS-140z |
φ60~φ141.3 |
2.0~6.0 |
2.0~5.5 |
10~40 |
|
|
AIS-168q |
φ60~φ168.3 |
1.5~5.0 |
60*60~130*130 |
1.5~4.5 |
10~50 |
|
AIS-168 |
2.0~6.0 |
2.0~5.5 |
10~50 |
||
|
AIS-168z |
φ76.2~φ168.3 |
2.5~8.0 |
2.5~7.0 |
10~40 |
|
|
AIS-219q |
φ89.1~φ219.1 |
2.0~6.0 |
70*70~160*160 |
2.0~5.5 |
10~50 |
|
AIS-219 |
3.0~8.0 |
3.0~7.0 |
10~40 |
||
|
AIS-219z |
4.0~10.0 |
4.0~9.0 |
10~40 |
||
|
AIS-273 |
φ114.3~φ273 |
4.0~10.0 |
90*90~200*200 |
4.0~9.0 |
10~40 |
|
AIS-273z |
4.5~12.0 |
120*60~260*130 |
4.5~11.0 |
10~35 |
詳細については、メールでお問い合わせください。
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