How to choose nps pipe size and erw tube machine size

Dec . 17, 2024 10:34

how to choose nps pipe size and erw tube machine size

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.

how to choose nps pipe size and erw tube machine size

Application

Based on the NPS and schedule of a pipe,[5] the pipe outside diameter (OD) and wall thickness can be obtained from reference tables such as those below, which are based on ASME standards B36.10M and B36.19M. For example, NPS 14 Sch 40 has an OD of 14 inches (360 mm) and a wall thickness of 0.437 inches (11.1 mm). However, the NPS and OD values are not always equal, which can create confusion.

how to choose nps pipe size and erw tube machine size

erw tube machine size for choose and reference

Model	Tube O.D (mm)	Thickness (mm)	Square/Rectangle (mm)	Thickness (mm)	Speed (m/min)
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	88~25.425.4 106~31.819.1	0.25~1.2	30~120
AIS-32z	φ10~φ32	0.5~2.0	88~25.425.4 106~31.819.1	0.5~1.5	30~100
AIS-40	φ12.7~φ40	0.3~1.8	1010~31.831.8 2010~4020	0.3~1.5	30~110
AIS-40z	φ12.7~φ40	0.6~2.0	1010~31.831.8 2010~4020	0.6~1.5	30~100
AIS-50q	φ16~φ50.8	0.4~1.5	12.712.7~4040 2010~5025	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	1515~5050 2010~6030	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	2020~6060 3015~8040	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	2525~7070 3020~8040	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	2525~8080 3020~10050	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	3030~9090 4020~12060	1.0~2.5	20~80
AIS-114	φ35~φ114.3	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	4040~100100 6030~12080	1.2~3.0	20~70
AIS-127	φ40~φ127	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	5050~110100 6040~15075	1.2~3.5	15~60
AIS-140	φ50~φ141.3	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	6060~130130 8040~16080	1.5~4.5	10~50
AIS-168	φ60~φ168.3	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	7070~160160 10050~200100	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	9090~200200	4.0~9.0	10~40
AIS-273z	φ114.3~φ273	4.5~12.0	12060~260130	4.5~11.0	10~35

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