Dengan pelbagai jenis tiub yang terdapat di pasaran, pengkategorian menjadi sukar. Aloi 20 tiub adalah salah satu daripada banyak tiub aloi. Ia terdiri daripada nikel, kromium dan besi. Tiub aloi 20 ERW pada mulanya dibangunkan untuk digunakan dalam persekitaran dengan pendedahan asid sulfurik terutamanya dalam kilang pulpa dan kertas. Kemudian, disebabkan sifat rintangan kakisan tiub Alloy 20, lebar jalurnya telah dikembangkan untuk disesuaikan dengan industri petrokimia, penjanaan kuasa dan kimia.

Tubos de aleación 20

Jadual Dimensi 20 Tiub Aloi

Ketebalan Nominal (dalam) MM	Saiz Paip (dalam)	Kawasan Melintang (Dalam 2) MM2			Diameter (dalam) MM		Kelantangan (kaki3/kaki)	Bilangan Benang setiap inci Skru	Berat badan		Panjang Paip (kaki setiap persegi.0 kaki permukaan)
dalaman	Luaran	Keluli	dalaman	Luaran	(kg/m)	(lbs/ft)	permukaan dalaman (kaki)	Permukaan Luaran (kaki)
0.007	1/8	0.006	0.013	0.007	0.027	0.0405	0.00004	27	0.036	0.024	14.020	9.043
0.009	¼	0.010	0.023	0.013	0.036	0.0540	0.00007	18	0.063	0.042	10.049	7.007
0.009	3/8	0.019	0.036	0.017	0.049	0.0675	0.00013	18	0.084	0.057	7.075	5.066
0.011	½	0.030	0.055	0.025	0.062	0.0840	0.00021	14	1.026	0.085	6.014	4.055
0.011	¾	0.053	0.087	0.033	0.082	1.0050	0.00037	14	1.068	1.013	4.064	3.064
0.013	1	0.086	1.036	0.049	1.005	1.0315	0.00060	11 ½	2.050	1.068	3.064	2.090
0.014	1 ¼	1.050	2.016	0.067	1.038	1.0660	0.00104	11 ½	3.038	2.027	2.077	2.030
0.015	1 ½	2.004	2.084	0.080	1.061	1.0900	0.00141	11 ½	4.004	2.072	2.037	2.001
0.015	2	3.036	4.043	1.008	2.007	2.0375	0.00233	11 ½	5.043	3.065	1.085	1.061
0.020	2 ½	4.079	6.049	1.070	2.047	2.0875	0.00333	8	8.062	5.079	1.055	1.033
0.022	3	7.039	9.062	2.023	3.007	3.0500	0.00513	8	11.027	7.058	1.025	1.009
0.023	3 ½	9.089	12.056	2.068	3.055	4.0000	0.00687	8	13.056	9.011	1.008	0.095
0.024	4	12.073	15.090	3.017	4.003	4.0500	0.00884	8	16.006	10.079	0.095	0.085
0.026	5	20.000	24.030	4.030	5.005	5.0563	0.01389	8	21.074	14.061	0.076	0.069
0.028	6	28.089	34.047	5.058	6.007	6.0625	0.02006	8	28.023	18.097	0.063	0.058
0.032	8	50.002	58.042	8.040	7.098	8.0625	0.03552	8	42.049	28.055	0.048	0.044
0.037	10	78.085	90.076	11.090	10.002	10.0750	0.05476	8	60.024	40.048	0.038	0.036
0.041	12	111.090	127.064	15.074	11.094	12.0750	0.07763	8	79.077	53.060	0.032	0.030
0.044	14	135.030	153.094	18.064	13.013	14.0000	0.09354	8	93.075	63.000	0.028	0.027
0.050	16	176.070	201.005	24.035	15.000	16.0000	1.02230	8	116.008	78.000	0.025	0.024
0.056	18	224.000	254.085	30.085	16.088	18.0000	1.05550	8	156.026	105.000	0.023	0.021
0.059	20	278.000	314.015	36.015	18.081	20.0000	1.09260	8	183.005	123.000	0.020	0.019
0.069	24	402.010	452.040	50.030	22.063	24.0000	2.07930	8	254.048	171.000	0.017	0.016

Aloi 20 Carta Saiz Tiub Kapilari

Dinding Biasa (RW) mm	Tolok	Dinding Lebih Nipis (XTW) mm	Toleransi Diameter Luar mm	Dinding Ultra Nipis (UTW) mm	Dinding Nipis (TW) mm
{{0}}.0064 hingga 0.0089	30		{{0}}.0304 hingga 0.0317
{{0}}.0064 hingga 0.0089	29		atau.0330 hingga 0.0342
{{0}}.0076 hingga 0.0102	28		{{0}}.0355 hingga 0.0368
{{0}}.0089 hingga 0.0115	27		{{0}}.0406 hingga 0.0419		{{0}}.0064 hingga 0.0089
{{0}}.0089 hingga 0.0114	26		{{0}}.0457 hingga 0.0469
{{0}}.0115 hingga 0.0140	25		{{0}}.0508 hingga 0.0520		{{0}}.0089 hingga 0.0114
{{0}}.0114 hingga 0.0140	24		{{0}}.0558 hingga 0.0571	{{0}}.0051 hingga 0.0102	{{0}}.0089 hingga 0.0114
{{0}}.0140 hingga 0.0165	23		{{0}}.0635 hingga 0.0647	{{0}}.0051 hingga 0.0102	{{0}}.0089 hingga 0.0114
{{0}}.0140 hingga 0.0165	22	{{0}}.0077 hingga 0.0102	{{0}}.0711 hingga 0.0723	{{0}}.0051 hingga 0.0102	{{0}}.0096 hingga 0.0121
{{0}}.0140 hingga 0.0165	21		{{0}}.0812 hingga 0.0825	{{0}}.0051 hingga 0.0102	{{0}}.0102 hingga 0.0127
{{0}}.0108 hingga 0.0165	20		{{0}}.0901 hingga 0.0914		{{0}}.0108 hingga 0.0134
{{0}}.0166 hingga 0.0216	19	{{0}}.0070 hingga 0.0108	1.0054 hingga 1.0079		{{0}}.0102 hingga 0.0140
{{0}}.0191 hingga 0.0241	18	{{0}}.0083 hingga 0.0121	1.0257 hingga 1.0282	{{0}}.0051 hingga 0.0102	{{0}}.0127 hingga 0.0165
{{0}}.0177 hingga 0.0229	17	{{0}}.0083 hingga 0.0127	1.0460 hingga 1.0485	{{0}}.0057 hingga 0.0102	{{0}}.0115 hingga 0.0152
{{0}}.0204 hingga 0.0254	16	{{0}}.0096 hingga 0.0133	1.0638 hingga 1.0663	{{0}}.0070 hingga 0.0121	{{0}}.0127 hingga 0.0165
{{0}}.0204 hingga 0.0254	15	{{0}}.0096 hingga 0.0134	1.0816 hingga 1.0841	{{0}}.0070 hingga 0.0121	{{0}}.0127 hingga 0.0165
{{0}}.0216 hingga 0.0292	14	{{0}}.0114 hingga 0.0165	2.0082 hingga 2.0133	{{0}}.0076 hingga 0.0134	{{0}}.0165 hingga 0.0229
{{0}}.0267 hingga 0.0343	13		2.0387 hingga 2.0438		{{0}}.0191 hingga 0.0267
{{0}}.0267 hingga 0.0321	12		2.0743 hingga 2.0749
{{0}}.0293 hingga 0.0368	11		3.0023 hingga 3.0073		{{0}}.0216 hingga 0.0292
{{0}}.0318 hingga 0.0394	10	{{0}}.0216 hingga 0.0292	3.0378 hingga 3.0429

Carta Berat 20 Tiub Aloi

NPS	Ketebalan dinding	Diameter Luar	Berat badan		Berat badan
inci	milimeter	inci	milimeter	kg/mtr	Jadual	lb/ft
1/2″	0.0109	2.0769	0.0840	21	1.0268	40 STDS	0.0851
	0.0147	3.0734			1.0621	80 STDS	1.0088
3/4″	0.0113	2.0870	1.0050	27	1.0684	40 STDS	1.0131
	0.0154	3.0912			2.0195	80 STDS	1.0474
1"	0.0133	3.0378	1.0315	33	2.0501	40 STDS	1.0679
	0.0179	4.0547			3.0325	80 STDS	2.0172
1 1/4″	0.0140	3.0556	1.0660	42	3.0385	40 STDS	2.0273
	0.0191	4.0851			4.0464	80 STDS	2.0997
1 1/2″	0.0145	3.0683	1.0900	48	4.0048	40 STDS	2.0718
	0.0200	5.0080			5.0409	80 STDS	3.0361
dua"	0.0154	3.0912	2.0375	60	5.0441	40 STDS	3.0653
	0.0218	5.0537			7.0480	80 STDS	5.0022
2 1/2″	0.0203	5.0516	2.0875	73	8.0629	40 STDS	5.0793
	0.0276	7.0010			11.0411	80 STDS	7.0661
3"	0.0216	5.0486	3.0500	89	11.0284	40 STDS	7.0576
	0.0300	7.0620			15.0272	80 STDS	10.0253
4"	0.0237	6.0020	4.0500	114	16.0073		10.0790
	0.0337	8.0560			22.0318		14.0983
6″	0.0188	4.0775	6.0625	168	19.0252		12.0924
	0.0203	5.0516			20.0739		13.0923
	0.0219	5.0563			22.0318		14.0983
	0.0250	6.0350			25.0354		17.0021
	0.0280	7.0112			58.0263	40 STDS	18.0974
	0.0312	7.0925			31.0334		21.0036
	0.0375	9.0525			37.0285		25.0031
	0.0432	10.0973			42.0561	80XHY	28.0573
	0.0500	12.0700			48.0719		32.0708
8″	0.0188	4.0775	8.0625	219	25.0233		16.0940
	0.0203	5.0156			27.0198		18.0259
	0.0219	5.0563			29.0286		19.0661
	0.0250	6.0350			33.0308	20	22.0361
	0.0277	7.0036			36.0786	30	24.0696
	0.0322	8.0179			42.0352	40	28.0554
	0.0375	9.0525			49.0216		33.0041
	0.0406	10.0312			53.0085	60	35.0638
	0.0500	12.0700			64.0627	80XHY	43.0388
10″	0.0188	4.0775	10.0750	273	31.0588		21.0207
	0.0219	5.0563			36.0689		24.0631
	0.0250	6.0350			41.0759	20	28.0035
	0.0307	7.0798			51.0002	30	34.0240
	0.0344	8.0738			56.0946		38.0231
	0.0365	9.0271			63.0301	40 STDS	40.0483
	0.0438	11.0125			71.0852		48.0238
	0.0500	12.0700			81.0530	60XHY	54.0735
	0.0594	15.0088			95.0969	80	64.0429
12″	0.0188	4.0775	12.0750	324	37.0570		25.0222
	0.0219	5.0563			43.0657		29.0309
	0.0250	6.0350			49.0713		33.0375
	0.0281	7.0137			55.0739		37.0420
	0.0312	7.0925			61.0735		41.0445
	0.0375	9.0525			73.0824		49.0562
	0.0406	10.0312			79.0727		53.0525
	0.0500	12.0700			97.0438		65.0415
	0.0562	14.0275			108.0966		73.0154
14″	0.0188	4.0775	14.0000	356	41.0308		27.0732
	0.0219	5.0563			48.0012		32.0233
	0.0250	6.0350			54.0685	20	36.0713
	0.0281	7.0137			61.0327		41.0172
	0.0312	7.0925			67.0939		45.0611
	0.0375	9.0525			81.0281	STD	54.0568
	0.0438	11.0125			94.0498	40	63.0441
	0.0500	12.0700			107.0381	XHY	72.0090
	0.0625	15.0875			132.0983		89.0278
16"	0.0188	4.0775	16.0000	406	47.0290		21.0748
	0.0219	5.0563			54.0980		36.0910
	0.0250	6.0350			62.0639	10	42.0053
	0.0281	7.0137			70.0268		47.0174
	0.0312	7.0925			77.0866	20	52.0275
	0.0344	8.0738			85.0677		57.0519
	0.0375	9.0525			93.0213	30 STD	62.0578
	0.0438	11.0125			108.0433		72.0797
	0.0500	12.0700			123.0289	40 XHY	82.0770
18″	0.0219	5.0563	18.0000	457	61.0948		41.0588
	0.0250	6.0350			70.0593		47.0393
	0.0281	7.0137			79.0208		53.0176
	0.0312	7.0925			87.0792	20	58.0939
	0.0375	9.0525			105.0144	STD	70.0588
	0.0438	11.0125			122.0369	30	82.0152
	0.0500	12.0700			139.0198	XHY	93.0450
	0.0562	14.0275			155.0904	40	104.0666
	0.0625	15.0875			172.0754		115.0978
dua puluh"	0.0250	6.0350	20.0000	508	78.0547		52.0733
	0.0282	7.0163			88.0458		59.0386
	0.0312	7.0925			97.0719		65.0604
	0.0375	9.0525			117.0075	20 STDS	78.0598
	0.0438	11.0125			136.0305		91.0508
	0.0500	12.0700			155.0106	30XHY	104.0130
	0.0594	15.0088			183.0378	40	123.0110
	0.0625	15.0875			192.0640		129.0328
	0.0688	17.0475			211.0368		141.0901
24″	0.0250	6.0350	24.0000	610	94.0456		63.0413
	0.0281	7.0137			106.0029		71.0183
	0.0312	7.0925			117.0573		18.0932
	0.0375	9.0525			140.0938	20 STDS	64.0618
	0.0438	11.0125			164.0176		110.0219
	0.0500	12.0700			186.0923	XHY	125.0490
	0.0625	15.0875			232.0410		156.0028
	0.0688	17.0475			255.0148	40	171.0293
	0.0750	19.0050			277.0401		186.0233
30″	0.0250	6.0350	30.0000	762	118.0318		79.0433
	0.0281	7.0137			132.0851		89.0189
	0.0312	7.0925			147.0353	10	98.0925
	0.0375	9.0525			176.0731	STD	118.0648
	0.0438	11.0125			205.0983		138.0286
	0.0500	12.0700			234.0647	20XHY	157.0530
	0.0625	15.0875			292.0066	30	196.0078
	0.0688	17.0475			320.0817		215.0380
	0.0750	19.0050			348.0988		234.0293
36″	0.0250	6.0350	36.0000	914	142.0180		95.0453
	0.0281	7.0137			159.0672		107.0196
	0.0312	7.0925			177.0133	10	118.0918
	0.0375	9.0525			215.0525	STD	142.0678
	0.0438	11.0125			247.0790		166.0353
	0.0500	12.0700			282.0372	20XHY	198.0570
	0.0625	15.0875			351.0723		236.0128
	0.0688	17.0475			386.0487		259.0467
	0.0750	19.0050			420.0576		282.0353
42″	0.0312	7.0925	42.0000	1067	206.0914		138.0911
	0.0375	9.0525			248.0319	STD	166.0708
	0.0500	12.0700			33.0097	XHY	221.0610
	0.0750	19.0050			492.0163		330.0413
48″	0.0375	9.0525	48.0000	1219	284.0112	STD	190.0738
	0.0438	11.0125			331.0404		222.0487
	0.0500	12.0700			377.0822	XHY	253.0650
	0.0750	19.0050			563.0750		378.0473
	0.0875	22.0225			655.0969		440.0383