You location: Home > 8 to 18 NPS

8 to 18 NPS : Sizes 8 inch OD - 18 inch OD . Welded and Seamless Pipe

Welded and Seamless Carbon Steel Pipe

Longtaidi Pipe stocks a complete inventory of carbon steel
pipe, ranging in size from 1/8 inch to 48 inch OD. We carry
STD, Schedule 40, Schedule 80, and most intermediate wall
thicknesses. ERW and DSAW welded and SMLS seamless Steel Pipe.

Sizes 1/2 inch - 6 inch NPS

Sizes 8 inch - 18 inch NPS
Sizes 20 inch - 34 inch NPS

Sizes 36 inch - 144 inch NPS

CW- Continuous Weld
ERW- Electric Resistance Welded
DSAW- Double Submerged Arc Welded
SMLS pipe- Seamless steel pipe

Size NPS	Pipe O.D.	Wall Thickness	Pipe I.D.	Weight per Foot	Standard to XXHY	Schedule Pipe #	Section Modulus	Gallon Capacity Per Linear Foot
8	8.625	0.188	8.250	16.96			10.287	2.7769
		0.203	8.219	18.28			11.049	2.7561
		0.219	8.187	19.68			11.841	2.7350
		0.237	8.151	21.25			12.796	2.7094
		0.250	8.125	22.38		20	13.385	2.6934
		0.277	8.071	24.72		30	14.690	2.6577
		0.312	8.001	27.73			16.368	2.6112
		0.322	7.981	28.58	STD.	40	16.809	2.5988
		0.344	7.937	30.45			17.808	2.5706
		0.375	7.875	33.07			19.214	2.5302
		0.406	7.813	35.67		60	20.587	2.4902
		0.438	7.749	38.33			21.928	2.4505
		0.500	7.625	43.43	XHY	80	24.514	2.3721
		0.562	7.501	48.44			26.963	2.2956
		0.594	7.437	51.00		100	28.177	2.2425
		0.625	7.375	53.45			29.324	2.2191
		0.719	7.187	60.77		120	32.630	2.1074
		0.812	7.001	67.82		140	35.654	1.9998
		0.875	6.875	72.49	XXHY		37.562	1.9284
		0.906	6.813	74.76		160	38.476	1.8938
10	10.750	0.188	10.374	21.23			16.193	4.3909
		0.203	10.374	22.89			17.407	4.3655
		0.219	10.312	24.65			18.675	4.3390
		0.237	10.276	26.64			20.209	4.3066
		0.250	10.250	28.06		20	21.156	4.2865
		0.279	10.192	31.23			23.418	4.2382
		0.307	10.136	34.27		30	25.566	4.1917
		0.344	10.062	38.27			28.332	4.1311
		0.365	10.020	40.52	STD.	40	29.904	4.0963
		0.375	10.000	41.59			30.637	4.0800
		0.438	9.874	48.28			35.118	3.9786
		0.500	9.750	54.79	XHY	60	39.433	3.8785
		0.562	9.626	62.21			43.584	3.7797
		0.594	9.562	64.49		80	45.628	3.7304
		0.625	9.500	67.65			47.577	3.6822
		0.719	9.312	77.10		100	53.307	3.5379
		0.812	9.126	86.26			58.633	3.3980
		0.844	9.062	89.38		120	63.391	3.3505
		1.000	8.750	104.23	XXHY	140	68.429	3.1237
		1.125	8.500	115.75		160	74.309	2.9378
12	12.750	0.188	12.374	25.25			22.968	6.2471
		0.203	12.374	27.23			24.706	6.2169
		0.219	12.312	29.34			26.524	6.1852
		0.237	12.276	31.70			28.727	6.1465
		0.250	12.250	33.41		20	30.090	6.1225
		0.281	12.188	37.46			33.602	6.0602
		0.312	12.126	41.48			37.060	5.9982
		0.330	12.090	43.81		30	38.973	5.9636
		0.344	12.062	45.62			40.465	5.9365
		0.375	12.000	49.61	STD.		43.817	5.8752
		0.406	11.938	53.57		40	47.104	5.8146
		0.438	11.874	57.65	XHY		50.367	5.7534
		0.500	11.750	65.48			56.713	5.6329
		0.562	11.626	73.22		60	62.828	5.5147
		0.625	11.500	81.01			68.811	5.3958
		0.688	11.374	88.71		80	74.636	5.2782
		0.750	11.250	96.21			80.145	5.1637
		0.844	11.062	107.42		100	88.209	4.9926
		1.000	10.750	125.61	XXHY	120	100.650	4.7149
		1.125	10.500	139.81		140	109.919	4.4982
		1.312	10.126	160.42		160	122.561	4.1835
14	14.000	0.250	13.500	36.75		10	36.471	7.4358
		0.281	13.438	41.21			40.755	7.3671
		0.312	13.376	45.65		20	44.979	7.2987
		0.344	13.312	50.22			49.144	7.2307
		0.375	13.250	54.62	STD.	30	53.251	7.1629
		0.406	13.188	59.00			57.301	7.0955
		0.438	13.124	63.50		40	61.356	7.0274
		0.459	13.082	66.44			64.023	6.9824
		0.500	13.000	72.16	XHY		69.108	6.8952
		0.562	12.876	80.73			76.701	6.7632
		0.594	12.812	85.13		60	80.466	6.6972
		0.625	12.750	89.36			84.076	6.6325
		0.688	12.624	97.91			91.317	6.5021
		0.750	12.500	106.23		80	98.188	6.3750
		0.812	12.376	114.48			104.909	6.2491
		0.938	12.124	130.98		100	117.907	5.9972
		1.094	11.812	150.93		120	132.916	5.6925
		1.250	11.500	170.37		14O	146.781	5.3958
		1.406	11.188	189.29		160	159.562	5.1070
16	16.000	0.188	15.624	31.78			36.498	9.9696
		0.203	15.594	34.28			39.298	9.9214
		0.219	15.562	36.95			42.268	9.8807
		0.237	15.526	39.94			45.759	9.8326
		0.250	15.500	42.09		10	47.958	9.8022
		0.281	15.438	47.22			53.636	9.7233
		0.312	15.376	52.32		20	59.245	9.6447
		0.344	15.312	57.57			64.787	9.5665
		0.375	15.250	62.64	STD.	30	70.261	9.4885
		0.406	15.188	67.68			75.668	9.4109
		0.438	15.124	72.86			81.008	9.3336
		0.469	15.062	77.87			86.283	9.2566
		0.500	15.000	82.85	XHY	40	91.493	9.1800
		0.562	14.876	92.75			101.720	9.0276
		0.625	14.750	102.72			111.690	8.8765
		0.656	14.688	107.60		60	116.572	8.8021
		0.688	14.624	112.62			121.519	8.7255
		0.750	14.500	122.27			130.880	8.5782
		0.812	14.376	131.84		80	140.081	8.4321
		1.031	13.938	164.98		100	170.598	7.9261
		1.219	13.562	192.61		120	194.599	7.5042
		1.438	13.124	223.85		140	220.150	7.0274
		1.594	12.812	245.48		160	236.857	6.6972
18	18.000	0.219	17.562	41.63			53.741	12.583
		0.237	17.526	45.00			57.983	12.532
		0.250	17.500	47.44			61.015	12.495
		0.281	17.438	53.23			68.284	12.406
		0.312	17.376	58.99		20	75.475	12.317
		0.344	17.312	64.93			82.589	12.229
		0.375	17.250	70.65	STD.		89.626	12.141
		0.406	17.188	76.36			96.587	12.053
		0.438	17.124	82.23		30	103.470	11.965
		0.469	17.062	87.89			110.280	11.878
		0.500	17.000	93.54	XHY		117.020	11.791
		0.562	16.876	104.76		40	130.270	11.618
		0.625	16.750	116.09			143.230	11.447
		0.688	16.624	127.32		60	156.044	11.275
		0.750	16.500	138.30			168.290	11.108
		0.812	16.376	149.20			180.356	10.941
		0.938	16.124	171.08		80	203.955	10.607
		1.156	15.688	208.15		100	242.250	10.041
		1.275	15.250	227.96		120	277.636	9.489
		1.562	14.876	274.48		140	305.535	9.029
		1.781	14.438	308.79		160	335.638	8.505

Carbon steel pipe Standard: ASTM A106 pipe; ASTM A53 pipe; ASTM A192 pipe; ASTM A252 pipe; ASTM A179 pipe; DIN 1629 pipe; DIN 17175 pipe

Alloy pipe Standard: ASTM A335 pipe; ASTM A210 pipe; ASTM A213 pipe; ASTM A234 pipe; ASTM A519 pipe

Stainless pipe metrial: 304, 304L, 304SS pipe; 310, 310S pipe; 316, 316L pipe

Pipe Fitting Metrial: Carbon steel: A234 WPB pipe; Stainless steel: 304,316 pipe; Alloy steel: A234 WP5 WP9 WP11 WP22 pipe