Pipes and Tubing

01

Pipe — how size is identified

NPS

Pipe is identified by nominal pipe size (NPS), which is not the same as the measured outside diameter.

For sizes 1/8″ through 12″, the actual outside diameter is larger than the corresponding NPS — consult the dimension table below. For sizes 14″ and larger, the outside diameter is the same as the NPS.

Stainless steel bright annealed pipes and tubing.

02

Pipe specifications

ASTM / ASME

Table 1 — ASTM/ASME designations

Designation	Title
A/SA 312	Specification for Seamless and Welded Austenitic Stainless Steel Pipe
A/SA 358	Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Alloy Steel Pipe for High-Temperature Service
A/SA 376	Specification for Seamless Austenitic Stainless Steel Pipe for High-Temperature Central-Station Service
A/SA 409	Specification for Welded Large Diameter Austenitic Stainless Steel Pipe for Corrosive or High-Temperature Service
A 778	Specification for Welded Unannealed Stainless Steel Pipe

Permissible variation in outside diameter — A/SA 312

Nominal pipe size (in)	Plus	Minus
1/8 to 1 1/2, incl.	1/64 (0.015)	1/32 (0.031)
Over 1 1/2 to 4, incl.	1/32 (0.031)	1/32 (0.031)
Over 4 to 8, incl.	1/16 (0.062)	1/32 (0.031)
Over 8 to 18, incl.	3/32 (0.093)	1/32 (0.031)
Over 18 to 24, incl.	1/8 (0.125)	1/32 (0.031)

Bursting pressure

Barlow's formula

P = 2 (S × T) ÷ O.D.

P — bursting pressure, p.s.i.
T — wall thickness, inches
O.D. — outside diameter, inches
S — tensile strength

Typical tensile strengths (S)

Stainless steel (300 series)	70,000 – 75,000 psi
Chrome moly (P1 to P22)	55,000 – 60,000 psi
Alloy 20	80,000 psi
904L	70,000 psi
Duplex	90,000 psi

Other services available. Pipe cutting up to 26″ OD, PMI and further processing on request.

03

Pipe dimensions & weights

Stainless & alloys

Wall thickness in inches, weight in pounds per foot, theoretical bursting pressure in p.s.i. calculated by Barlow's formula.

Pipe dimensions and weights NPS 1/8″ to 56″ across every schedule — 318 rows

NPS	O.D. (in)	DN	Schedule	Wall	Weight / ft	Bursting psi
1/2	0.840	15mm	5S	0.065	0.5383	11607
			5	0.065	0.5383	11607
			10S	0.083	0.6710	14821
			10	0.083	0.6710	14821
			40S	0.109	0.8510	19464
			40	0.109	0.8510	19464
			80S x XS	0.147	1.0880	26250
			80	0.147	1.0880	26250
			160	0.187	1.304	33393
			XXS	0.294	1.714	52500
3/4	1.050	20mm	5S	0.065	0.684	9286
			5	0.065	0.684	9286
			10S	0.083	0.857	11857
			10	0.083	0.857	11857
			40S	0.113	1.131	16143
			40	0.113	1.131	16143
			80S x XS	0.154	1.474	22000
			80	0.154	1.474	22000
			160	0.218	1.937	31143
			XXS	0.308	2.441	44000
1	1.315	25mm	5S	0.065	0.868	7414
			5	0.065	0.868	7414
			10S	0.109	1.404	12433
			10	0.109	1.404	12433
			40S	0.133	1.679	15171
			40	0.133	1.679	15171
			80S x XS	0.179	2.172	20418
			80	0.179	2.172	20418
			160	0.25	2.844	28517
			XXS	0.358	3.659	40837
1 1/4	1.660	32mm	5S	0.065	1.107	5873
			5	0.065	1.107	5873
			10S	0.109	1.806	9849
			10	0.109	1.806	9849
			40S	0.140	2.273	12651
			40	0.140	2.273	12651
			80S x XS	0.191	2.997	17259
			80	0.191	2.997	17259
			160	0.25	3.765	22590
			XXS	0.382	5.214	34518
1/8	0.405	6mm	5	0.035	0.1383	12963
			10S	0.049	0.1863	18148
			10	0.049	0.1863	18148
			40S	0.068	0.2447	25185
			40	0.068	0.2447	25185
			80S x XS	0.095	0.3145	35185
			80	0.095	0.3145	35185
1/4	0.540	8mm	5	0.049	0.2570	13611
			10S	0.065	0.3297	18056
			10	0.065	0.3297	18056
			40S	0.088	0.4248	24444
			40	0.088	0.4248	24444
			80S x XS	0.119	0.5351	33056
			80	0.119	0.5351	33056
3/8	0.675	10mm	5	0.049	0.3276	10889
			10S	0.065	0.4235	14444
			10	0.065	0.4235	14444
			40S	0.091	0.5676	20222
			40	0.091	0.5676	20222
			80S x XS	0.126	0.7388	28000
			80	0.126	0.7388	28000
1 1/2	1.900	40mm	5S	0.065	1.274	5132
			5	0.065	1.274	5132
			10S	0.109	2.085	8605
			10	0.109	2.085	8605
			40S	0.145	2.718	11447
			40	0.145	2.718	11447
			80S x XS	0.200	3.631	15789
			80	0.200	3.631	15789
			160	0.281	4.859	22184
			XXS	0.400	6.408	31578
2	2.375	50mm	5S	0.065	1.604	4105
			5	0.065	1.604	4105
			10S	0.109	2.638	6884
			10	0.109	2.638	6884
			40S	0.154	3.653	9726
			40	0.154	3.653	9726
			80S x XS	0.218	5.022	13768
			80	0.218	5.022	13768
			160	0.344	7.444	21726
			XXS	0.436	9.029	27537
2 1/2	2.875	65mm	5S	0.083	2.475	4330
			5	0.083	2.475	4330
			10S	0.120	3.531	6261
			10	0.120	3.531	6261
			40S	0.203	5.793	10591
			40	0.203	5.793	10591
			80S x XS	0.276	7.661	14400
			80	0.276	7.661	14400
			160	0.375	10.010	19565
			XXS	0.552	13.700	28800
3	3.500	80mm	5S	0.083	3.029	3557
			5	0.083	3.029	3557
			10S	0.120	4.332	5143
			10	0.120	4.332	5143
			40S	0.216	7.576	9257
			40	0.216	7.576	9257
			80S x XS	0.300	10.250	12857
			80	0.300	10.250	12857
			160	0.437	14.320	18729
			XXS	0.600	18.580	25714
3 1/2	4.000	90mm	5S	0.083	3.472	3112
			5	0.083	3.472	3112
			10S	0.120	4.937	4500
			10	0.120	4.937	4500
			40S	0.226	9.109	8475
			40	0.226	9.109	8475
			80S x XS	0.318	12.510	11925
			80	0.318	12.510	11925
			XXS	0.636	22.850	23850
4	4.500	100mm	5S	0.083	3.915	2767
			5	0.083	3.915	2767
			10S	0.120	5.613	4000
			10	0.120	5.613	4000
			40S	0.237	10.790	7900
			40	0.237	10.790	7900
			80S x XS	0.337	14.980	11233
			80	0.337	14.980	11233
			120	0.437	19.000	14600
			160	0.531	22.510	17700
			XXS	0.674	27.540	22466
4 1/2	5.000	115mm	40S	0.247	12.540	7410
			80S x XS	0.355	17.610	10650
			XXS	0.710	32.530	21300
5	5.563	125mm	5S	0.109	6.349	2939
			5	0.109	6.349	2939
			10S	0.134	7.770	3613
			10	0.134	7.770	3613
			40S	0.258	14.620	6957
			40	0.258	14.620	6957
			80S x XS	0.375	20.780	10111
			80	0.375	20.780	10111
			120	0.500	27.040	13482
			160	0.625	32.960	16852
			XXS	0.750	38.550	20223
6	6.625	150mm	5S	0.109	7.585	2468
			5	0.109	7.585	2468
			10S	0.134	9.290	3034
			10	0.134	9.290	3034
			40S	0.280	18.970	6340
			40	0.280	18.970	6340
			80S x XS	0.432	28.570	9781
			80	0.432	28.570	9781
			120	0.562	36.390	12725
			160	0.719	43.350	16279
			XXS	0.864	53.160	19562
8	8.625	200mm	5S	0.109	9.914	1896
			5	0.109	9.914	1896
			10S	0.148	13.400	2574
			10	0.148	13.400	2574
			20	0.250	22.360	4347
			30	0.277	24.700	4817
			40S	0.322	28.550	5600
			40	0.322	28.550	5600
			60	0.406	35.640	7060
			80S x XS	0.500	43.390	8696
			80	0.500	43.390	8696
			100	0.594	50.950	10330
			120	0.719	60.710	12504
			140	0.812	67.670	14121
			160	0.906	74.790	15756
			XXS	0.875	72.420	15217
10	10.750	250mm	5S	0.134	15.190	1870
			5	0.134	15.190	1870
			10S	0.165	18.650	2302
			10	0.165	18.650	2302
			20	0.250	28.040	3488
			30	0.307	34.240	4283
			40S	0.365	40.480	5093
			40	0.365	40.480	5093
			60	0.500	54.740	6977
			80S x XS	0.500	54.740	6977
			80	0.594	64.430	8288
			100	0.719	77.030	10033
			120	0.844	89.200	11777
			140	1	104.100	13953
			160	1.125	115.600	15697
7	7.625	175mm	40S	0.301	23.540	5921
			80S x XS	0.500	38.040	9836
			XXS	0.875	63.080	17213
9	9.625	225mm	40S	0.342	33.910	5330
9	9.625	225mm	80S x XS	0.500	48.730	7792
12	12.750	300mm	5S	0.156	21.070	1835
			5	0.165	22.180	1941
			10S	0.180	24.160	2118
			10	0.180	24.160	2118
			20	0.250	33.380	2941
			30	0.330	43.770	3882
			40S	0.375	49.560	4412
			40	0.406	53.520	4776
			60	0.562	73.150	6611
			80S x XS	0.500	65.420	5882
			80	0.688	88.630	8094
			100	0.844	107.300	9929
			120	1.000	125.500	11765
			140	1.125	136.700	13235
			160	1.312	160.300	15435
14	14.000	350mm	5S	0.156	23.070	1671
			10S	0.188	27.730	2014
			10	0.250	36.710	2679
			20	0.312	45.610	3343
			30	0.375	54.570	4017
			40S	0.375	54.570	4018
			40	0.438	63.440	4692
			60	0.594	85.050	6364
			80S x XS	0.500	72.090	5357
			80	0.750	106.100	8035
			100	0.938	130.900	10050
			120	1.094	150.800	11721
			140	1.250	170.200	13393
			160	1.406	189.100	15064
16	16.000	400mm	5S	0.165	27.900	1546
			10S	0.188	31.750	1762
			10	0.250	42.050	2344
			20	0.312	52.270	2925
			30	0	.375	3515
			40S	0.375	62.580	3516
			40	0.500	82.770	4687
			60	0.656	107.500	6150
			80S x XS	0.500	82.770	4688
			80	0.844	136.600	7912
			100	1.031	164.800	9665
			120	1.219	192.400	11428
			140	1.438	223.600	13481
			160	1.594	245.300	14943
18	18.000	450mm	5S	0.165	31.430	1375
			10S	0.188	35.760	1566
			10	0.250	47.390	2083
			20	0.312	58.940	2600
			30	0.438	82.100	3650
			40S	0.375	70.590	3125
			40	0.562	104.700	4683
			60	0.750	138.200	6250
			80S x XS	0.500	93.450	4167
			80	0.938	170.900	7817
			100	1.156	208.000	9633
			120	1.375	244.100	11458
			140	1.562	274.200	13016
			160	1.781	308.500	14842
20	20.000	500mm	5S	0.188	39.780	1410
			10S	0.218	46.050	1635
			10	0.250	52.730	1875
			20	0.375	78.600	2812
			30	0.500	104.100	3750
			40S	0.375	78.600	2812
			40	0.594	123.100	4455
			60	0.812	166.400	6090
			80S x XS	0.500	104.100	3750
			80	1.031	208.900	7733
			100	1.281	256.100	9607
			120	1.500	296.400	11250
			140	1.750	341.100	13125
			160	1.969	379.200	14767
22	22.000	550mm	5S	0.188	43.880	1281
22	22.000	550mm	10S	0.218	50.690	1486
11	11.750	275mm	40S	0.375	45.560	4787
11	11.750	275mm	80S x XS	0.500	60.080	6383
24	24.000	600mm	5S	0.218	55.370	1362
			10S	0.250	63.410	1563
			10	0.250	63.410	1563
			20	0.375	96.420	2343
			30	0.562	140.700	3512
			40S	0.375	94.620	2344
			40	0.688	171.300	4300
			60	0.969	238.400	6056
			80S x XS	0.500	125.500	3125
			80	1.219	296.600	7619
			100	1.531	367.400	9569
			120	1.812	429.400	11325
			140	2.062	483.100	12888
			160	2.344	542.100	14650
30	30.000	750mm	5S	0.250	79.430	1250
			10S	0.312	98.930	1560
			10	0.312	98.930	1560
			20	0.500	157.530	2500
			30	0.625	196.080	3125
			40S	0.375	118.650	1875
			80S x XS	0.500	157.530	2500
26	26.000	650mm	10	0.312	85.600	1560
			20	0.500	136.170	2885
			40S	0.375	102.630	2163
			80S x XS	0.500	136.170	2885
28	28.000	700mm	10	0.312	92.260	1671
			20	0.500	146.850	2679
			30	0.625	182.730	3348
			40S	0.375	110.640	2008
32	32.000	800mm	10	0.312	105.590	1462
			20	0.500	168.210	2343
			30	0.625	209.430	2929
			40S	0.375	126.660	1757
			40	0.688	230.080	3225
			80S x XS	0.500	168.210	2343
34	34.000	850mm	10	0.312	112.250	1376
			20	0.500	178.890	2205
			30	0.625	222.780	2757
			40S	0.375	134.670	1654
			40	0.688	244.770	3035
36	36.000	900mm	10	0.312	118.920	1300
			30	0.625	236.130	2604
			40S	0.375	142.680	1562
			40	0.750	282.350	3125
			80S x XS	0.500	189.570	2083
40	40.000	1000mm	40S	0.375	158.700	1406
40	40.000	1000mm	80S x XS	0.500	210.930	1875
44	44.000	1100mm	40S	0.375	174.720	1278
44	44.000	1100mm	80S x XS	0.500	232.290	1705
48	48.000	1200mm	40S	0.375	190.740	1171
48	48.000	1200mm	80S x XS	0.500	253.650	1562
52	52.000	1300mm	40S	0.375	206.760	1081
			40	0.750	410.510	2163
			80S x XS	0.500	275.010	1442
			120	PRESSURE	FOR	WORKING
56	56.000	1400mm	40S	0.375	222.780	1004
			40	0.750	442.550	2008
			80S x XS	0.500	296.370	1339
60	60.000	1500mm	40S	0.3750	238.800	937
			40	0.750	474.590	1875
			80S x XS	0.500	317.730	1250

04

Tube — how size is identified

Actual O.D.

Tubing is identified by its actual outside diameter, plus or minus the applicable tolerance — not by a nominal size.

When ordering, please specify both the outside diameter and the wall thickness. For imperial sizes: 1/2″ O.D. × .035″ wall. For metric sizes: 12 mm O.D. × 1 mm wall.

Table 1 — tubing designations

ASTM/ASME	Title
A213 / SA213	Seamless Ferritic and Austenitic Alloy-Steel Boiler, Super-Heater and Heat Exchanger Tubes
A249 / SA249	Welded Austenitic Stainless Steel Boiler, Super-Heater, Heat Exchanger and Condenser Tubes
A269	Seamless and Welded Austenitic Stainless Steel Tubing for General Service

05

Tube dimensions & weights

By outside diameter

Tube dimensions and weights O.D. 3/4″ upward, every wall thickness — 260 rows

O.D.	O.D. (in)	Wall	Weight / ft	Bursting psi
3/4	0.750	0.020	0.155	3998
		0.025	0.193	5003
		0.028	0.215	5603
		0.035	0.215	6998
		0.049	0.366	9803
		0.065	0.475	12997
		0.083	0.591	16598
		0.095	0.664	18998
		0.109	0.746	21803
		0.120	0.807	24000
		0.156	0.990	31200
		0.188	1.128	37403
7/8	0.875	0.020	0.183	3428
		0.025	0.227	4283
		0.028	0.253	4800
		0.035	0.314	6000
		0.049	0.432	8400
		0.065	0.562	11145
		0.083	0.702	14228
		0.095	0.791	16283
		0.109	0.891	18863
		0.120	0.968	20573
		0.156	1.198	26745
		0.188	1.379	32055
1	1.000	0.020	0.209	3000
		0.025	0.260	3750
		0.028	0.290	4200
		0.035	0.360	5250
		0.049	0.497	7350
		0.065	0.649	9750
		0.083	0.812	12450
		0.095	0.918	14250
		0.109	1.037	16350
		0.120	1.128	18000
		0.156	1.406	23400
		0.188	1.630	28050
		0.250	2.003	37500
1 1/8	1.125	0.020	0.236	2663
		0.025	0.294	3330
		0.028	0.328	3735
		0.035	0.407	4665
		0.049	0.463	6533
		0.065	0.736	8670
		0.083	0.923	11070
		0.095	1.045	12668
		0.109	1.183	14535
		0.120	1.288	15998
		0.156	1.614	20798
		0.188	1.881	24930
		0.250	2.336	33330
1 1/4	1.250	0.020	0.262	2400
		0.025	0.326	3000
		0.028	0.365	3360
		0.035	0.454	4200
		0.049	0.628	5880
		0.065	0.822	7800
		0.083	1.034	9960
		0.095	1.172	11400
		0.109	1.328	13080
		0.120	1.502	14400
		0.156	1.823	18720
		0.188	2.132	22440
		0.250	2.670	30000
1 3/8	1.375	0.028	0.402	3053
		0.035	0.501	3818
		0.049	0.694	5348
		0.065	0.909	7087
		0.083	1.145	9053
		0.095	1.299	10365
		0.109	1.473	11888
		0.120	1.608	13088
		0.156	2.031	17018
		0.188	2.383	20400
		0.250	3.004	27270
1 1/2	1.500	0.028	0.440	2948
		0.035	0.547	3503
		0.049	0.759	4898
		0.065	0.996	6503
		0.083	1.256	8303
		0.095	1.426	9503
		0.109	1.619	10890
		0.120	1.769	12000
		0.156	2.239	15600
		0.188	2.634	18698
		0.250	3.338	24998
1 3/4	1.750	0.035	0.641	3000
		0.049	0.890	4200
		0.065	0.170	5573
		0.083	1.478	7118
		0.095	1.679	8145
		0.109	1.910	9345
		0.120	2.160	10283
		0.156	2.656	13373
		0.188	3.136	16028
		0.250	4.005	21428
2	2.000	0.035	0.734	2625
		0.049	1.021	3675
		0.065	1.343	4875
		0.083	1.699	6225
		0.095	1.933	7125
		0.109	2.201	8175
		0.120	2.409	9000
		0.156	3.072	11700
		0.188	3.638	14025
		0.250	4.673	18750
		,	0.313	23475
		0.375	6.508	28125
		0.500	8.010	37500
2 1/4	2.250	0.035	0.828	2333
		0.049	1.152	3270
		0.065	1.517	4335
		0.083	1.921	5535
		0.095	2.250	6330
		0.109	2.556	7268
		0.120	2.730	8003
		0.156	3.489	10403
		0.188	4.140	12465
		0.250	5.340	16665
		0.313	6.475	20865
		0.375	7.509	24998
		0.500	9.345	33330
2 1/2	2.500	0.035	0.921	2100
		0.049	1.283	2940
		0.065	1.690	3900
		0.083	2.143	4980
		0.095	2.440	5700
		0.109	2.783	6540
		0.120	3.050	7200
		0.156	3.905	9360
		0.188	4.642	11200
		0.250	6.008	15000
		0.313	7.311	18780
		0.375	8.511	22500
		0.500	10.680	30000
2 3/4	2.750	0.035	1.015	1913
		0.049	1.413	2670
		0.065	1.864	3548
		0.083	2.364	4530
		0.095	2.699	5183
		0.109	3.177	5948
		0.120	3.495	6548
		0.156	4.322	8513
		0.188	5.144	10200
		0.250	6.675	13636
		0.313	8.147	17070
		0.375	9.512	20453
		0.500	12.015	27270
3	3.000	0.035	1.108	1748
		0.049	1.544	2453
		0.065	2.037	3248
		0.083	2.586	4148
		0.095	2.947	4748
		0.109	3.393	5453
		0.120	3.691	6000
		0.156	4.739	7800
		0.188	5.646	9353
		0.250	7.343	12503
		0.313	8.982	15653
		0.375	10.513	18750
		0.500	13.350	24998
3 1/4	3.250	0.065	2.211	3000
		0.083	2.805	3833
		0.095	3.201	4388
		0.109	3.634	5033
		0.120	3.975	5535
		0.156	5.155	7200
		0.188	6.148	8633
		0.250	8.010	11535
		0.313	9.818	14445
		0.375	11.514	17310
		0.500	14.685	23078
3 1/2	3.500	0.065	2.385	2783
		0.083	3.029	3555
		0.095	3.455	4073
		0.109	3.976	4673
		0.120	4.385	5145
		0.156	5.571	6683
		0.188	6.650	8028
		0.250	8.678	10718
		0.313	10.650	13418
		0.375	12.515	16073
		0.500	16.020	21428
3 3/4	3.750	0.065	2.558	2603
		0.083	3.248	3323
		0.095	3.708	3803
		0.109	4.235	4358
		0.120	4.650	4800
		0.156	5.988	6240
		0.188	7.152	7478
		0.250	9.345	9998
		0.313	11.490	12518
		0.375	13.520	15000
		0.500	17.355	20003
4	4.000	0.065	2.732	2438
		0.083	3.472	3112
		0.095	3.962	3563
		0.109	4.530	4088
		0.120	4.963	4500
		0.156	6.404	5850
		0.188	7.654	7013
		0.250	10.010	9375
		0.313	12.330	11738
		0.375	14.520	14063
		0.500	18.690	18750
4 1/4	4.250	0.083	3.690	2929
		0.095	4.220	3353
		0.109	4.820	3847
		0.120	5.290	4235
		0.156	6.840	5506
		0.188	7.935	6635
		0.250	10.700	8824
		0.313	13.200	11047
		0.375	15.500	13235
		0.500	20.000	17647
4 1/2	4.500	0.083	3.920	2767
		0.095	4.470	3167
		0.109	5.110	3633
		0.120	5.610	4000
		0.156	7.350	5200
		0.188	8.815	6267
		0.250	11.400	8333
		0.313	14.000	10433
		0.375	16.500	12500
		0.500	21.400	16667
4 3/4	4.750	0.083	4.140	2621
		0.095	4.720	3000
		0.109	5.400	3442
		0.120	5.930	3789
		0.156	7.670	4926
		0.188	9.311	5937
		0.250	12.000	7895
		0.313	14.800	9884
		0.375	17.500	11842
		0.500	22.700	15789
5	5.000	0.109	5.690	3270
		0.120	6.250	3600
		0.156	8.100	4680
		0.188	9.570	5640
		0.250	12.700	7500
		0.313	15.700	9390
		0.375	18.500	11250
		0.500	24.000	15000
5 1/4	5.250	0.156	8.515	4457
		0.188	10.148	5371
		0.250	13.350	7143
		0.313	16.500	8943
		0.375	19.500	10714
		0.500	25.350	14286
5 1/2	5.500	0.156	8.930	4255
		0.188	10.725	5127
		0.250	14.000	6818
		0.313	17.300	8536
		0.375	20.500	10227
		0.500	26.700	13636
6	6.000	0.156	10.750	3900
		0.188	11.660	4700
		0.250	15.400	6250
		0.313	19.000	7825
		0.375	22.500	9375
		0.500	29.400	12500

Bursting pressures are theoretical. They are calculated by Barlow's formula from the tensile strengths above and are given for comparison, not as a working pressure rating. Confirm the working pressure for your service at quotation.

Pipes & Tubing Tables

Pipe — how size is identified

Pipe specifications

Table 1 — ASTM/ASME designations

Permissible variation in outside diameter — A/SA 312

Barlow's formula

Pipe dimensions & weights

Tube — how size is identified

Table 1 — tubing designations

Tube dimensions & weights

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