ASTM Seamless Pipe

Steel Grade Dimension Dimension Tolerance

Standard No	Steel Grade	Standard Name	Dimension Range
ASTM A53	Grade A, Grade B	Black & Hot Dipped Zinc-Coated Seamless Pipe	0.405-26 inch 10.3-660 mm
ASTM A 106	Grade A, Grade B, Grade C	Seamless Carbon Steel Pipe for High-Temperature Service	NPS 1/8-NPS 48 DN6-DN1200
ASTM A161	Law Carbon Steel (LC), Grade TI	Seamless Low Carbon and Carbon Molybdenum Steel Still Tubes for Refinery Service	2.9 inch 50.8-228.6 mm
ASTM A179		Seamless Cold-Drawn Law-Carbon Steel Heat-Exchanger nut Condenser Tubes	1/8-3 inch 3.2-76.2 mm
ASTM A192		Seamless Carbon Steel Boiler Tubes For High-Pressure Service	1/2-7-7 inch 12.7-177.8mm
ASTM A199	T5, T9, T11, T22	Seamless Cold Drawn Intermediate Alloy Steel Heat Exchanger and Condenser Tubes	1/8-3 inch 3.2-76.2 mm
ASTM A209	Grade T1, Grade T1a, Grade T1b	Seamless Carbon-Molybdenum Alloy-Steel Boiler and Super-heater Tubes	1/2-5 inch 12.7-127 mm
ASTM A210	Grade A-1, Grade C	Seamless Medium-Carbon Steel Boiler and Super-heater Tubes	1/2.5 inch 12.7-127 mm
ASTM A213	T2, T5, T5b, T5c, T9, T11, T12, T17, T21, T22, T23, T24, T36, T91, T92, T122, T911	Seamless Ferritic and Austenitic Alloy-Steel Boiler, Super-heater, mid Heat-Exchanger Tubes	1/8.5 smelt 3.2-127 mm
ASTM A252	Grade 1, Grade 2, Grade 3	Seamless Steel Pipe Piles	6.24 inch
ASTM A333	Grade 1, Grade 3, Grade 4, Grade 6, Grade 7, Grade 8, Grade 9, Grade 10, Grade 11	Seamless Steel Pipe for Low-Temperature Service	0.405-26 inch 10.3-660 mm
ASTM A334	Grade 1, Grade 3, Grade 6, Grade 7, Grade 8 Grade 9, Grade 11	Seamless Carbon and Alloy-Steel Tubes for Low-Temperature Service	0.405-26 inch 10.3-660 mm
ASTM A335	Pl, P2, P5, P5b, P5c, P9, P11, PIZ, P15, P21, P22 P23, P36, P91, P92, P122, P911	Seamless Ferritic Alloy Steel Pipe for High-Temperature Service	0.405-26 inch 10.3-660 mm
ASTM A423	Grade 1, Grade 2	Seamless Law-Alloy Steel Tubes	1/2-5 null 12.7-127 mm
ASTM A500	Grade A, Grade B, Grade C, Grade D	Cold-Formed Seamless Carbon Steel Structural Tubing in Rounds and Shapes	≤64 inch ≤1603mm
ASTM A501	Grade A, Grade B	Hot-Formed Seamless Carbon Steel Structural Tubing	NPS1/2-NPS24
ASTM A519	MT 1010, MT 1015,MT X 1015, MT 1020,MT X1020,1008,1010, 1012,1015,1016,1017,1018,1019, 1020,1021,1022,1025,1026, 1030,1035,1040,1045,1050, 1518,1524,1541,1330,1335, 1340,1345,3140,E3310,4012, 4023,4024,4027,4028,4037, 4042,4047,4063,4118,4130, 4135,4137,4140,4142,4145,4147, 4150,4320,4337,E4337,4340, E4340,4422,4427,4520,4615, 4617,4620,4621,4718,4720,4815, 4817,4820,5015,5046,5115,5120, 5130,5132,5135,5140,5145,5147, 5150,5155,5160,52100,E50100, E51100,E52100,6118,6120,6150, E7140,8115,8615,8617,8620,8622, 8625,8627,8630,8637,8640,9642, S645,8650,8655,8660,8720,8735, 8740,8742,8822,9255,9260,9262, E9310,9840,9850,50B40,50B44, 58B46,50B50,50B60,51B60,81B45, 86B45,94B15,94B17,94B30,94B40, 1118,11L1S, 1132,1137,1141,1144, 1213,12L14,1215	Seamless Carbon and Alloy Steel Mechanical Tubing	≤ 12.75 inch ≤323.8 mm
ASTM A523	Grade A, Grade B	Plan End Seamless Steel Pipe for High-Pressure Pipe-Type Cable Circuits	NPS4-NPS12
ASTM A524	Grade I, Grade II	Seamless Carbon Steel Pipe for Atmospheric and Lower Temperatures	NPS1/S-NPS26
ASTM A556	Grade A2, Grade B2, Grade C2	Seamless Cold-Drawn Carbon Steel Feed-water Heater Tubes	5/8-115inch 15.9-31.8 mm
ASTM A589	Grade A, Grade B	Seamless Carbon Steel Water-Well Pipe	6.16 inch 168.3-406.4mm
ASTM A795	Grade A, Grade B	Flack and Hot-Dipped Zinc-Coated Seamless Pipe for Fire Protection Use	1.05-10.75 inch 26.7-273.1 mm

Standard	Tolerance
Standard	Outside Diameter		Wall Thickness		Unit Weight
ASTM A53	≤1.5 inch	±1/64inch [0.4mm]	±12.5%		±10%
ASTM A53	>= 2 inch	±1%	±12.5%		±10%
ASTM A 106	1/8-1.5 inch 6-40 mm	± 1/64inch [0.4mm]	±12.5%		+10% -3.5%
	1.5-4 inch 40-100mm	±1/32inch [0.8mm]
	4-8 inch 100.200 mm	+ 1/16inch[1.6mm] -1/32inch[0.8mm]
	8-18 inch 200-450 mm	+ 3/32inch[2.4mm] -1/32inch[0.8mm]
	18.26 inch 450-650 mm	+ 1/8inch3.2mm] -1/32inch[0.8mm]
	26.34 inch 650-850 mm	+5/32inch[4.0mm] -1/32inch[0.8mm]
	34.48 inch 850-1200 mm	+3/16inch[4.8mm] -1/32inch[0.8mm]
ASTM A213			±10%
ASTM A252	±1%		±12.5%		+15% -5%
ASTM A335	1/8-1.5 inch 6-40 mm	+3/16inch[4.8mm] -1/32inch[0.8mm]	1/8-2.5inch 6-65mm	+20% -12.5%
	>1.5-4inch >40.100mm	+3/16inch[4.8mm] -1/32inch[0.8mm]	1/8-2.5inch 6-65mm	+20% -12.5%
	>4-8inch >100-200mm	+3/16inch[4.8mm] -1/32inch[0.8mm]	>2.5inch 65mm t/D ≤ 5%	+22.5% -12.5%
	>4-8inch >200-300mm	+3/16inch[4.8mm] -1/32inch[0.8mm]	>2.5inch 65mm t/D ≤ 5%	+22.5% -12.5%
	>12inch >300mm	±1%	>2.5inch 65mm t/D> 5%	+15.0% -12.5%
ASTM A500	≤1.9inch 48mm	±0.5%	10%
ASTM A500	>=2.0inch 50mm	±0.75%	10%
ASTM A501	≤1.5 inch	±1/64inch[0.4mm]			±3.5%
ASTM A501	>1.5inch	±1/32inch[0.79mm]			±3.5%

NPS Designator	DN Designator	Outside Diameter, Inch [mm]	Schedule No. Available	Weight Class Available	Wall Thickness Available Inch [mm]
1/8	6	0.405[10.3]	40,80	STD, XS	0.068-0.095 [1.73-2.41]
1/4	8	0.540[13.7]	40,80	STD, XS	0.088-0.119 [2.24-3.02]
3/8	10	0.675[17.1]	40,80	STD, XS	0.091-0.126 12.31-3.20]
1/2	15	0.840[21.3]	40,80,160	STD, XS, XXS	0.109-0.294 [2.77-7.47]
3/4	20	0.840[21.3]	40,80,160	STD, XS, XXS	0.083-0.308 [2.11-7.82]
1	25	1.315[33.4]	40,80,160	STD, XS, XXS	0.104.0.358 [2.64-9.09]
1¼	32	1.660[42.2]	40,80,160	STD, XS, XXS	0.109-0.382 [2.77-9.70]
1½	40	1.900[48.3]	40,80,160	STD, XS, XXS	0.109-0.400 [2.77-10.16]
2	50	2.375 [60.3]	40,80,160	STD, XS, XXS	0.109-0.436[2.77-11.07]
2½	65	2.875[73.0] 3.000[76.2]	40,80,160	STD, XS, XXS	0,083-0.552[2.11-14.02] 0.083-0.250[2.11-6.35]
3	80	3.500 [88.9]	40,80,160	STD, XS, XXS	0.083-0.600 [2.11-15.24]
3½	90	4.000 [101.6]	40,80	STD, XS	0.083-0.318 [2.11-8.08]
4	100	4.500 [114.3] 5.000[127] 5.500[139.7]	40,80,120,160	STD, XS, XXS	0.083-0.674[2.11-17.12] 0.083-0.250[2.11-6.35] 0.188-0.500[4.78-12.70]
5	125	5.563 [141.3] 6.000[152.4]	40,80,120,160	STD,XS,XXS	0.134-0.750 [3.40-19.05] 0.134.0.500[3.40-12.70]
6	150	6.625 [168.3] 7.000[177.8] 8.000[203.2]	40,80,120,160	STD, XS, XXS	0.134-0.864 [4.78-21.95] 0.188-0.500 [4.78-12.70] 0.141-0.172[3.58-4.37]
8	200	8.625 [219.1] 9.625[244.5] 10.000[254]	20,30,10,60,80, 100,120,140,160	STD, XS, XXS	0.109.0.906 [2.77-23.01] 0.188-0.500 [4.78-12.70] 0.109-0.250[2.77-6.35]
10	250	10.750[273.0] 12.000[304.8]	20,30,40,60,80, 100,120,140,160	STD, XS, XXS	0.109-1.125 [2.77-28.57] 0.134-0.312 [3.4-7.92]
12	300	12.750[323.8]	20,30,40,60,80, 100,120,140,160	STD, XS, XXS	0.134-2.500[3.4-63.50]
14	350	14.000 [355.6]	10,20,30,40,60,80, 100,120,140,160	STD, XS, XXS	0.134-1.594[3.40-40.49]
16	400	16.000[406.4]	10,20,30,40,60,80, 100,120,140,160	STD, XS, XXS	0.141.1.781[3.58-45.24]
18	450	18.000 [457]	10,20,30,40,60,80, 100,120,140,160	STD, XS, XXS	0.141.1.781[3.58-45.24]
20	500	20.000 [508] 22.000[558.8]	10,20,30,40,60,80, 100,120,140,160	STD, XS, XXS	0.141-1.969[3.58-50-01] 0.172-0.500 [4.37-12.70]
24	600	24.000[610]	10,20,30,40,60,80, 100,120,140,160	STD, XS, XXS	0.172-2.344[4.37-59.54]
26	650	26.000 [660]	10,20	STD, XS	0.250-0.562 [6.35-14.27]