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»ASTM Specification & Tolerance For Tubing & Piping

Specification	Allowable Outside Diameter Variation in mm			Allowable Wall Thickness Variation		Exact Length Tolerance in mm		Testing
Specification	Nominal Diameter	Over	Under	Over (%)	Under (%)	Over	Under	Testing
ASTM-A213	Under 25.4	0.1016	0.1016	20	0	3.175	0	Flattening Test
Seamless Boiler Superheater	25.4-38.1 incl	0.1524	0.1524	22	0	3.175	0	Tension Test
and Heat Exchanger Tubes	38.1-50.8 excl	0.2032	0.2032	22	0	3.176	0	Flare Test
	50.8-63.5 excl	0.254	0.254	2	0	4.46	0	Hardness Test
	63.5-76.2 excl	0.3048	0.3048	22	0	4.76	0	100% Hydrostatic test
	76.2-101.6 incl	0.381	0.381	22	0	4.76	0	Refer to ASTM A-450
ASTM-A249	Under 25.4	0.1016	0.1016	10	-10	3.175	0	Tension Test
Welded Boiler Superheater, Heat	25.4-38.1 incl	0.1524	0.1524	10	-10	3.175	0	Flattening Test
Exchanger And Condenser Tubes	38.1-50.8 Excl	0.2032	0.2032	10	-10	3.175	0	Flange Test
	50.0-63.5 excl	0.254	0.254	10	-10	4.762	0	Reverse Bend Test
	63.5-76.2 excl	0.3848	0.3848	10	-10	4.762	0	Hardness Test
	76.2-101.6 incl	0.381	0.381	10	-10	4.762	0	100% Hydrostastic Test Refer to ASTM A-450
				Minimum Wall tubes +18% 0 available On request				100% Hydrostastic Test Refer to ASTM A-450
ASTM-A269	Under12.7	0.13	0.13	15	-15	3.2	0	Flare Test (Seamless Only)
Seamless & Welded Tubing for	12.7-38.1 exc!	0.13	0.13	10	-10	3.2	0	Flange Test (Welded Only)
General Service	38.1-88.9 excl	0.25	0.25	10	-10	4.8	0	Hardness Test
	88.9-139.7 excl	0.38	0.38	10	-10	4.8	0	Reverse Flattening Test
	139.7-203.2 excl	0.76	0.76	10	-10	4.8	0	(Welded only) 100% Hydrostatic
	139.7-203.2 excl	0.76	0.76	10	-10	4.8	0	Test Refer to ASTM-A269
ASTM-A270	25.4	0.05	0.2	10	-10	3.2	0	Reverse flattening Test
Seamless & Welded Sanitary Tubing	38.1	0.05	0.2	10	-10	3.2	0	100% Hydrostastic Test
	50.8	0.05	0.28	10	-10	3.2	0	External' polish on all tubes
	60.5	0.05	0.28	10	-10	3.2	0	Refer to ASTM A-270
	76.2	0.08	0.3	10	-10	3.2	0
	101.6	0.08	0.38	10	-10	3.2	0
ASTM-A312	3.175-38.1 incl	0.4	0.8	Minimum Wall 12.5% under nominal wall Specified		6.4 0	0	Tension Test
Seemless & Welded pipe	38.1-1016 incl	0.8	0.8			6.4 0	0	Flattening Test
	101.6-203.2 incl	1.6	0.8			6.4 0	0	100% Hydrostatic Test
						(Normally Random Lengths ordered		Refer to ASTM A-530
ASTM A-358	219.08-750mm or 0.01 inch	0.50%		-0.3		6		Refer to ASTM A-530
Welded pipe	219.08-750mm or 0.01 inch	0.50%		-0.3		6		Refer to ASTM A-530

SPECIFICATION & TOLERANCE FOR TUBE & PIPE