FLATNESS				STRAIGHTNESS		TOLERANCES FOR SIZES
	a	b					WALL THICKNESS			SIZE
	0 - 50	0.15					0 - 3 mm		± 0.15	0 - 10 mm
	50 - 80	0.2					3 - 6 mm		± 0.20	10 - 15 mm
	80 - 120	0.3			L	h1	6 - 10 mm		± 0.225	15 - 30 mm
	120 - 150	0.35			(m)	(mm)	10 - 15mm		± 0.25	30 - 50 mm
	150 - 200	0.5			0 - 1	0.7	15 - 20 mm		± 0.275	50 - 80 mm
	200 - 220	0.6			1 - 2	1.3	20 - 30 mm		± 0.3	80 - 100 mm
					2 - 3	1.8	30 - 40 mm		± 0.35	100 - 120 mm
					3 - 4	2.2				120 - 150 mm
					4 - 5	2.6				150 - 180 mm
					5 - 6	3				180 - 220 mm
							MAXIMUM TORSION
	ANGLE MAXIMUM DEGREE 0.5
	a	e
	10	0.09
	20	0.17					L	Sur 1m x	Sur 6m x	L	Sur 1m x	Sur 6m x
	30	0.26					10	0.3	0.5	30	0.3	0.6
	40	0.35					20	0.6	1	40	0.4	0.8
	50	0.44					30	0.9	1.5	50	0.5	1
	60	0.52					40	1.2	2	60	0.6	1.2
	70	0.61					50	1.5	2.5	70	0.7	1.4
	80	0.7								80	0.8	1.6
	90	0.79					CIRCUMSCRIBE CIRCLE			90	0.9	1.8
	100	0.87								100	1	2
	110	0.96					L	Sur 1m x	Sur 6m x	110	1.1	2.2
	120	1.05					20	0.4		120	1.2	2.4
	130	1.13					30	0.6		130	1.3	2.6
	140	1.22					40	0.8		140	1.4	2.8
	150	1.31					50	1		150	1.5	3
	160	1.4					60	1.2	1.8	160	1.6	3.2
	170	1.49					70	1.4	2.1	170	1.7	3.4
	180	1.57					80	1.6	2.4	180	1.8	3.6
	190	1.66					90	1.8	2.7	190	1.9	3.8
	200	1.75					100	2	3	200	2	4