AS/NZS 1074

The tubes shall be manufactured from steel which has a sulfur content of not more than 0.045 percent and phosphorus content of not more than 0.045 percent. The carbon equivalent, as calculated from the following equation, shall not exceed 0.4: Carbon Equivalent = C + Mn/6

Elements of AS/NZS 1074 Pipes	Max %
S	0.05%
P	0.045
CE	0.40%

Size		Class	O.D. (mm)		W.T. (mm)	Weight (Plain End) (kg/mtr.)	Weight (Socketed) (kg/mtr.)	Pcs/Bundle
DN	Inch		Min	Max
15	1⁄2″	L	21	21.4	2.00	0.947	0.956	217
20	3⁄4″	L	26.4	26.9	2.30	1.380	1.390	127
25	1″	L	33.2	33.8	2.60	1.980	2.000	91
32	11⁄4″	L	41.9	42.5	2.60	2.540	2.570	61
40	11⁄2″	L	47.8	48.4	2.90	3.230	3.270	61
50	2″	L	59.6	60.2	2.90	4.080	4.150	37
65	21⁄2″	L	75.2	76	3.20	5.710	5.830	37
80	3″	L	87.9	88.7	3.20	6.720	6.890	19
100	4″	L	113	113.9	3.60	9.750	10.000	19
15	1⁄2″	M	21.1	21.7	2.60	1.210	1.220	217
20	3⁄4″	M	26.6	27.2	2.60	1.560	1.570	127
25	1″	M	33.4	34.2	3.20	2.410	2.430	91
32	11⁄4″	M	42.1	42.9	3.20	3.100	3.130	61
40	11⁄2″	M	48	48.8	3.20	3.570	3.610	61
50	2″	M	59.8	60.8	3.60	5.030	5.100	37
65	21⁄2″	M	75.4	76.6	3.60	6.430	6.550	37
80	3″	M	88.1	89.5	4.00	8.370	8.540	19
100	4″	M	113.3	114.9	4.50	12.200	12.500	19
125	5″	M	138.7	140.6	5.00	16.600	17.100	13
150	6″	M	164.1	166.1	5.00	19.700	20.300	10
15	1⁄2″	H	21.1	21.7	3.20	1.440	1.450	217
20	3⁄4″	H	26.6	27.2	3.20	1.870	1.880	127
25	1″	H	33.4	34.2	4.00	2.940	2.960	91
32	11⁄4″	H	42.1	42.9	4.00	3.800	3.830	61
40	11⁄2″	H	48	48.8	4.00	4.380	4.420	61
50	2″	H	59.8	60.8	4.50	6.190	6.260	37
65	21⁄2″	H	75.4	76.6	4.50	7.930	8.050	37
80	3″	H	88.1	89.5	5.00	10.300	10.500	19
100	4″	H	113.3	114.9	5.40	14.500	14.800	19
125	5″	H	138.7	140.6	5.40	17.900	18.400	13
150	5″	H	164.1	166.1	5.40	21.300	21.900	10

AS 1074 Manufacturing Parameter	Tolerances
Outer Diameter	See the Dimension Table Above
Wall Thickness	-8%, +unlimited (Light)
	-10%, +unlimited (Medium and Heavy)
Straightness	0.20% of Total Length
Mass	± 4%
Unit Length	± 0.08m

Before leaving the manufacturer, tubes shall be distinguished by color at one end as per following table:

Thickness Identification
Extra Light	Green
Light	Yellow
Medium	Blue
Heavy	Red

In order to ensure the Screw threads of all threaded tubes comply with AS 1722.1, it is essential that the fitting allowance plus gauge length for pipe threads of series R and RC for the particular nominal size, does not exceed 80% of the sum of the Light tube’s basic length of useful thread. In some cases, low limits of outside diameter can result in “black” threads (perfect at the root and imperfect at the crest), but these should not be regarded as justification for rejection of the tubes. All tubes shall be supplied threaded with taper pipe threads.

– Leak Tightness Test

• Online NDT
• Hydro-test

– Bending Test

Tubes are an essential part of many industrial applications, and it is important that they be able to withstand certain loads and stresses. One such test is the bending test, which determines a tube’s ability to resist fracture or failure under duress.

• Tubes ≤ DN50 – The test is carried out by placing the tube in a bending machine, with the weld at a 90 degree angle to the plane of bending. The tube is then bent cold around a former with a radius that is appropriate for the particular tube being tested. For ungalvanized tubes, this radius should be equal to 6 times the outside diameter of the tube; for galvanized tubes, it should be 8 times the outside diameter of the tube. If the tube does not crack or show any signs of failure during this process, it is considered to have passed the test.

• Tubes ＞ DN50 – According to the given specifications, for finished tubes that are larger than DN50 in diameter, rings cut from the end of the selected tubes must be at least 40mm in length and be able to be flattened between two parallel plates. The weld, if there is one, should be at a 90 degree angle in relation to the point of maximum bending. Additionally, no opening or fracture should occur in the weld until the distance between the plates is less than 75% of the original outside diameter of the tube. There should also be no cracks or breaks in the metal occurring elsewhere until the distance between the plates is less than 60% of the original outside diameter of the tube. As appropriate, test rings may have their inner and outer edges rounded.