AS1074

JIS-G3452-SGP-AS-1074

AS1074

The AS 1074 standard is an Australia and New Zealand standard that sets out the requirements for steel pipes to be used in ordinary service. This joint standard covers both threaded and plain end pipes suitable for screwing as specified in AS 1722.1, and of DN 8 to DN 150 inclusive (nominal size). Wall thicknesses are designated as Light (lightest), Medium (medium), and Heavy (heaviest). The requirements for steel pipes include mechanical properties, dimensional tolerances, and strength classifications. In addition, the standard requires that steel pipes be properly marked with the manufacturer’s name or trademark. The AS/NZS 1074 pipe standard is an important part of ensuring that steel pipes used in ordinary applications meet the necessary safety and quality requirements. By adhering to this standard, manufacturers can ensure that their products are safe and fit for purpose. This in turn helps to protect consumers and ensure that they can have confidence in the products they purchase. Ultimately, the AS/NZS 1074 pipe standard helps to create a level playing field for all manufacturers of steel pipes. This ensures that everyone is held to the same high standards and that only products of the highest quality are made available to consumers.

Why choose tuspipe?

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Since 1998, Tianjin United Steel Pipe Co., Ltd (TUSPIPE) has been committed to supplying high-quality line pipes.

With over 500,000 tons annual production capacity, the company serves various fields and industries, such as oil & gas exploitation and transmission, ship & auto-building, water & electricity, environmental protection, mechanical engineering, infrastructure construction and etc.

TUSPIPE places a premium on product quality and rigorous product quality control. In order to maintain good product quality,  the company has established a Test & Inspection Center since 2004. With a series of state-of-the-art tests and inspection equipment, the test & inspection center is able to perform the tensile tests, hydro tests, impact tests, DWTT, etc.

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Dimensions and Sizes of AS 1074 Pipe

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

Chemical Composition of AS 1074 Steel Pipe

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 0.045%
P 0.045%
CE 0.400%

Mechanical Properties of AS 1074 Pipes

AS/NZS 1074 Mechanical Properties Minimum Requirement
Yield Strength (MPa) 195
Tensile Strength (MPa) 320
Elongation (%) 20

Manufacturing Tolerances of AS 1074

AS/NZS 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

Thickness Identification of AS 1074

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

Screw Threads of AS 1074

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.

Test and Inspections of AS 1074

– 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.
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