
ASTM A519 Alloy Tube
This specification covers for several grades of carbon and alloy steel mechanical tubing, either hot-finished or cold-finished.
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ASTM A519 Steel Tube Supplier-GNEE
ASTM A519 Steel Tube Description
ASTM A519 specification covers seamless hot-finished mechanical pipe and seamless cold-finished mechanical pipe.
This specification covers multiple grades of carbon and alloy steel seamless mechanical tubing. Steel can be made by any process. Steel can be cast into ingots or flow cast. When different grades of steel are continuously cast, the resulting transition material needs to be characterized. GNEE removes transitional materials through established procedures to effectively differentiate between grades. Heat treatment is performed separately from thermoforming.
According to regulations, pipes should be made into the following shapes: round, square, rectangular and special cross-sections.
Alloy grade: ASTM A519 4130,4135,4145/4145H, 4330V, 4340
HR: O.D: 51-508mm; W.T: 7∼60mm; L: max 16000mm
CD: O.D: 501-273mm; W.T: 2∼10mm; L: max 16000mm
Outside Diameter Tolerances for Round Hot-Finished Tubing
|
Outside Diameter Size Range. |
Outside Diameter |
Tolerance, in. (mm) |
|
in (mm) |
Over |
Under |
|
Up to 2.999 (76.17) |
0.020 (0.51) |
0.020 (0.51) |
|
3.000 - 4.499 (76.20 - 114.27) |
0.025 (0.64) |
0.025 (0.64) |
|
4.500 - 5.999 (114.30 - 152.37) |
0.031 (0.79) |
0.031 (0.79) |
|
6.000 - 7.499 (152.40 - 190.47) |
0.037 (0.94) |
0.037 (0.94) |
|
7.500 - 8.999 (190.50 - 228.57) |
0.045 (1.14) |
0.045 (1.14) |
|
9.000 - 10.750 (228.60 - 273.05) |
0.050 (1.27) |
0.050 (1.27) |
Wall Thickness Tolerances for Round Hot-Finished Tubing
|
Wall Thickness Range as Percent of Outside Diameter |
Wall Thickness Tolerance, A percent Over and Under Norminal | ||
|
Outside Diameter 2.999 in. (76.19 mm)and smaller |
Outside Diameter 3.000 in. (76.20 mm) to 5.999 in. (152.37 mm) |
Outside Diameter 6.000 in. (152.40 mm) to 10.750 in. (273.05 mm) |
|
|
Under 15 |
12.5 |
10 |
10 |
|
15 and over |
10 |
7.5 |
10 |
ASTM A519 Steel Tube

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About Us
GNEE Group is located in Anyang City, Henan Province and is a professional steel pipe supplier. GNEE Group was established in 2008 and has 15 years of steel pipe export experience, with an annual export volume of 50 million tons of steel pipes. Years of experience have made GNEE Group more professional and become the first choice of customers. GNEE provides customers with various types of steel pipe products, and can also use different processes to treat the surface of steel pipes according to customer requirements. The products we provide include A213 alloy steel pipe, A333 low temperature carbon steel pipe, A335 high temperature alloy steel pipe, A106 seamless carbon steel pipe, API 5L line pipe, etc. You are welcome to consult at any time.

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