ASTM A519 Seamless Mechanical Steel Tubing

ASTM A519 covers several grades of carbon and alloy steel seamless mechanical tubing,either hot-finished or cold-finished.

standard:ASTM

Surface :1. Galvanized 2. Black and Color Painting

introduction

ASTM A519 specified several grades of carbon and alloy steel mechanical tubing, either hot-finished or cold-finished.
A519 Alloy grade provided by GNEE: ASTM A519 4130,4135,4145/4145H, 4330V, 4340

ASTM A519 Seamless Mechanical Steel Tubing Hot Processing
Thermal processing mainly involves heating A519 steel pipes to a certain temperature and then performing forging, rolling or other deformation processes to change its shape, size and properties.
In the manufacturing process of ASTM A519 seamless steel pipe, thermal processing can ensure the uniform structure of the steel pipe, refine the grains, and improve the strength and toughness of the steel pipe.
ASTM A519 Carbon Steel Seamless Pipe is a low carbon steel pipe with a carbon content of 0.18-0.23% and a manganese content of 0.30-0.60%. These pipes are also known as mild steel pipes and tubes.

A519 carbon pipe Standard Specification
GNEE mainly produces ASTM A519 seamless carbon steel pipes and alloy steel pipes
HR: O.D: 51-508mm; W.T: 7∼60mm; L: max 16000mm
CD: O.D: 501-273mm; W.T: 2∼10mm; L: max 16000mm

Data table

Outside Diameter Tolerances for ASTM A519 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 ASTM A519 Round 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)	Wall Thickness Tolerance, A percent Over and Under Norminal
Under 15	12.5	10	10
15 and over	10	7.5	10

company advantage

GNEE has an annual output of 10 million tons, of which 100,000 tons of A519 steel pipes are exported annually. It is the largest domestic manufacturer of carbon steel pipes, rectangular pipes, hollow pipes, galvanized pipes and spiral welded pipes. Annual sales reach US$1 billion. It has 15 black straight seam welded pipe production lines, 10 galvanized pipe production lines, 3 spiral welded pipe production lines, and 1 JCOE LSAW steel pipe production line.

FAQ

Do you have MOQ?
Depends on different ideas, Can be negotiated.The larger the quantity is, the competitive the unit price will be.
Can your products be customized?
Yes, we can produce and process according to your requirements.
Do you have quality control?
Yes, we have got BV.SGS certification.