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To be the stage of realizing dreams of our employees! To build a happier, extra united and extra professional team! To reach a mutual reward of our shoppers, suppliers, the society and ourselves for China Steel Pipe and Welded Steel Tube, We have now more than 100 works in the plant, and we also have a 15 guys work team to service our customers for before and after sales. Good quality is the key factor for the company to stand out from other competitors. Seeing is Believing, want more information? Just trial on its products and solutions!
ASTM A53 Gr.A &Gr.B seamless steel pipe is for mechanical and pressure applications and is also acceptable for ordinary uses in steam, water, gas, and air lines. Besides, ASTM A53 Gr.A &Gr.B seamless steel pipe can also be applied for structural use, like piles, beams, pillars, fencing etc.
ASTM A53 Gr.A &Gr.B seamless steel pipe are produced either by cold-drawn or hot rolled, as specified.
Manufacture:Seamless process ,cold drawn or hot rolled
Cold drawn: O.D.: 15.0～100mm W.T.: 2～10mm
Hot rolled : O.D.: 25~700mm W.T.: 3~50mm
Grade: Grade A and Grade B.
Length: 6M or specified length as required.
Ends: Plain End, Beveled End, Threaded
Grade and Chemical Composition (％)
|
Grade |
C |
Mn |
P≤ |
S≤ |
Cu |
Ni |
Cr |
Mo |
V |
|
Type S (Seamless pipe) |
|||||||||
|
Grade A |
0.25 |
0.95 |
0.05 |
0.045 |
0.40 |
0.40 |
0.40 |
0.15 |
0.08 |
|
Grade B |
0.3 |
1.2 |
0.05 |
0.045 |
0.40 |
0.40 |
0.40 |
0.15 |
0.08 |
Tensile Requirements：
|
|
Grade A |
Grade B |
|
Tensile strength, min, psi (MPa) |
48000 (330) |
60000 (415) |
|
Yield strength, min, psi (MPa) |
30000 (205) |
35000 (240) |
Weight –The weight of the pipes shall not vary more than ±10% from its specified weight (mass).
Diameter-For pipes NPS 11/2 OR smaller, the outside diameter at any point shall not vary more than ±1/64 in. From the specified outside diameter. For pipes NPS 2 (DN50) or larger, the outside diameter shall not vary more than ±1% from the specified outside diameter.
Thickness-The minimum wall thickness at any point shall be not more than 12.5% under the specified wall thickness.
Bending Test— a sufficient length of pipe shall stand being bent cold through 90° around a cylindrical mandrel.
Flattening test-although testing is not required, pipe shall be capable of meeting the flattening test requirements.
Hydro-static test—except as allowed, each length of pipe shall be subjected to the hydro-static test without leakage through the pipe wall.
Nondestructive electric test-as an alternative to the hydro-static test, the full body of each pipe shall be tested with a nondestructive electric test. Where nondestructive electric test is performed, the lengths shall be marked with the letters”NDE”
The ultrasonic testing.
The eddy current examination.
A sufficient number of visual surface imperfections to provide seasonable assurance is necessary. The defect shall be removed or cut off within the limits of requirements on length. The finished pipe shall be reasonably straight.
Manufacturer’s name or mark
Specification number(year-date or required)
Size( OD, W.T, length)
Grade( A or B)
Type of pipe( F, E, or S)
Test pressure( seamless steel pipe only)
Heat Number
Any additional information specified in the purchase order.
Bare pipe or Black / Varnish coating ( customized);
6″and below in bundles with two cotton slings;
Both ends with end protectors;
Plain end, bevel end(2″and above with bevel ends, degree: 30~35°), threaded and coupling;
Marking.
According to recent news, China has become a hotbed for the production and supply of seamless pipes. Grades from Gr.B to X42 to X70, A179, A192, J55, K55, P11, P91, etc. are being produced in impressive lengths with outside diameters of 10-660 mm and wall thicknesses of 1.0-100 mm. Fixed lengths such as 5.8m, 6m, and 11.8m can be provided, and customers can choose specific lengths according to their needs.
The ends of these pipes are available in plain, beveled, grooved, threaded and other options. These pipes can also be given a range of coatings such as varnish, hot dip galvanized, 3-layer PE, FBE etc.
These seamless pipes are produced through various processes such as hot rolling, cold drawing, extrusion, cold finishing, heat treatment, etc. The use of state-of-the-art technology ensures that these pipes meet the highest quality standards.
Wholesale Price China Steel Pipe and Welded Steel Tube, We have now more than 50 works in the plant, and we also have a 15 guys work team to service our customers for before and after sales. Good quality is the key factor for the company to stand out from other competitors. Seeing is Believing, want more information? Just trial on its products and solutions!
