Standard: ASTM A106/A106M
This specification covers carbon steel pipe for high-temperature service.
Application of ASTM 106 Carbon Seamless Steel Pipe:
Pipe ordered under this specification shall be suitable for bending, flanging, and similar forming operations, and for welding. When the steel is to be welded, it is presupposed that a welding procedure suitable to the grade of steel and intended use or service will be utilized.
Manufacturing Process of ASTM A106 Seamless Steel Pipe:
ASTM A106 seamless steel pipe are produced either by cold-drawn or hot rolled, as specified.
Hot finished pipe need not heat treated. When hot finished pipe is heat treated, it shall be heat treated at a temperature of 1200°F or higher. Cold drawn pipe shall be heat treated after final cold draw pass at a temperature of 1200°F or higher.
Details of ASTM A106 Seamless Steel Pipe We can supply:
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: Gr.A ,Gr.B, Gr.C.
Length: 6M or specified length as required.
Ends: Plain End, Beveled End, Threaded
Chemical Composition of ASTM A106 Seamless Steel Pipe
Grade and Chemical Composition (％)
Mechanical Properties of ASTM A106 Seamless Steel Pipe
|Grade||Rm Mpa Tensile Strength||Mp Yield Point||A％ Elongation||Delivery Condition|
Dimension tolerance of ASTM A106 Seamless Steel Pipe
|Pipe Type||Pipe Sizes||Tolerances|
a. Quantity ( feet, meters, or number of lengths)
b. Name of material(seamless carbon steel pipe)
d. Manufacture (hot rolled or cold drawn)
e. Size (outside or inside diameter, normal wall thickness)
f. Special outside diameter tolerance pipe
g. Inside diameter tolerance pipe, over 10 inch.
h. Length (specific or random)
i. Optional requirement.
j. NDT reports, e.g
Permissible Variations in Weight and Dimensions
Mass- the mass of any length of pipe shall not vary more than 10% over and 3.5% under that specified. unless purchaser accept.
Diameter: Over 10" pipe as special O.D tolerance pipe, the O.D shall not vary more than 1% over or 1% under the specified outside diameter.
Thickness-The minimum wall thickness at any point shall be not more than 12.5% under the specified wall thickness.
Mechanical and NDT Tests for ASTM A106 Black Seamless Steel Pipe
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
Appearance for ASTM A106 Black Seamless Steel Pipe
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.
Marking for ASTM A106 Black Seamless Steel Pipe
a. Manufacturer's name or mark
b. Specification number(year-date or required)
c. Size( OD, W.T, length)
d. Grade( A or B)
e. Type of pipe( F, E, or S)
f. Test pressure( seamless steel pipe only)
g. Heat Number
h. Any additional information specified in the purchase order.
Packing for ASTM A106 Black Seamless Steel Pipe:
a. Bare pipe or Black / Varnish coating ( customized);
b.6" and below in bundles with two cotton slings;
c. Both ends with end protectors;
d. Plain end, bevel end(2" and above with bevel ends, degree: 30~35°), threaded and coupling;