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Pipe ordered under this specification is used for high-pressure service at atmospheric and lower temperatures.Mainly used for oil and natural gas transmission.
ASTM A671 LSAW(JCOE) Carbon Steel Pipe shall be double-welded, full-penetration welds made in accordance with procedures and by welders or welding operators qualified in accordance with the ASME Boiler and pressure Vessel Code, Section IX.
All classes other than 10, 11, 12 and 13 shall be heat treated in furnace controlled to ±15℃ and equipped with a recording hydrometer so that heating records are available.
Manufacture: LSAW(JCOE) Steel pipes
Size : O.D.: 406~1500mm W.T.: 6~40mm
Grade: CB60,CB65, CC60,CC65,etc.
Length: 12M or specified length as required.
Ends: Plain End, Beveled End,Grooved ;
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Chemical Requirements for ASTM A672 B60/B70/C60/C65/C70 LSAW Carbon Steel Pipe |
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|
Pipe |
Grade |
Composition, % |
|||||||||||
|
C max |
Mn |
P max |
S max |
Si |
Others |
||||||||
|
<=1in (25mm) |
>1~2in (25~50mm) |
>2~4in(50-100mm) |
>4~8in (100~200mm) |
>8in (200mm) |
<=1/2in (12.5mm) |
>1/2in (12.5mm) |
|||||||
|
CB |
60 |
0.24 |
0.21 |
0.29 |
0.31 |
0.31 |
0.98max |
0.035 |
0.035 |
0.13–0.45 |
… |
||
|
65 |
0.28 |
0.31 |
0.33 |
0.33 |
0.33 |
0.98max |
0.035 |
0.035 |
0.13–0.45 |
… |
|||
|
70 |
0.31 |
0.33 |
0.35 |
0.35 |
0.35 |
1.30max |
0.035 |
0.035 |
0.13–0.45 |
… |
|||
|
CC |
60 |
0.21 |
0.23 |
0.25 |
0.27 |
0.27 |
0.55–0.98 |
0.79–1.30 |
0.035 |
0.035 |
0.13–0.45 |
… |
|
|
65 |
0.24 |
0.26 |
0.28 |
0.29 |
0.29 |
0.79–1.30 |
0.79–1.30 |
0.035 |
0.035 |
0.13–0.45 |
… |
||
|
70 |
0.27 |
0.28 |
0.30 |
0.31 |
0.31 |
0.79–1.30 |
0.79–1.30 |
0.035 |
0.035 |
0.13–0.45 |
… |
||
|
Mechanical Properties |
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|
Grade |
|||||
|
|
CB65 |
CB70 |
CC60 |
CC65 |
CC70 |
|
Tensile strength, min: |
|||||
|
ksi |
65 |
70 |
60 |
65 |
70 |
|
Mpa |
450 |
485 |
415 |
450 |
485 |
|
Yield strength, min: |
|||||
|
ksi |
35 |
38 |
32 |
35 |
38 |
|
MPa |
240 |
260 |
220 |
240 |
260 |
1. Outside Diameter-Based on circumferential measurement ±0.5% of the specified outside diameter.
2. Out-of-Roundness-Difference between major and minor outside diameters.
3. Alignment-Using a 10 ft (3m) straightedge placed so that both ends are in contact with the pipe, 1/8 in. (3mm).
4. Thickness-The minimum wall thickness at any point in the pipe shall not be more than 0.01 in. (0.3mm) under the specified nominal thickness.
5. Lengths with unmachined ends shall be within -0,+1/2 in. (-0,+13mm) of that specified. Lengths with machined ends shall be as agreed upon between the manufacturer and the purchaser.
Tension Test—Transverse tensile properties of the welded joint shall meet the minimum requirements for ultimate tensile strength of the specified plate material.
Transverse-guided-weld-bent tests —The bend test shall be acceptable if no cracks or other defects exceeding 1/8 in. (3mm) in any direction are present in the weld metal or between the weld and the base metal after bending.
Radio-graphic Examination-The full length of each weld of class X1 and X2 shall be radiographically examined in accordance with and meet the requirements of the ASME Boiler and Pressure Vessel Code, Section seven, paragraph UW-51.
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.
Quantity ( feet, meters, or number of lengths)
Name of material( steel pipe, electric fusion welded)
Specification number
Grade and class designations
Size (outside or inside diameter, normal or minimum wall thickness)
Length (specific or random)
End finish
Purchase options
Supplementary requirements, if any.
Bare pipe or Black / Varnish coating/Epoxy coating/3PE coating ( according to customer’s requirements);
In loose;
Both ends with end protectors;
Plain end, bevel end(2″ and above with bevel ends, degree: 30~35°), customized;
Marking.Our rewards are lower costs,dynamic profits team,specialised QC,potent factories,high-quality services for 2019 High quality JIS G3454/G3455/G3456 Stpg410 Carbon Steel Seamless Pipe, Welcome worldwide clients to call us for company and long-term cooperation. We’ll be your trustworthy partner and supplier.
2019 High quality China Carbon Steel Pipe and Seamless Steel Pipe, In order to meet our market demands, we now have paied more attention to the quality of our solutions and services. Now we can meet customers’ special requirements for special designs. We persistently develop our enterprise spirit “quality lives the enterprise, credit assures cooperation and keep the motto in our minds: customers first.
