ASTM A213 Steel Pipe
| Item | ASTM A213 T12 Alloy steel pipe/tube | |
| Standard | ASTM A213, JIS G3462, JIS G3458, DIN17175, GB9948,GB 6479, etc. | |
| Material | T12, STBA22, 15CrMo. | |
| Specifications | Wall thickness | 1mm~120mm |
| Outside diameter | 6mm~2500mm | |
| Length | 5.8m, 6m, 11.8m, 12m, or as required. | |
| Surface | Black painted, PE coated. | |
| Chemical composition | C:0.05~0.15, Si ≤ 0.5, Mn:0.30~0.61, P≤0.025, S≤0.025, Mo:0.44~0.65, Cr:0.80-1.25 | |
| Price Term | Ex-work, FOB, CIF, CFR, etc. | |
| Payment Term | TT, LC , OA , D/P | |
| Export to | Singapore, Canada, Indonesia, Korea, USA, UK, Thailand, Peru, Saudi Arabia, Viet Nam, Iran, India, Ukraine, Brazil, South Africa, etc. | |
| Delivery Time | Delivery Time: Within 30 days and Depends on your order quantity. | |
| Package | Export standard package; bundled wooden box, suit for all kinds of transport, or be required | |
| Application | 1) boiler, heat exchanger;2) Petroleum;3) Aerospace;4) chemical;5) electric power;6) Military. | |
ASTM A213 Alloy Steel Chemical Composition(%, max)
|
Steel Grade |
Chemical Composition% |
||||||||||||
|
C |
Si |
Mn |
P, S Max |
Cr |
Mo |
Ni Max |
V |
Al Max |
W |
B |
Nb |
N |
|
|
T2 |
0.10~0.20 |
0.10~0.30 |
0.30~0.61 |
0.025 |
0.50~0.81 |
0.44~0.65 |
– |
– |
– |
– |
– |
– |
– |
|
T11 |
0.05~0.15 |
0.50~1.00 |
0.30~0.60 |
0.025 |
1.00~1.50 |
0.44~0.65 |
– |
– |
– |
– |
– |
– |
– |
|
T12 |
0.05~0.15 |
Max 0.5 |
0.30~0.61 |
0.025 |
0.80~1.25 |
0.44~0.65 |
– |
– |
– |
– |
– |
– |
– |
|
T22 |
0.05~0.15 |
Max 0.5 |
0.30~0.60 |
0.025 |
1.90~2.60 |
0.87~1.13 |
– |
– |
– |
– |
– |
– |
– |
|
T91 |
0.07~0.14 |
0.20~0.50 |
0.30~0.60 |
0.02 |
8.0~9.5 |
0.85~1.05 |
0.4 |
0.18~0.25 |
0.015 |
– |
– |
0.06~0.10 |
0.03~0.07 |
|
T92 |
0.07~0.13 |
Max 0.5 |
0.30~0.60 |
0.02 |
8.5~9.5 |
0.30~0.60 |
0.4 |
0.15~0.25 |
0.015 |
1.50~2.00 |
0.001~0.006 |
0.04~0.09 |
0.03~0.07 |
ASTM A213 Alloy Steel Mechanical properties:
|
Steel Grade |
Mechanical Properties |
|||
|
T. S |
Y. P |
Elongation |
Hardness |
|
|
T2 |
≥ 415MPa |
≥ 205MPa |
≥ 30% |
163HBW(85HRB) |
|
T11 |
≥ 415MPa |
≥ 205MPa |
≥ 30% |
163HBW(85HRB) |
|
T12 |
≥ 415MPa |
≥ 220MPa |
≥ 30% |
163HBW(85HRB) |
|
T22 |
≥ 415MPa |
≥ 205MPa |
≥ 30% |
163HBW(85HRB) |
|
T91 |
≥ 585MPa |
≥ 415MPa |
≥ 20% |
250HBW(25HRB) |
|
T92 |
≥ 620MPa |
≥ 440MPa |
≥ 20% |
250HBW(25HRB) |
ASTM A213 Steel Tubes Outside Diameter and Wall Thickness Tolerance
|
OD, mm |
OD Tolerance |
|
< 25.4 |
+/- 0.10 |
|
25.4 – <= 38.1 |
+/- 0.15 |
|
> 38.1 -< 50.8 |
+/- 0.20 |
|
50.8 -< 63.5 |
+/- 0.25 |
|
63.5 -< 76.2 |
+/- 0.30 |
|
76.2 – <= 101.6 |
+/- 0.38 |
|
> 101.6 – <= 190.5 |
+0.38/-0.64 |
|
> 190.5 – <= 228.6 |
+0.38/-1.14 |
|
OD, mm |
WT Tolerance |
|
<= 38.1 |
+20%/-0 |
|
> 38.1 |
+22%/-0 |
ASTM A213 Standard Scope
1.1 This specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes, designated Grades T91, TP304, etc. These steels are listed in Tables 1 and 2.
1.2 Grades containing the letter, H, in their designation, have requirements different from those of similar grades not containing the letter, H. These different requirements provide higher creep-rupture strength than normally achievable in similar grades without these different requirements.
1.3 The tubing sizes and thicknesses usually furnished to this specification are 1/8 in. [3.2 mm] in inside diameter to 5 in. [127 mm] in outside diameter and 0.015 to 0.500 in. [0.4 to 12.7 mm], inclusive, in minimum wall thickness or, if specified in the order, average wall thickness. Tubing having other diameters may be furnished, provided such tubes comply with all other requirements of this specification.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.
TABLE 1 Chemical Composition Limits, %A, for Low Alloy SteelA Maximum, unless range or minimum is indicated. Where ellipses (…) appear in this table, there is no requirement, and analysis for the element need not be determined or reported.
B It is permissible to order T2 and T12 with a sulfur content of 0.045 max. .
C Alternatively, in lieu of this ratio minimum, the material shall have a minimum hardness of 275 HV in the hardened condition, defined as after austenitizing and cooling to room temperature but prior to tempering. Hardness testing shall be performed at mid-thickness of the product. Hardness test frequency shall be two samples of product per heat treatment lot and the hardness testing results shall be reported on the material test report
Surface Black painted, PE coated
Before Painting
Preparation of painting specification involves understanding environmental factors, location of piping (indoor or outdoor), insulation requirements, operating and design temperatures. It may also involve local rules and regulations as well as availability of materials.
Painting Workflow
- Ensure all tests are performed on piping system before starting painting work.
- Clean painting surface to remove oils, grease, dirt.
- Ensure proper room temperature and humidity levels.
- Use hand tools, machine tools, shot blasters etc to clean surface as per relevant standards and project requirements.
- Apply primer within 4 hours of surface preparation.
- Apply paint coats after previous coats have dried up, as per instructions of paint manufacturer.
Components Requiring Painting
• Carbon steel ducts, furnaces and stacks require painting.
• All un-insulated equipments like columns, vessels, drums, heat exchangers, pumps, compressors, electrical panels, motors etc. require painting.
• All structural componets like steel members, platforms, ladders,handrails etc. required painting.
Types of Painting Methods
• Painting by Brush
• Painting by Air Spray Painting Machine
• Painting by Airless Spray Painting Machine
Surfaces that should not be painted.
Non-ferrous materials like Aluminium are not required to be painted. Also other surfaces like Valve Stems etc. Checkout this complete list of surfaces that should not be painted.
Characteristics of Piping Paint Material
Paint material used for painting pipes and equipments must adhere to certain requirements as per project specification .Check out these typical requirements for various types of primers and paints.
Typical Piping Painting Systems
Check out these combinations of typical piping painting systems which comprise of surface preparation, primer coats and top coats.
Humidity Requirements During Painting
Proper weather conditions surrounding the place of painting work is essential w.r.t. humidity levels and room temperature. Check out these humidity and temperature requirements.
Qualification Criteria for Painting Contractor
Painting contractor needs to posses these qualifications for good quality of painting work in time.
Inspection and Testing Procedure
Sound inspection and testing procedure must be in place to ensure good quality of painting work. Check out this article for complete information on inspection and testing procedure.
