Grade A C D Electric Resistance Welded Steel Pipe Steel Boiler Superheater Tubes
Product Details
weldable steel pipe
,welding round tubing
SA-178/SA-178M Grade A C D electric-resistance-welded steel pipe , steel boiler and superheater tubes
SPECIFICATION FOR ELECTRIC-RESISTANCEWELDED
CARBON STEEL AND CARBON-MANGANESE
STEEL BOILER AND SUPERHEATER TUBES
1. Scope
1.1 This specification covers minimum-wall-thickness,electric-resistance-welded tubes made of carbon steel and
carbon-manganese steel intended for use as boiler tubes,boiler flues, superheater flues, and safe ends.
NOTE 1 — Type C and D tubes are not suitable for safe-ending for forge welding.
1.2 The tubing sizes and thicknesses usually furnished to this specification are 1⁄2 to 5 in. [12.7 to 127 mm] in
outside diameter and 0.035 to 0.320 in. [0.9 to 9.1 mm], inclusive, in minimum wall thickness. Tubing having other
dimensions may be furnished, provided such tubes comply with all other requirements of this specification.
1.3 Mechanical property requirements do not apply to tubing smaller than 1⁄8 in. [3.2 mm] in inside diameter or
0.015 in. [0.4 mm] in thickness.
1.4 When these products are to be used in applications conforming to ISO Recommendations for Boiler Construction,
the requirements of Specification A 520 shall supplement and supersede the requirements of this specification.
1.5 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the
text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each
system must be used independently of the other. Combining values from the two systems may result in nonconformance
with the specification. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order
2. Referenced Documents
2.1 ASTM Standards:
A 226/A 226M Specification for Electric-Resistance- Welded Carbon Steel Boiler and Superheater Tubes for High-Pressure Service
A 450/A 450M Specification for General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes
A 520 Specification for Supplementary Requirements for Seamless and Electric-Resistance-Welded Carbon Steel
Tubular Products for High-Temperature Service Conforming to ISO Recommendations for Boiler Construction.
E 213 Practice for Ultrasonic Examination of Metal Pipe and Tubing
E 273 Practice for Ultrasonic Examination of Longitudinal Welded Pipe and Tubing
8. General Requirements
8.1 Material furnished under this specification shall conform to the applicable requirements of the current edition
of Specification A 450/A 450M unless otherwise provided herein.
9. Tensile Requirements
9.1 Grade C and D tubes shall conform to the requirements as to tensile properties prescribed in Table 2.
NOTE 3: Explanatory Note — For purposes of design the following
tensile properties may be assumed for Grade A tubes:
Tensile strength, min, ksi [MPa] 47 [325]
Yield Strength, min, ksi [MPa] 26 [180]
Elongation in 2 in. or 50 mm, min, % 35
| TABLE 1 | |||
| CHEMICAL REQUIREMENTS | |||
| Element | Grade A | Grade C, | Grade D, |
| Low-Carbon | Medium- | Carbon-Manganese | |
| Steel | Carbon Steel | Steel | |
| Carbon | 0.06-0.18 | 0.35max | 0.27 max |
| Manganese | 0.27-0.63 | 0.80 max | 1.00-1.50 |
| Phosphorus,max | 0.035 | 0.035 | 0.030 |
| Sulfur,max | 0.035 | 0.035 | 0.015 |
| Silicon | … | … | 0.10 min |
| TENSILE REQUIREMENTS | ||||
| Grade C | Grade D | |||
| Tensile strength,min,ksi(Mpa) | 60(415) | 70(485) | ||
| Yield strength,min,ksi(Pma) | 37(255) | 40(275) | ||
| Elongation in 2 in.or 50 mm,min,% | 30 | 30 | ||
| For longitudinal strip tests a deduction | 1.50A | 1.50A | ||
| for each 1/32 in.(0.8mm)decrease in wall | ||||
| thickness below 5/16 in.(8 mm)from the | ||||
| basic minimum elongation of the following | ||||
| percentage points shall be made | ||||
| MINIMUM ELONGATION VALUES | |||
| Wall Thickness | Elongation in 2 in.or 50 | ||
| in. | mm | mm,min,%A | |
| 5/16(0.312) | 8 | 30 | |
| 9/32(0.281) | 7.2 | 29 | |
| 1/4(0.250) | 6.4 | 27 | |
| 7/32(0.219) | 5.6 | 26 | |
| 3/16(0.188) | 4.8 | 24 | |
| 5/32(0.156) | 4 | 22 | |
| 1/8(0.125) | 3.2 | 21 | |
| 3/32(0.094) | 2.4 | 20 | |
| 1/16(0.062) | 1.6 | 18 | |
FAQ:
1. Can you provide a sample to check the quality?
We can provide free sample with same or similar sizes for you to check tube quality.
You need to in charge of Express costs.
2. How about your production capacity?
3000 tons/Month.
3. What are your terms of payment?
30%TT in advance, Balance to be paid before shipment.
4. Where is your factory?
Jiaxing city, 2 hours away from Shanghai.
5. How can I get the quotation A.S.A.P?
Please send us an inquiry with full details as following,quotation will sent to you A.S.A.P:
1). Tube Standard
2). Steel Grade
3). Tube Size and Size Tolerance
4). Tube length
5). Quantity
6). If any special requirements
6. How about the minimum order quantity?
Normally for one size above 1 ton.
Welcome to contact us! Thanks.
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