ASTM A178 Electric-Resistance-Welded Boiler And Superheater Steel Tube
Boiler And Superheater
weldable steel pipe
welding round tubing
ASTM A178 Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler and Superheater Steel Tube
Application:boiler tubes,boiler flues,superheater flues and safe ends.
Grade:Type A,C and D
Manufacture :electric-resistance welding.
Heat Treatment:After welding,all tubes shall be heat treated at a temperature of 1650°F[900℃]or higher and followed by cooling in air or in the cooling chamber of a controlled-atmosphere furnace.Cold-drawn tubes shall be heat treated after the final cold-draw pass at a temperature of 1200°F[650℃] or higher.
TABLE 1 Allowable deviation of outer diameter and wall thickness
Nominal outside diameter D
Allowable deviation of outer diameter
Permissible deviation of wall thickness
TABLE 2 Mechanical Property
Lower yield strength
Not less than
Note : Tensile test arbitration time is based on longitudinal sample.
Surface Quality:The internal and external surfaces of the steel tube are not allowed to have cracks, scabs, folds, delaminations, laps, and burns. Allows for scribes, scratches, misalignment of welds, burns, oxide scales, and external burr removal traces that are not more than a negative wall thickness deviation
Eddy current flaw detection
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.