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ASTM A178-A ERW Electric Resistance Welded Carbon Steel Boiler Tube 50.8x4.5mm for Low Pressure Steam Boiler
ASTM A178-A ERW Electric Resistance Welded Carbon Steel Boiler Tube 50.8x4.5mm for Low Pressure Steam Boiler
Specifications
Brand Name :
WNRLN
Model Number :
A178A-ERWT
Place of Origin :
Jiangsu, China
Certification :
ISO 9001:2015, ASTM
MOQ :
5 Metric Tons
Price :
USD 600-900 / Metric Ton
Payment Terms :
T/T, L/C
Supply Ability :
3500 Metric Tons per Month
Delivery Time :
10-20 working days after order confirmation
Packaging Details :
Plastic end caps, anti-rust coating, steel-banded bundles, export pallets
Material Grade :
ASTM A178-A (ERW Carbon Steel Grade A)
Outer Diameter :
50.8mm
Wall Thickness :
4.5mm
Length :
Random 6-12m or Fixed Length
Weld Type :
Electric Resistance Welded (ERW), Full Normalized Weld
Application :
Low Pressure Steam Boiler, Economizer
Manufacturing Process :
ERW + Full Body Normalizing
Testing :
Eddy Current, Flattening, Flaring, Hydrostatic
Description

ASTM A178-A ERW Welded Carbon Steel Boiler Tube

The A178-A ERW boiler tube is a cost-effective electric resistance welded carbon steel tube manufactured to ASTM A178/A178M Grade A specifications. With full body normalizing after welding, it provides uniform mechanical properties ideal for low to medium pressure boiler applications where seamless tube economics are prohibitive.

Key Features

  • ERW with Full Normalizing: Post-weld full body normalizing eliminates HAZ hardness variation, ensuring uniform microstructure and consistent mechanical properties
  • Cost-Effective Alternative: 30-40% lower material cost compared to equivalent seamless tube grades for low-pressure applications
  • Consistent Wall Thickness: ERW process from precision-rolled strip ensures ±8% wall tolerance, superior to some seamless processes
  • Eddy Current + Hydrostatic Tested: 100% in-line eddy current testing of weld seam plus batch hydrostatic pressure testing
  • Flattening & Flaring Qualified: Weld integrity verified through flattening to 2/3 original OD and 60° flaring without cracking

Technical Specifications

StandardASTM A178/A178M Grade A
ChemistryC: 0.18 max, Mn: 0.27-0.63, S: 0.035 max, P: 0.035 max
OD Range12.7mm - 127.0mm
WT Range1.2mm - 8.0mm
Tensile Strength≥ 325 MPa
Yield Strength≥ 180 MPa
Max Working PressureUp to 350 psi (24 bar), application dependent

Applications

Low-pressure steam boilers, hot water boilers, economizer sections, fire-tube boiler tubes, waste heat recovery units under 350 psi design pressure, and general heat exchanger tube bundles where seamless-grade tube cost is not justified by operating conditions.

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ASTM A178-A ERW Electric Resistance Welded Carbon Steel Boiler Tube 50.8x4.5mm for Low Pressure Steam Boiler

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Product Detail
Brand Name :
WNRLN
Model Number :
A178A-ERWT
Place of Origin :
Jiangsu, China
Certification :
ISO 9001:2015, ASTM
MOQ :
5 Metric Tons
Price :
USD 600-900 / Metric Ton
Contact Supplier
ASTM A178-A ERW Electric Resistance Welded Carbon Steel Boiler Tube 50.8x4.5mm for Low Pressure Steam Boiler

ZHANGJIAGANG HUA DONG ENERGY TECHNOLOGY CO.,LTD

Verified Supplier
7 Years
jiangsu
Since 1985
Business Type :
Manufacturer, Exporter
Main Products :
Boiler Steel Tube, Seamless Boiler Tubes, Boiler Fin Tube
Total Annual :
100000000-110000000
Employee Number :
600~700
Certification Level :
Verified Supplier
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