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GR.1 Low Alloy Steel Seamless Boiler Tubes Welded ASME SA423 For Superheater Water Wall
GR.1 Low Alloy Steel Seamless Boiler Tubes Welded ASME SA423 For Superheater Water Wall
GR.1 Low Alloy Steel Seamless Boiler Tubes Welded ASME SA423 For Superheater Water Wall
GR.1 Low Alloy Steel Seamless Boiler Tubes Welded ASME SA423 For Superheater Water Wall
GR.1 Low Alloy Steel Seamless Boiler Tubes Welded ASME SA423 For Superheater Water Wall
GR.1 Low Alloy Steel Seamless Boiler Tubes Welded ASME SA423 For Superheater Water Wall
GR.1 Low Alloy Steel Seamless Boiler Tubes Welded ASME SA423 For Superheater Water Wall
GR.1 Low Alloy Steel Seamless Boiler Tubes Welded ASME SA423 For Superheater Water Wall
Specifications
Brand Name :
YuHong
Model Number :
ASME SA423 GR.1 ERW Tube
Certification :
ISO, ABS, BV, ISO, ASTM, SGS
Place of Origin :
China
MOQ :
200~500 KGS
Price :
Negotiable
Payment Terms :
T/T, L/C AT SIGHT
Supply Ability :
According to Clients' requirements
Delivery Time :
35-60 Days (Depend on Customer's Requirements)
Packaging Details :
Ply-wooden Cases with Plastic Caps on Tube's Both Ends
Product Name :
Low Alloy Steel Welded Tube
Tube Specification :
ASTM A423/ ASME SA423
Tube material :
Gr.1
Tube Type :
ERW
Tube's OD&WE :
Depend on Customer
Tube's length :
Depend on Customer
Tube's End :
Plain end
Application :
Superheater, Heat-Exchanger, Boiler
Description
ASME SA423 GR.1 Low Alloy Steel Welded Tube For Boiler And Superheater
Product Specifications
Product Name
Low Alloy Steel Welded Tube
Tube Specification
ASTM A423/ ASME SA423
Tube material
Gr.1
Tube Type
ERW
Tube's OD&WE
Depend on Customer
Tube's length
Depend on Customer
Tube's End
Plain end
Application
Superheater, Heat-Exchanger, Boiler
Product Description

ASME SA423 Grade 1 Electric Resistance Welded (ERW) tube is a low-alloy steel tube manufactured using the electric resistance welding process. This specification covers low-alloy steel tubes designed for high-temperature and high-pressure service, particularly in boilers and heat exchangers, with excellent resistance to atmospheric corrosion.

Material Composition
Composition, % Grade 1 Grade 2 Grade 3
Carbon, max 0.15 0.15 0.15
Manganese 0.55 max 0.50-1.00 0.70-1.40
Phosphorus 0.06-0.16 0.04 max 0.020 max
Sulfur, max 0.060 0.05 0.020
Silicon 0.10 min ... 0.55 max
Copper 0.20-0.60 0.30-1.00 0.25-0.45
Chromium 0.24-1.31 ... ...
Nickel 0.20-0.70 0.40-1.10 0.50 max
Molybdenum ... 0.10 min 0.20 max
Antimony ... ... 0.05-0.15
Mechanical Properties
Property Grades 1 and 2 Grade 3
Tensile Strength 415 MPa (60,000 psi) 380 MPa (55,000 psi)
Yield Strength 255 MPa (37,000 psi) 230 MPa (33,000 psi)
Elongation, min (%), (in 50 mm / 2 in) 25 35
Hardness (Brinell/Rockwell) ≤ 170 HBW / ≤ 87 HRB
Standards & Specifications
  • ASME SA423: Standard specification for seamless and welded low-alloy steel tubes for boilers and superheaters
  • Grade 1: Optimized for high-temperature service applications
  • Complies with ASME Boiler and Pressure Vessel Code (BPVC) Section II for material properties
Testing & Inspection
  • Hydrostatic testing, ultrasonic testing (UT), or eddy current testing to ensure weld integrity
  • Chemical and mechanical property verification per ASTM/ASME standards
Key Advantages
  • Cost-Effective: More economical than seamless tubes while maintaining high strength and durability
  • High-Temperature Resistance: Chromium-molybdenum (Cr-Mo) alloy provides excellent creep resistance up to 450°C (850°F)
  • Good Weldability: ERW process ensures strong, uniform welds without filler metals
  • Consistent Quality: Precise dimensional control for reliable performance in pressure applications
  • Corrosion Resistance: Resists oxidation and scaling in steam/high-heat environments
  • ASME Compliance: Meets strict Boiler & Pressure Vessel Code standards for safety
Primary Applications
  • Power Generation: Boiler tubes in thermal power plants, superheaters & reheaters, heat exchangers & condensers
  • Oil & Gas / Petrochemical: Refinery heat exchangers, high-temperature pipelines, furnace components
  • Industrial Process Equipment: Chemical processing units, pressure vessels, thermal fluid systems
  • District Heating Systems: Hot water supply pipelines, steam distribution networks
GR.1 Low Alloy Steel Seamless Boiler Tubes Welded ASME SA423 For Superheater Water Wall
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GR.1 Low Alloy Steel Seamless Boiler Tubes Welded ASME SA423 For Superheater Water Wall

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Product Detail
Brand Name :
YuHong
Model Number :
ASME SA423 GR.1 ERW Tube
Certification :
ISO, ABS, BV, ISO, ASTM, SGS
Place of Origin :
China
MOQ :
200~500 KGS
Price :
Negotiable
Contact Supplier
GR.1 Low Alloy Steel Seamless Boiler Tubes Welded ASME SA423 For Superheater Water Wall
GR.1 Low Alloy Steel Seamless Boiler Tubes Welded ASME SA423 For Superheater Water Wall
GR.1 Low Alloy Steel Seamless Boiler Tubes Welded ASME SA423 For Superheater Water Wall
GR.1 Low Alloy Steel Seamless Boiler Tubes Welded ASME SA423 For Superheater Water Wall

YUHONG HOLDING GROUP CO., LTD

Verified Supplier
1 Years
ningbo
Since 1990
Business Type :
Manufacturer, Distributor/Wholesaler
Main Products :
Studded Tube, Solid Fin Tube, Serrated Finned tube
Total Annual :
5000000-10000000
Employee Number :
50~100
Certification Level :
Verified Supplier
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