1. What is ASTM A53 Class B ERW pipe？
ASTM A53 Class B ERW pipe is a type of carbon steel pipe conforming to the ASTM A53 specification. The dimensions of this series of pipes conform to ASTM, ASME, and API standards. Nominal inside diameters range from 0.5 inches to 36 inches. ASTM A53 specification covers seamless and welded black and hot-dipped galvanized steel pipe in NPS 1⁄8 to NPS 26(DN6 to DN 650).It is acceptable for welding,flagging,and bending. Cangtie Steel is a leading manufacturer and supplier of Schedule 40 SA53 GRB seamless steel pipe, welded steel pipe, and resistance welded steel pipe.
2. What are the advantages of ASTM A53 GR.B hot-dip galvanized welded steel pipe?
a. Superior Long-term Corrosion Protection
- 360° Coating: The hot-dip process ensures a uniform zinc coating on the inner, outer, and weld bead areas, eliminating any corrosion blind spots
- Sacrificial Anodic Protection: Even if the surface suffers mechanical damage, the zinc layer will corrode preferentially via electrochemical action, preventing the steel substrate from rusting.
b. Higher Strength Grade & Pressure Capacity
- Grade B Performance: Compared to Grade A, Grade B offers higher tensile strength ($\ge 415$ MPa) and yield strength ($\ge 240$ MPa) to handle more demanding industrial pressures.
- Structural Reliability: The robust steel base combined with high-quality ERW (Electric Resistance Welding) processes ensures structural safety under complex loads.
c. Minimal Maintenance & Extended Service Life
- Maintenance-free Design: The hard zinc-iron alloy layer is highly wear-resistant, providing a service life of 20-50 years in outdoor or industrial environments without periodic painting.
- Lifecycle Cost-effectiveness: While the initial investment is slightly higher, the extremely low frequency of repairs and replacements significantly reduces the overall operating costs.
d. Excellent Processing & On-site Installation
- Versatile Connections: The high adhesion of the galvanized layer supports threaded, grooved, or flanged connections, enabling flexible and efficient construction.
- Durable & Damage Resistant: The high hardness of the galvanized coating effectively resists bumps and scratches during transport and installation.
e. Wide Applications & Standard Compliance
- Industry-wide Usage: Widely utilized in fire sprinkler systems, HVAC, water supply/drainage, and low-pressure gas transmission.
- Strict Compliance: Fully complies with ASTM A53 specifications; dual-certified (ASTM/ASME) MTCs can be provided based on customer requirements.
3. What are the applications of ASTM A53 GR.B hot-dip galvanized welded steel pipes?
Galvanized pipe is a steel pipe that has been hot-dip galvanized and coated with a layer of zinc to improve its corrosion resistance and service life. Galvanized pipe has a wide range of uses in a variety of areas, including but not limited to:
1. Construction field:
Galvanized pipes are often used in building structures, such as stair handrails, railings, steel structural frames, etc. Due to the corrosion resistance of the zinc layer, galvanized pipes can be used outdoors and in humid environments for a long time and are not prone to rust.
2. Water supply and drainage systems:
Galvanized pipes are widely used in water supply and drainage systems to transport drinking water, industrial water, and sewage. Its corrosion resistance makes it a reliable choice for reducing pipe blockage and corrosion problems.
3. Oil and Gas Transmission:
Galvanized pipe is commonly used in pipeline systems that transport oil, natural gas, and other liquids or gases. The zinc layer protects the pipes from corrosion and oxidation in the environment.
4. HVAC Systems:
Galvanized pipes are also used in heating, ventilation and air conditioning systems. Since these systems are subject to a variety of environmental conditions, the corrosion resistance of galvanized pipe can extend its service life.
5. Road Guardrails:
Galvanized pipes are often used to manufacture road guardrails to provide traffic safety and marking of road boundaries.
6. Mining and Industrial Sector:
In the mining and industrial sector, galvanized pipes are used to transport ores, raw materials, chemicals, etc. Its corrosion resistance and strength properties make it suitable for use in these harsh environments.
7. Agricultural fields:
Galvanized pipes are also commonly used in agricultural fields, such as as pipes for farm irrigation systems, because of their ability to resist corrosion in the soil.
In summary, galvanized pipes have important applications in many different fields, from construction to infrastructure to industry and agriculture due to their corrosion resistance and versatility.
4. Technical Specification Sheet for ASTM A53 Grade B Hot-Dip Galvanized Steel Pipe
General Information
| Item | Description |
| Standard | ASTM A53 / ASME SA53 |
| Grade | Grade B |
| Type | Type E ( ERW) |
| Surface Finish | Hot-Dip Galvanized (HDG) |
| End Finish | Plain end, Beveled end, or Threaded & Coupled |
5. Standard Dimensions and Weights (Common Schedule 40)
| NPS (Nominal Pipe Size) | OD (Outside Diameter) | Wall Thickness (Sch 40) | Nominal Weight (Galvanized) |
| 1/2" | 0.840 in (21.3 mm) | 0.109 in (2.77 mm) | 0.85 lb/ft (1.27 kg/m) |
| 3/4" | 1.050 in (26.7 mm) | 0.113 in (2.87 mm) | 1.13 lb/ft (1.69 kg/m) |
| 1" | 1.315 in (33.4 mm) | 0.133 in (3.38 mm) | 1.68 lb/ft (2.50 kg/m) |
| 1-1/4" | 1.660 in (42.2 mm) | 0.140 in (3.56 mm) | 2.27 lb/ft (3.39 kg/m) |
| 1-1/2" | 1.900 in (48.3 mm) | 0.145 in (3.68 mm) | 2.72 lb/ft (4.05 kg/m) |
| 2" | 2.375 in (60.3 mm) | 0.154 in (3.91 mm) | 3.66 lb/ft (5.44 kg/m) |
| 2-1/2" | 2.875 in (73.0 mm) | 0.203 in (5.16 mm) | 5.80 lb/ft (8.63 kg/m) |
| 3" | 3.500 in (88.9 mm) | 0.216 in (5.49 mm) | 7.58 lb/ft (11.29 kg/m) |
| 4" | 4.500 in (114.3 mm) | 0.237 in (6.02 mm) | 10.80 lb/ft (16.08 kg/m) |
| 6" | 6.625 in (168.3 mm) | 0.280 in (7.11 mm) | 19.00 lb/ft (28.29 kg/m) |
6. ASTM A53 Pipe Chemical Properties %
| Element (%) | Type S (Seamless) Grade A | Type S (Seamless) Grade B | Type E (ERW) Grade A | Type E (ERW) Grade B | Type F (Furnace-welded) Grade A |
| Carbon max. % | 0.25 | 0.30* | 0.25 | 0.30* | 0.3 |
| Manganese % | 0.95 | 1.2 | 0.95 | 1.2 | 1.2 |
| Phosphorous max. % | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 |
| Sulfur max. % | 0.045 | 0.045 | 0.045 | 0.045 | 0.045 |
| Copper max. % | 0.40 | 0.40 | 0.40 | 0.40 | 0.4 |
| Nickel max. % | 0.40 | 0.40 | 0.40 | 0.40 | 0.4 |
| Chromium max. % | 0.40 | 0.40 | 0.40 | 0.40 | 0.4 |
| Molybdenum max. % | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 |
| Vanadium max. % | 0.08 | 0.08 | 0.08 | 0.08 | 0.08 |
7. Permissible Variations in Outside Diameter
Outside Diameter at any point shall not vary from standard specified more than:
Permissible Variations in Outside Diameter (for A53 Pipe)
| Pipe Size Range | Over (+) | Under (-) |
| NPS 1 1/2 and Smaller Sizes | 1/64" (0.4 mm) | 1/64" (0.4 mm) |
| NPS 2 and Larger Sizes | 1% | 1% |
8. Tensile Requirements
| Mechanical Property | Seamless and Electric-Resistance-Welded Grade A | Seamless and Electric-Resistance-Welded Grade B | Continuous-Welded |
| Tensile Strength, min. (psi) | 48,000 | 60,000 | 45,000 |
| Yield Strength, min. (psi) | 30,000 | 35,000 | 25,000 |
9. What is the production process of ASTM A53 GR.B hot-dip galvanized welded steel pipe?
10. Quality control of ASTM A53 GR.B hot-dip galvanized welded steel pipes?
Raw Material Checking, Chemical Analysis, Mechanical Test, Visual Inspection , Tension Test, Dimension Check, Bend Test , Flattening Test, Impact Test, DWT Test, NDT Test, Hydrostatic Test, Hardness Test…..
11. Packaging and shipping of ASTM A53 GR.B hot-dip galvanized welded steel pipes?
Adopting a professional industrial packaging solution that is moisture-proof and scratch resistant, each batch of steel is tied and fixed with customized wooden frames/steel strips, combined with anti rust coatings and cushioning pads to ensure zero damage during transportation. Clear product model, batch number, and storage identification on the outer packaging, supporting customized enterprise logos and information labels. Environmentally friendly and recyclable packaging materials practice green concepts, reducing transportation and disassembly costs.
Why choose us?
Reliable ASTM A53 Grade B Pipe Weight, CS ASTM A53 Grade B Schedule 80 Pipe, CS A53 Grade B Round Pipe Supplier in China. The wall thickness of the pipe varies from 3mm to 12mm and the length of the pipe varies from 3m to 18m and in custom lengths as well. The Carbon Steel ASTM A53 Grade B Welded Pipe is welded from strips and sheets of the same grade of material. The pipes can have beveled, end, treaded end and plain end types.
