High-strength Erw Steel Pipe For Fire Sprinkler And Fluid Conveyance
Astm a135 grade b erw pipe offers high-strength solutions for fire sprinklers, gas, oil, and water conveyance.
High-strength Erw Steel Pipe For Fire Sprinkler And Fluid Conveyance
Astm a135 grade b erw pipe offers high-strength solutions for fire sprinklers, gas, oil, and water conveyance.
ASTM A135 Grade B ERW Pipe, compliant with ASME SA135, is an electric-resistance-welded (ERW) carbon steel pipe designed for conveying gas, vapor, water, or other liquids, particularly in fire sprinkler systems. With superior strength compared to Grade A, this pipe offers a minimum tensile strength of 415 MPa and yield strength of 240 MPa, making it ideal for high-pressure applications in industries like oil and gas, water distribution, and HVAC systems.
Manufactured using high-frequency ERW processes, ASTM A135 Grade B ERW Pipe is available in sizes from NPS 2 to 30 [DN 50–750] with nominal wall thicknesses up to 12.7 mm, and in smaller sizes (NPS 3/4 to 5 [DN 20–125]) with wall thicknesses from 2.11 to 3.40 mm. The weld seam is heat-treated to a minimum of 1000°F [540°C] to eliminate untempered martensite, ensuring durability and resistance to cracking. Surface coatings like galvanizing or 3LPE enhance corrosion-resistant ERW pipes for extended service life in demanding environments.
Rigorous testing, including flattening, hydrostatic, and nondestructive electric tests (eddy current or ultrasonic), ensures compliance with ASTM A135 standards. These pipes are suitable for welding but not for flanging or bending, unlike Grade A. Their high strength and cost-effective ERW construction make them a preferred choice for fire sprinkler systems, gas and oil pipelines, and low-pressure fluid conveyance.
Compared to ASTM A53 Grade B pipes, ASTM A135 Grade B ERW Pipe is specifically designed for fire protection and low-pressure systems, offering a balance of strength, weldability, and affordability. Its red-painted exterior aids identification in fire sprinkler applications, ensuring safety and compliance.
ASTM A135 Grade B ERW Pipe addresses challenges like pipeline wear, corrosion, and pressure demands, providing engineers with reliable, high-strength solutions for fluid conveyance and fire protection systems.
ASTM A135 ERW Steel Pipe Overview
ASTM A135 ERW steel pipes are manufactured with tight dimensional tolerances, designed for conveying fluids and use in fire protection systems.
ASTM A135 ERW steel pipes are produced by rolling steel strips and welding the seam using electric resistance welding (ERW). The weld seam is heat-treated to eliminate untempered martensite, ensuring strength and uniformity, with weld flash removed from both inner and outer surfaces for a smooth finish. These pipes offer tighter dimensional tolerances and lighter weight compared to other welded pipes.
Intended for conveying gas, vapor, water, or other liquids, ASTM A135 pipes are also widely used in water-based fire protection systems, including wet, dry, preaction, and deluge sprinkler systems. Compliant with ASTM A135 standards, they undergo rigorous testing, such as hydrostatic and non-destructive inspections, to ensure reliability in applications like water distribution and industrial fluid transport.
ASTM A135 ERW pipes provide durable, cost-effective solutions for fluid conveyance and fire protection, meeting stringent quality standards.
Minimum tensile strength of 415 MPa for high-pressure applications.
Galvanized or 3LPE coatings enhance durability in harsh environments.
Heat-treated welds ensure no untempered martensite for reliability.
NPS 2–30 with customizable lengths for diverse projects.
ERW construction reduces costs compared to seamless pipes.
Meets ASTM A135 and ASME SA135 standards.
Explore ASTM A135 Grade B ERW Pipe with targeted long-tail keywords for specifications, applications, and materials.
Note: ASTM A135 Grade B ERW Pipe meets international standards, ensuring high performance and reliability. Contact suppliers for detailed specifications.
| Element | Composition (% max) |
|---|---|
| Carbon (C) | 0.30 |
| Manganese (Mn) | 1.20 |
| Phosphorus (P) | 0.035 |
| Sulfur (S) | 0.035 |
The chemical composition ensures weldability and durability for ASTM A135 Grade B ERW Pipe in fire sprinkler and fluid conveyance applications.
ASTM A135, identical with ASME SA-135, is the standard specification for electric-resistance-welded steel pipe. It covers two grades of ERW steel pipe in NPS 2 to NPS 30 [DN 50 to DN 750], with nominal (average) wall thickness up to 0.500″ [12.7 mm], and in nominal sizes NPS 3/4 to NPS 5 [DN 20 to DN 125] with nominal (average) wall thickness 0.083″ [2.11 mm] to 0.134″ [3.40 mm], depending on size. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification.
The ASTM A135 ERW steel pipes are intended for conveying gas, vapor, water or other liquid; only Grade A is adapted for flanging and bending. The selection of this ERW pipe for various applications depends on its dimensions, properties, and conditions of service. The pipe may be furnished either non-expanded or cold expanded at the option of manufacturer. When pipe is cold expanded, the amount of expansion shall not exceed 1.5% of the outside diameter of pipe size.
These properties ensure ASTM A135 Grade B ERW Pipe delivers robust performance in high-pressure fluid conveyance and fire protection systems.
| Feature | ASTM A135 Grade B | ASTM A53 Grade B | ASTM A795 |
|---|---|---|---|
| Manufacturing Process | ERW | ERW/Seamless | ERW |
| Diameter Range | NPS 2–30 | NPS 1/8–26 | NPS 1/2–10 |
| Wall Thickness | Up to 12.7 mm | Up to 12.7 mm | Up to 7.11 mm |
| Applications | Fire sprinklers, fluid conveyance | Water, gas, steam | Fire protection |
| Tensile Strength (min, MPa) | 415 | 415 | 414 |
| Cost | Moderate | Moderate to High | Moderate |
ASTM A135 Grade B ERW Pipe offers superior strength for fire sprinkler and low-pressure fluid applications compared to ASTM A53 and A795 pipes. Below is a comparison of key features.
| ASTM STANDARD | UNS NO. | KOREA/JAPANESE | GERMAN | BRITISH | BELGIAN | FRENCH | ITALIAN | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KS/JIS Symbol | KS/JIS Number | Remarks | DIN Type | DIN Number | Material Number | Remarks | B.S Number | B.S Grade | NBN Type | NBN Grade | Remarks | AFNOR Type | NF Number | Remarks | UNI Type | UNI Number | Remarks | |||
| ASTM A178C-Steel Electric-Resistance-Welded Boiler Tubes | ||||||||||||||||||||
| Grade A | K01200 | STBH 340 / STB 35 | D3563 / G3461 | St 37.8 | 17177 | 1.0315 | (7) | 3059 | ERW 320 | (3) | (3) | |||||||||
| Grade C | K03503 | SHBH 410 / STB 42 | D3563 / G3461 | St 42.8 | 17177 | 1.0498 | (7) | (3) | (3) | |||||||||||
| ASME | EN | DIN | JIS |
|---|---|---|---|
| ASME SA178 | EN 10217-2 | DIN 17177 | JIS G 3461 |
ASTM A178 tubes are available in various sizes, with the following common dimensions:
The permissible variations in dimensions are as follows:
Several tests are performed to ensure the quality and integrity of ASTM A178 ERW steel pipes:
ASTM A135 Grade B ERW Pipe is engineered for high-strength and durable performance in fire sprinkler systems, gas and oil transportation, water distribution, HVAC systems, low-pressure fluid conveyance, and structural applications, meeting the demands of critical fluid conveyance systems.
Red-painted ASTM A135 Grade B ERW Pipe ensures reliable fire protection in commercial and industrial buildings.
High-strength pipes for safe and efficient conveyance of gas and oil in pipelines.
Durable pipes for municipal and industrial water distribution systems.
Reliable piping for heating, ventilation, and air conditioning applications.
Efficient pipes for low-pressure liquid transport in industrial systems.
High-strength pipes for structural support in construction projects.
Why Choose ASTM A135 Grade B ERW Pipe? Its high-strength, corrosion-resistant design ensures reliable performance in fire protection and fluid conveyance systems, addressing challenges like pipeline wear and pressure demands.
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