ASME SA 795 Grade B Pipe will help you to guarantee the compliance and safety of your fire prevention systems. This specification addresses carbon steel pipe especially made and intended for use in fire sprinklers and other fire safety systems. ASME SA 795 Grade B Pipe provides the necessary strength, durability, and adherence to strict industry criteria needed for life-safety systems; available in both electric-resistance welded (ERW) and seamless steel pipe forms. For commercial, industrial, and household fire suppression projects, its proven performance lends trust.
Why Choose ASME SA 795 Grade B Pipe for Fire Protection?
Designed especially to fulfil the rigorous criteria of fire safety systems, ASME SA 795 Grade B Pipe Unlike conventional plumbing pipes, this specification requires more rigorous quality controls and testing procedures pertinent to fire safety, including hydrostatic testing and adherence to particular mechanical qualities essential for system integrity under pressure. Selection of ASME SA 795 Grade B guarantees:
- Compliance: follows ASTM, UL, FM, ASME, ASTM, and key fire safety guidelines and requirements.
- Reliability: Made to resist the forces related to fire sprinklers.
- Durability: provides long service life, particularly when provided with galvanising or corrosion-resistant coatings.
- Versatility: Appropriate for pre-action, deluging, wet, dry, sprinkler systems.
ASME SA 795 Grade B Pipe Standards and Certifications
Our ASME SA 795 Grade B pipes meet or exceed the following specifications:
| Standard / Certification | Description |
|---|---|
| ASME SA 795 | Covers black and hot-dipped galvanized welded and seamless steel pipe for fire protection use |
| ASTM A795 | Equivalent ASTM specification for fire protection piping |
| UL Listed (Underwriters Laboratories) | Certified for compliance with fire protection safety standards |
| FM Approved (Factory Mutual) | Approved for fire suppression systems |
| ANSI/ASME B36.10M | Standard for welded and seamless wrought steel pipe dimensions |
| ISO 9001:2015 | Quality Management System Certification |
| PED 2014/68/EU | Pressure Equipment Directive Certification for European markets |
| EN 10255 / BS 1387 Equivalent | European and British standards for non-alloy steel tubes suitable for welding and threading |
Material Test Certificates (MTC) are available upon request, confirming compliance.
ASME SA 795 Grade B Pipe Chemical Composition
The regulated chemical composition guarantees constant performance and qualities:
| Element | Maximum Composition (%) |
|---|---|
| Carbon (C) | 0.30 |
| Manganese (Mn) | 1.20 |
| Phosphorus (P) | 0.035 |
| Sulfur (S) | 0.035 |
Note: Mill test results and the production method—welded/seamless—may somewhat affect specific values. For precise composition always refer to the MTC.
Mechanical Properties Of ASME SA 795 Grade B Pipe
These features assure the pipe's capacity to manage installation stresses and system pressures:
| Property | Value |
|---|---|
| Tensile Strength, min | 415 MPa (60,000 psi) |
| Yield Strength, min | 240 MPa (35,000 psi) |
| Elongation (in 2") | 25% (minimum) |
Available Sizes, Schedules, and Dimensions ASME SA 795 Grade B Pipe
ASME SA 795 Grade B Pipe is available in conventional designs with ranges:
| Nominal Pipe Size (NPS) | Outside Diameter (OD) | Wall Thickness (Schedule 10/40/80) | Length |
|---|---|---|---|
| ½ inch | 21.3 mm | 1.65 mm / 2.77 mm / 3.73 mm | 6 m / Custom Lengths |
| 1 inch | 33.4 mm | 2.77 mm / 3.38 mm / 4.55 mm | 6 m / Custom Lengths |
| 2 inch | 60.3 mm | 2.77 mm / 5.54 mm / 8.74 mm | 6 m / Custom Lengths |
| 4 inch | 114.3 mm | 3.05 mm / 6.02 mm / 8.56 mm | 6 m / Custom Lengths |
| 6 inch | 168.3 mm | 3.40 mm / 7.11 mm / 10.97 mm | 6 m / Custom Lengths |
| 8 inch | 219.1 mm | 3.76 mm / 8.18 mm / 12.70 mm | 6 m / Custom Lengths |
| 10 inch | 273.0 mm | 4.19 mm / 9.27 mm / 15.09 mm | 6 m / Custom Lengths |
| 12 inch | 323.9 mm | 4.57 mm / 9.53 mm / 17.48 mm | 6 m / Custom Lengths |
Key Features & Benefits
- Engineered for Fire Safety: Specifically designed and tested for fire protection systems.
- High Strength & Durability: Withstands system pressure and provides long service life.
- Corrosion Resistance Options: Available hot-dip galvanized for enhanced protection against corrosion, crucial in wet and dry systems.
- Versatile Application: Suitable for various fire sprinkler system types and related water distribution.
- Certified Compliance: Meets key industry standards including ASME SA 795, ASTM A795, and often carries UL Listing and FM Approval marks.
- Weldable & Fabricatable: Can be easily welded, grooved, or threaded on-site for installation.
Common Applications
ASME SA 795 Grade B pipe is predominantly used in:
- Fire Sprinkler Systems: Wet pipe, dry pipe, pre-action, and deluge systems in commercial, industrial, and residential buildings.
- Fire Standpipe Systems: Providing connections for fire hoses.
- Fire Hydrant Supply Lines: Connecting mains to fire hydrants.
- Industrial Piping: Where compliance with fire safety codes is mandated for water lines.
- HVAC Systems: In some chilled water or heating applications requiring robust piping.
Related Products
- ASTM A53 Grade B Pipes (Commonly used for general pressure and mechanical applications)
- ASTM A106 Grade B Pipes (Seamless pipe for high-temperature service)
- ASTM A135 Pipes (Electric-Resistance-Welded steel pipe)
Frequently Asked Questions (FAQ)
Q1: What is the main difference between ASME SA 795 Grade A and Grade B?
The primary difference lies in the mechanical properties. Grade B has higher minimum tensile strength (60 ksi vs. 48 ksi) and yield strength (35 ksi vs. 30 ksi) compared to Grade A, making Grade B suitable for potentially higher pressure applications.
Q2: Can ASME SA 795 pipe be used for potable water?
While physically capable, SA 795 is primarily intended for fire protection. For potable water, pipes meeting NSF/ANSI 61 standards are typically required. Galvanized SA 795 might be acceptable in some jurisdictions, but always check local codes.
Q3: What do UL Listing and FM Approval mean for this pipe?
These are third-party certifications indicating the pipe has been tested and meets specific safety and quality standards crucial for fire protection equipment reliability. Many insurance providers and local regulations mandate UL/FM approved components.
Q4: Is ASME SA 795 Grade B pipe always galvanized?
No, it's available in both black (bare steel) and hot-dip galvanized finishes. Galvanizing provides superior corrosion resistance, often preferred for wet pipe systems or environments prone to moisture.
