Welcome to ALLLAND Steel Pipe Co., Ltd.
Welcome to ALLLAND Steel Pipe Co., Ltd.
ALLLAND Steel Pipe Supply
Welcome to ALLLAND Steel Pipe Manufacturing.ASTM A795 Grade A Steel Pipe is a carbon steel pipe specifically manufactured for fire protection and automatic sprinkler systems. It is produced according to ASTM A795/A795M Standard Specification for Black and Hot-Dipped Zinc-Coated Welded and Seamless Steel Pipe for Fire Protection Use.
As a professional ASTM A795 Grade A Steel Pipe Manufacturer, ALLLAND supplies ERW welded and galvanized steel pipes for commercial buildings, industrial facilities, warehouses, and fire protection projects worldwide.ASTM A795 Grade A pipe offers excellent weldability, dimensional accuracy, corrosion resistance options, and reliable pressure performance for fire sprinkler applications.
Alllandsteel is a steel pipe manufacturer based in China with 25 years of experience.
The facility spans 22,000 square meters, represents a RMB 700 million investment, and operates four production lines (JCOE, ERW, SMLS, SSAW) alongside five coating lines.
With an annual production capacity of 250,000 tons, the factory covers specifications ranging from Ø406 to Ø1524 and holds multiple international certifications (API/ASTM/EN/ISO/JIS). Focused on steel pipes, creating value for you!
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ASTM A795 Grade A is a standard for carbon steel pipe specifically intended for fire sprinkler systems.
The full title of the standard is: ASTM A795/A795M – Standard Specification for Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for Fire Protection Use
Grade A represents the standard-strength classification within ASTM A795 and is primarily used for fire protection piping systems in buildings.
O.D.:
1/2″ – 24″
DN15–DN600
21.3 mm – 610 mm
W.T.:
2.0 mm – 25.4 mm
SCH 10, SCH 40, SCH 80
Length:
5.8 m / 6 m / 11.8 m / Customized
Pipe Type:
ERW / Seamless Steel Pipe
Material:
Carbon Steel
Steel Grades:
Grade A
Tube Ends& Surface Treatment:
Square, Chamfered; Black Skin, Pickled, Painted/Oiled for Rust Prevention
Delivery Conditions:
Grade, Specification, Furnace Number, Standard
ASTM A795 Grade A steel pipe is designed for reliable fire protection systems with the following advantages:
Low carbon content provides good weldability and allows easy fabrication, threading, and grooving.
Reliable Pressure Performance
The pipe meets ASTM A795 mechanical requirements for fire sprinkler and fire water distribution systems.
Available in:
Flexible Installation
Compatible with:
ASTM A795 fire protection steel pipe is typically supplied in accordance with the ASME B36.10M / ASTM A795 dimensional standards; common specifications include Schedules 10, 40, and 80, with end configurations including plain end, threaded end, and grooved end.
| Nominal Pipe Size (NPS) | DN | Outside Diameter (OD) mm | Wall Thickness (WT) mm | Weight kg/m | Working Pressure Reference |
| 1/2″ | DN15 | 21.3 | 2.11 | 1.00 | Fire Sprinkler |
| 3/4″ | DN20 | 26.7 | 2.11 | 1.28 | Fire Sprinkler |
| 1″ | DN25 | 33.4 | 2.77 | 2.09 | Fire Sprinkler |
| 1-1/4″ | DN32 | 42.2 | 2.77 | 2.69 | Fire Sprinkler |
| 1-1/2″ | DN40 | 48.3 | 2.77 | 3.11 | Fire Sprinkler |
| 2″ | DN50 | 60.3 | 2.77 | 3.93 | Fire Sprinkler |
| 2-1/2″ | DN65 | 73.0 | 3.05 | 5.40 | Fire Sprinkler |
| 3″ | DN80 | 88.9 | 3.05 | 6.60 | Fire Sprinkler |
| 4″ | DN100 | 114.3 | 3.05 | 8.56 | Fire Sprinkler |
| 5″ | DN125 | 141.3 | 3.40 | 11.56 | Fire Sprinkler |
| 6″ | DN150 | 168.3 | 3.40 | 13.85 | Fire Sprinkler |
| 8″ | DN200 | 219.1 | 3.76 | 19.85 | Fire Sprinkler |
| 10″ | DN250 | 273.1 | 4.19 | 27.80 | Fire Sprinkler |
| 12″ | DN300 | 323.9 | 4.57 | 35.90 | Fire Sprinkler |
| NPS | DN | OD (mm) | WT (mm) | Weight (kg/m) | Typical Application |
| 1/2″ | DN15 | 21.3 | 2.77 | 1.27 | Small sprinkler branch |
| 3/4″ | DN20 | 26.7 | 2.87 | 1.69 | Sprinkler piping |
| 1″ | DN25 | 33.4 | 3.38 | 2.50 | Sprinkler branch |
| 1-1/4″ | DN32 | 42.2 | 3.56 | 3.39 | Fire distribution |
| 1-1/2″ | DN40 | 48.3 | 3.68 | 4.05 | Fire distribution |
| 2″ | DN50 | 60.3 | 3.91 | 5.44 | Main sprinkler line |
| 2-1/2″ | DN65 | 73.0 | 5.16 | 8.63 | Main pipe |
| 3″ | DN80 | 88.9 | 5.49 | 11.29 | Main pipe |
| 4″ | DN100 | 114.3 | 6.02 | 16.07 | Fire water line |
| 5″ | DN125 | 141.3 | 6.55 | 21.77 | Fire water line |
| 6″ | DN150 | 168.3 | 7.11 | 28.26 | Fire riser |
| 8″ | DN200 | 219.1 | 8.18 | 42.55 | Main fire pipeline |
| 10″ | DN250 | 273.1 | 9.27 | 60.31 | Large fire system |
| 12″ | DN300 | 323.9 | 10.31 | 81.47 | Fire water main |
| NPS | DN | OD (mm) | WT (mm) | Weight (kg/m) |
| 14″ | DN350 | 355.6 | 11.13 | 95.30 |
| 16″ | DN400 | 406.4 | 12.70 | 124.50 |
| 18″ | DN450 | 457.0 | 14.27 | 158.00 |
| 20″ | DN500 | 508.0 | 15.09 | 185.90 |
| 24″ | DN600 | 610.0 | 17.48 | 259.00 |
| End Type | Description | Typical Application |
|---|---|---|
| Plain End (PE) | Pipe ends are supplied without threading or beveling | Welding, mechanical coupling, and general piping connections |
| Threaded End (TE) | Pipe ends are threaded for direct connection with fittings | Small-diameter fire sprinkler systems |
| Grooved End (GE) | Pipe ends are roll-grooved or cut-grooved for coupling installation | Fire sprinkler systems using grooved couplings |
| Beveled End (BE) | Pipe ends are beveled to facilitate welding | Butt welding and field fabrication |
ASTM A795 Grade A carbon steel has controlled chemical limits to ensure weldability and mechanical performance.
| Element | Maximum (%) |
| Carbon (C) | 0.25 |
| Manganese (Mn) | 0.95 |
| Phosphorus (P) | 0.035 |
| Sulfur (S) | 0.035 |
| Property | ASTM A795 Grade A Requirement |
| Yield Strength | ≥ 30,000 psi (205 MPa) |
| Tensile Strength | ≥ 48,000 psi (330 MPa) |
| Elongation | ≥ 25% |
| Grade | Yield Strength | Tensile Strength |
| ASTM A795 Grade A | 205 MPa | 330 MPa |
| ASTM A795 Grade B | 240 MPa | 415 MPa |
Grade B provides higher strength, while Grade A is widely used for normal fire sprinkler piping.
1) Black Steel Pipe
Used in:
2) Galvanized Steel Pipe
Hot-dip galvanized ASTM A795 Grade A pipe is used where corrosion resistance is required.
Applications:
| Coating Type | Zinc Thickness |
| Hot-dip galvanized | ≥ 1.8 oz/ft² (≈275 g/m²) |
ASTM A795 Grade A steel pipe is designed for reliable fire sprinkler systems, which are automatic fire protection systems used in commercial and industrial buildings.
Fire Protection Sector (Core Applications)
① Automatic sprinkler systems
② Fire water piping systems
③ Industrial fire protection
| Feature | ASTM A795 Grade A | ASTM A53 Grade B |
| Main Application | Fire sprinkler | General pressure piping |
| Yield Strength | 205 MPa | 240 MPa |
| Tensile Strength | 330 MPa | 415 MPa |
| Fire Protection Approval | Specifically designed | General purpose |
| Coating | Black / Galvanized | Black / Galvanized |
| Common Use | Sprinkler piping | Water, gas, structural |
Please note:
ASTM A795 ≠ UL/FM certification
ASTM A795 is a material and manufacturing standard, whereas:
belong to fire protection product certification systems.
In actual fire protection projects, the following is often required:
ASTM A795 Grade A + UL Listed / FM Approved
Specifically:
ALLLAND ASTM A795 Grade A Steel Pipe can be supplied as ERW welded pipe with black coating or hot-dip galvanized finish, manufactured according to ASTM A795 requirements, with options for UL/FM approved fire sprinkler projects, grooved ends, threaded ends, and third-party inspection (SGS/BV/TUV).
ASTM A795 Grade A pipe is mainly used for automatic fire sprinkler systems, fire water pipelines, and industrial fire protection systems.
Yes. ASTM A795 Grade A pipes are available in both black steel and hot-dip galvanized finishes.
Grade B has higher mechanical strength, while Grade A is commonly used for standard fire sprinkler applications.
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