ALLLAND Boiler Steel Pipe Supply
Welcome to ALLLAND. We specialize in manufacturing pipes that comply with the ASTM A795 standard, meeting all specified parameters—including pressure ratings, connection methods, and wall thickness requirements—which are designed to fully address the operational demands of fire sprinkler systems, ensuring a reliable water supply during a fire. The ASTM A795 standard requires that every steel pipe undergo a hydrostatic pressure test to ensure that the piping can withstand the impact of high-pressure water during fire suppression operations, preventing leaks or pipe bursts at critical moments.
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 is a standard specification published by the American Society for Testing and Materials (ASTM). ASTM A795 is a standard specifically for steel pipes used in fire protection systems; these pipes ensure the rapid and safe delivery of water or other fire extinguishing agents in the event of a fire. The ASTM A795 standard clearly specifies that the scope of application covers nominal pipe sizes (NPS) ranging from 1/2 inch to 10 inches. Meeting these stringent requirements, ALLLAND, as a professional steel pipe manufacturer, specializes in producing fire protection steel pipes that comply with the ASTM A795 standard.
O.D.:
1/2“ (12.7 mm) to 8” (203.2 mm)
W.T.:
Schedule 10, 40, 80, and Schedule 160
Length:
6 meters (20 feet) or 12 meters (40 feet)
Tests:
Hydrostatic pressure test, non-destructive electrical testing, flattening test, tensile test, bending test.
Tube Ends:
Plain ends, beveled ends, threaded ends, grooved
Surface Treatment:
black steel pipes, galvanized steel pipes, painted steel pipes
| NPS | OD (mm) | SCH 10(mm) | SCH 40 (mm) | SCH 10 (kg/m) | SCH 40 (kg/m) |
| 1/2″ | 21.3 | 2.11 | 2.77 | 0.98 | 1.27 |
| 3/4″ | 26.7 | 2.11 | 2.87 | 1.26 | 1.69 |
| 1″ | 33.4 | 2.77 | 3.38 | 2 | 2.5 |
| 1-1/4″ | 42.2 | 2.77 | 3.56 | 2.64 | 3.38 |
| 1-1/2″ | 48.3 | 2.77 | 3.68 | 3.08 | 4.05 |
| 2″ | 60.3 | 2.77 | 3.91 | 3.89 | 5.44 |
| 2-1/2″ | 73 | 3.05 | 5.16 | 5.44 | 8.63 |
| 3″ | 88.9 | 3.05 | 5.49 | 6.62 | 11.29 |
| 4″ | 114.3 | 3.05 | 6.02 | 8.36 | 16.07 |
| 5″ | 141.3 | 3.4 | 6.55 | 11.84 | 21.77 |
| 6″ | 168.3 | 3.4 | 7.11 | 14.25 | 28.26 |
| 8″ | 219.1 | 3.76 | 8.18 | 21.24 | 42.55 |
| 10″ | 273 | 4.19 | 9.27 | 30.45 | 60.32 |
| 12″ | 323.9 | 4.57 | 10.31 | 38.75 | 73.81 |
| Elements | Range |
| Carbon (C) | ≤0.26% |
| Manganese (Mn) | 0.30% to 1.06% |
| Silicon (Si) | 0.10% to 0.60% |
| Sulfur (S) | ≤0.05% |
| Phosphorus (P) | ≤0.05% |
| Nickel (Ni) | ≤0.50% |
| Copper (Cu) | 0.20% to 0.50% |
| Chromium (Cr) | ≤0.30% |
Note: Although A795 Grade B has good weldability due to its carbon content (≤0.30%), preheating is still required when welding in cold winter conditions.
Carbon (C) and manganese (Mn) are positively designed elements: carbon provides the base strength, while manganese further enhances this strength and improves microstructural properties. Phosphorus (P) and sulfur (S) are negatively limited elements. Phosphorus is strictly limited to ensure the safe use of the pipeline in low-temperature environments and prevent brittle fracture; sulfur is strictly limited to ensure process safety during welding and prevent cracking.
The mechanical properties of ASTM A795 steel pipes are a key factor in ensuring their reliable use in fire protection piping systems. These properties include tensile strength, yield strength, and elongation; they must be balanced within reasonable limits to ensure the normal and stable operation of the fire protection system when subjected to pressure or environmental changes.
| Performance Specifications | Required values | Engineering Significance |
| Tensile Strength | ≥415 MPa | Measures the maximum stress a steel pipe can withstand before breaking. |
| Yield Strength | ≥240 MPa | Refers to the stress at which the steel pipe begins to undergo permanent plastic deformation. |
| Elongation | ≥19% | Indicates the steel pipe’s capacity for plastic deformation prior to tensile fracture. The higher the elongation, the better the material’s toughness and the greater its ability to absorb energy. |
In practice, it is important to note that higher tensile strength is not necessarily better; excessively high strength implies an increase in carbon equivalent, which leads to reduced weldability and increased low-temperature brittleness.
If you have specific project requirements, please contact us with details on the application scenario and pipe diameter specifications. ALLLAND can assist you in further confirming the product configuration plan.
ALLLAND’s ASTM A795 fire-rated steel pipes have obtained UL and FM certifications. These two certifications represent the most authoritative and stringent safety standards in the international fire protection industry. Holding UL/FM certifications means the products can be used directly in international engineering projects with strict requirements without the need for secondary testing.
Yes. ALLLAND’s standard supply lengths include 5.8 m, 6 m, 11.8 m, and 12 m. We also offer custom cutting services to meet specific project requirements.
While ASTM A795 itself does not mandate low-temperature impact toughness, galvanized pipes maintain stable performance in cold conditions. For projects involving extreme low temperatures, we recommend verifying impact requirements.
