ALLLAND Boiler Steel Pipe Supply
Welcome to ALLLAND. We specialize in manufacturing high-quality GOST 10704 electric welded steel pipes, widely used in construction, oil & gas transportation, water pipelines, and industrial applications. We offer a wide range of specifications, covering various outer diameters and wall thicknesses, and support cut-to-length production and customization. Additionally, our products can be treated with corrosion protection according to customer requirements—such as black paint, galvanization, or 3PE coating—to meet the demands of different operating environments.
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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The GOST 10704 standard is one of the core specifications developed by the former Soviet Union specifically for welded steel pipes. Steel pipes conforming to this standard are widely used in Russia and other CIS countries, including Kazakhstan, Belarus, and Ukraine. GOST 10704 specifies the dimensions, lengths, tolerances, and manufacturing process requirements for these pipes. Typically, GOST 10704 is used in conjunction with GOST 1050 and GOST 380, and is widely applied in building structures, mechanical engineering, oil and gas transportation, and pile foundation support structures. The primary objective of the GOST 10704 standard is to establish uniform specifications to ensure product consistency, and it is extensively used in heavy industry, energy, and infrastructure sectors.
O.D.:
10 mm–1,420 mm. Large-diameter pipes (>630 mm) are typically used for structural applications or low-pressure transportation.
W.T.:
0.8 mm–32 mm. Wall thickness corresponds to the outer diameter; large-diameter pipes with thick walls are often used for load-bearing transportation.
Length:
Fixed lengths: 6m/9m/12m; Random lengths: 4–12m.
Grades:
St1 / St2 / St3/ St10/ St20/ 09G2S
Process:
ERW/LSAW—low cost, high efficiency, and wide range of dimensions.
Pipe ends:
Plain ends, beveled ends, threaded ends.
Surface Treatment:
Black pipe, Oiled, Varnish, Galvanized, 3PE / FBE (anti-corrosion coating)
Delivery Conditions:
Grade, Specification, Furnace Number, Standard
| OD (mm) | WT (mm) | Weight (kg/m) |
| 21.3 | 2 | 0.99 |
| 21.3 | 2.5 | 1.21 |
| 26.9 | 2 | 1.27 |
| 26.9 | 2.5 | 1.57 |
| 33.7 | 2.5 | 1.98 |
| 33.7 | 3.2 | 2.5 |
| 42.4 | 2.5 | 2.54 |
| 42.4 | 3.2 | 3.21 |
| 48.3 | 3 | 3.33 |
| 48.3 | 3.5 | 3.84 |
| 60.3 | 3.5 | 4.88 |
| 60.3 | 4 | 5.54 |
| 76.1 | 3.5 | 6.26 |
| 76.1 | 4 | 7.11 |
| 88.9 | 4 | 8.38 |
| 88.9 | 5 | 10.34 |
| 114.3 | 4.5 | 12.15 |
| 114.3 | 6 | 15.85 |
| 139.7 | 5 | 16.94 |
| 139.7 | 6 | 20.2 |
| 168.3 | 6 | 24.7 |
| 168.3 | 8 | 32.6 |
| 219.1 | 6 | 32.04 |
| 219.1 | 8 | 42.35 |
| 273 | 7 | 46.4 |
| 273 | 9 | 59.3 |
| 323.9 | 8 | 62.8 |
| 323.9 | 10 | 78 |
| 406.4 | 10 | 97.6 |
| 406.4 | 12 | 116.9 |
GOST 10704 is a dimensional standard that specifies only the dimensions, shape, and length of steel pipes; the performance and material properties of steel pipes are typically specified in conjunction with GOST 10705. In practical engineering applications, these two standards must be used together and are both essential.
GOST 10705 is divided into four groups based on quality indicators: Group A, Group B, Group C, and Group D. Group A includes the following steel grades: St1, St2, St3, and St4; Groups B and C include: St1–St4, 08, 10, 15, 20, 08Yu, and 22Gyu; Group D includes all steel grades.
The mechanical properties of common steel grades are summarized as follows:
| Steel Grade | Condition | Tensile strength (MPa) | Yield strength (MPa) | Elongation (%) |
| St3sp | Heat-treated/Hot-rolled | 370–430 | 225–245 | 23 |
| Untreated | 370–430 | 225–245 | 20 | |
| 20 | Heat-treated/Hot-rolled | ≥410 | ≥245 | 20 |
| Untreated | ≥410 | ≥245 | 20 | |
| 09G2S | Heat-treated/Hot-rolled | ≥490 | ≥343 | ≥20 |
| 22GYu | Heat-treated | To be determined by agreement | To be determined by agreement | As specified in the agreement |
Note: The properties of heat-treated/hot-rolled materials are superior to those of untreated materials.
| Grades | C(%) | Si(%) | Mn(%) | P(%)≤ | S(%)≤ |
| Ст3сп | 0.14-0.22 | 0.15-0.30 | 0.40-0.65 | 0.040 | 0.050 |
| 20 | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.040 |
| 09Г2С | ≤0.12 | 0.50-0.80 | 1.30-1.70 | 0.035 | 0.040 |
GOST 10704 is a dimensional standard for electric-welded straight-seam steel pipes, primarily used in building structures, mechanical manufacturing, low-pressure fluid pipelines, and general industrial equipment.
1 Low-Pressure Fluid Conveyance
Low-pressure fluid conveyance is the primary and most critical application area for GOST 10704 steel pipes. These pipes are used to transport domestic and industrial water, as well as for the low-pressure conveyance of natural gas and liquefied petroleum gas (LPG). They are also widely used in district heating networks to transport heating media during the winter. Such applications typically involve low pressure ratings (≤4.0 MPa) but place high demands on the pipes’ weldability and leak-tightness.
2 Building Structures
The most widespread application of GOST 10704 steel pipes is in building structures, primarily for non-load-bearing applications. Main uses include: scaffolding, temporary support systems, frame support components for warehouses, stair railings, balcony guardrails, foundation steel pipe piles, and temporary shed frameworks.
3 Oil and Gas Industry
Long-distance, high-pressure oil and gas trunk lines primarily use spiral-welded pipes (GOST 20295) or seamless steel pipes (GOST 8732), while GOST 10704 steel pipes serve important auxiliary purposes in the oil and gas sector. Applications include process piping at facilities, water injection pipelines, and structural support components.
