Welcome to ALLLAND Steel Pipe Co., Ltd.
Welcome to ALLLAND Steel Pipe Co., Ltd.
ALLLAND Steel Pipe Supply
Welcome to ALLLAND Steel Pipe Manufacturing.GOST 10704 35 refers to welded steel pipe manufactured from Grade 35 steel according to the GOST standards system. GOST 10704-91 defines the dimensional range of electric-welded steel pipes, while Grade 35 refers to the steel grade, with its material requirements specified under GOST 1050.
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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GOST 10704 Grade 35 Pipe is an electric-welded steel pipe manufactured from Grade 35 non-alloy quality structural steel. GOST 10704-91 specifies the dimensional range of the welded pipe, while the chemical composition and mechanical properties of Grade 35 steel are governed by the applicable material standard, such as GOST 1050-2013.
O.D.:
10–1,420 mm*
W.T.:
0.8–20 mm*
Length:
2–18 m*, depending on pipe diameter and length requirements.
Pipe Type:
Electric-Welded Steel Pipe
Standards:
GOST 10704-91, GOST 1050-2013
Steel Grades:
Grade 35 (Сталь 35)
Surface Treatment:
Bare, Oiled, Painted or Coated
Delivery Conditions:
Grade, Specification, Furnace Number, Standard
* Available dimensions depend on the applicable size combinations, manufacturing process, and project requirements. Dimensions shall comply with GOST 10704-91.
GOST 10704 Grade 35 (Сталь 35) is a high-quality non-alloy structural steel in the Russian/former Soviet Union standards system. It is a medium-carbon steel, and the “35” in the grade designation typically corresponds to a carbon content of approximately 0.35%.
According to GOST 1050-2013, the primary chemical composition requirements for Grade 35 are as follows:
| Element | Content, % |
| C | 0.32–0.40 |
| Si | 0.17–0.37 |
| Mn | 0.50–0.80 |
| P | ≤ 0.030 |
| S | ≤ 0.035 |
| Cr | ≤ 0.25 |
| Ni | ≤ 0.30 |
| Cu | ≤ 0.30 |
Grade 35 (Сталь 35) is a non-alloy quality structural steel grade specified under the GOST 1050 standard system. According to GOST 1050-2013, the mechanical properties of Grade 35, when determined on normalized specimens, are specified as minimum values.
| Property | Minimum Value |
| Yield Strength | 315 MPa |
| Tensile Strength | 530 MPa |
| Elongation | 20% |
| Reduction of Area | 45% |
These values correspond to the Grade 35 requirements listed in Table 4 of GOST 1050-2013 for normalized specimens. The standard lists the values as minimum requirements: yield strength of 315 N/mm², tensile strength of 530 N/mm², elongation of 20%, and reduction of area of 45%.
Yield Strength – 315 MPa:This indicates the minimum stress at which Grade 35 begins to undergo permanent plastic deformation.
Tensile Strength – 530 MPa:This is the minimum tensile stress specified before the material reaches its ultimate tensile strength.
Elongation – 20%:This indicates the material’s ability to deform plastically before fracture.
Reduction of Area – 45%:This measures the reduction in cross-sectional area at the fracture location and provides an indication of ductility.
The above values should be presented as Grade 35 material properties under GOST 1050-2013, rather than automatically treating them as universal mechanical-property requirements for every GOST 10704 Grade 35 pipe.
The actual mechanical properties of a finished GOST 10704 Grade 35 steel pipe can depend on factors such as:
GOST 1050-2013 also allows, by agreement between the manufacturer and purchaser, a 20 MPa reduction in the minimum tensile-strength requirement for certain grades including Grade 35, provided the elongation requirement is simultaneously increased by 2 percentage points.
According to GOST 1050-2013, Grade 35 steel has a minimum yield strength of 315 MPa, a minimum tensile strength of 530 MPa, a minimum elongation of 20%, and a minimum reduction of area of 45% when tested on normalized specimens
GOST 10704-91 specifies the dimensional range of electric-welded longitudinal-seam steel pipes.
For a Grade 35 steel pipe, the pipe dimensions are selected according to the GOST 10704-91 size range, while Grade 35 identifies the steel material used to manufacture the pipe..
| Outside Diameter | Common Wall Thickness Options | Approx. Weight Range* |
| 35 mm | 1.0–2.8 mm | 0.838–2.22 kg/m |
| 48 mm | 1.0–3.0 mm | — |
| 57 mm | 1.0–3.5 mm | — |
| 76 mm | 1.2–4.0 mm | — |
| 89 mm | 1.2–4.0 mm | — |
| 108 mm | 1.5–5.0 mm | — |
| 159 mm | 1.5–6.0 mm | — |
| 219 mm | 2.0–8.0 mm | — |
| 273 mm | 3.0–10.0 mm | — |
| 325 mm | 4.0–10.0 mm | 31.67–70.14 kg/m |
| 426 mm | 4.0–10.0 mm | 41.63–92.55 kg/m |
| 530 mm | 5.0–10.0 mm | 64.74–115.64 kg/m |
| 630 mm | 7.0–9.0 mm | 107.55–137.83 kg/m |
| 820 mm | 8.0–10.0 mm | 140.35–180.00 kg/m |
| 1,020 mm | 9.0–10.0 mm | 199.66–224.39 kg/m |
| 1,220 mm | 10.0 mm+ | According to the selected WT |
| 1,420 mm | According to GOST size range | According to the selected WT |
* The theoretical weight varies with outside diameter and wall thickness. GOST 10704-91 calculates theoretical mass using a steel density of 7.85 g/cm³.
GOST 10704-91 also defines different length categories. For non-measured length, the minimum length depends on pipe diameter: at least 2 m for OD up to 30 mm, 3 m for OD over 30 to 70 mm, 4 m for OD over 70 to 152 mm, and 5 m for OD over 152 mm.
For measured-length pipes, the standard specifies different ranges according to diameter, including 5–9 m for pipes up to 70 mm, 6–9 m for pipes over 70 to 219 mm, and 10–12 m for pipes over 219 to 426 mm; pipes above 426 mm are generally supplied in non-measured lengths under the standard provisions.
GOST 10704 Grade 35 pipe combines the dimensional flexibility of electric-welded pipe with the strength and machinability of Grade 35 steel. It is mainly used in general engineering, machinery manufacturing and fabricated steel components.
General Engineering
Used for general-purpose mechanical and industrial components requiring moderate strength and good machinability.
Machinery Manufacturing
Suitable for machine frames, equipment components, supports and other tubular mechanical parts.
Note: For pressure, pipeline or other critical applications, additional product standards and project-specific requirements should be considered rather than relying on Grade 35 alone.
GOST 10704 Grade 35 is an electric-welded steel pipe manufactured from Grade 35 (Сталь 35) steel. GOST 10704-91 specifies the pipe’s dimensions, while the material requirements for Grade 35 are covered by the applicable GOST 1050 standard.
No. Grade 35 refers to the steel grade, not the pipe diameter. A GOST 10704 Grade 35 pipe can be supplied in different outside diameters and wall thicknesses according to the GOST 10704-91 size range.
Yes. GOST 10704 Grade 35 pipe can be supplied in different outside diameters, wall thicknesses and lengths according to the applicable standard and purchase requirements. Customized dimensions can also be discussed when required.
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