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hebeihaihao

Hebei haihao high pressure flange & pipe fitting group was established in 1982, located in Mengcun County the hometown of pipe fittings in China.


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Seamless Steel Pipe to Latvia | GOST 8732-78 Grade 20 Hot-Finished Pipe by Haihao Group

Haihao Group has successfully completed the production and shipment of a batch of seamless steel pipe to Latvia, manufactured in accordance with GOST 8732-78 standards. These pipes are designed for structural and industrial applications requiring high strength, dimensional accuracy, and strict quality control.

Project Overview: Seamless Steel Pipe to Latvia

This shipment of seamless steel pipe to Latvia includes the following specifications:

Product Details:

  • Product: Seamless Steel Pipe (Hot-Finished)
  • Standard: GOST 8732-78
  • Steel Grade: 20
  • Size: 630.0 mm × 10.0 mm
  • Total Weight: 1.53 tons

Tolerance Requirements:

  • Wall Thickness Tolerance: +12.5% / -15%
  • Outer Diameter Tolerance: ±1.25%
  • Total Weight Tolerance: +20% / 0%

These seamless steel pipe to Latvia products are manufactured with tight tolerances to ensure compatibility with demanding engineering systems.

Large diameter seamless steel pipe GOST 8732-78 grade 20

Large diameter seamless steel pipe GOST 8732-78 grade 20

Chemical Composition of Grade 20 Steel

The seamless steel pipe to Latvia is produced using controlled chemical composition to ensure performance stability:

  • C: 0.17–0.24%
  • Mn: 0.35–0.65%
  • Si: 0.17–0.37%
  • P ≤ 0.03%
  • S ≤ 0.035%
  • Cr ≤ 0.25%
  • Cu ≤ 0.30%
  • Ni ≤ 0.30%

This balanced composition ensures that the seamless steel pipe to Latvia provides good strength, ductility, and weldability.

Mechanical Properties at Ambient Temperature

To meet project requirements, the seamless steel pipe to Latvia complies with the following mechanical performance:

  • Tensile Strength (Min): 412 N/mm²
  • Yield Strength (Min): 245 N/mm²
  • Elongation (Min): 21%
  • Hardness: ≤ 156 HB

These properties make the seamless steel pipe to Latvia suitable for structural and pressure-related applications.

Inspection and Testing

Quality assurance is critical for every seamless steel pipe to Latvia delivered by Haihao Group. The following tests were strictly carried out:

Mandatory Testing:

  • ✔ Hydrostatic Pressure Test
  • ✔ Non-Destructive Testing (NDT)

Surface Inspection:

  • No rust, cracks, deformation, or visible defects
  • Clean internal and external surfaces

These procedures ensure that each seamless steel pipe to Latvia meets international quality expectations.

Advantages of GOST 8732 Seamless Steel Pipes

The seamless steel pipe to Latvia manufactured under GOST standards offers several advantages:

  • ✔ High structural integrity without weld seams
  • ✔ Excellent mechanical strength and durability
  • ✔ Reliable performance under pressure
  • ✔ Suitable for cold and moderate temperature environments

Applications

The supplied seamless steel pipe to Latvia is widely used in:

  • Structural engineering projects
  • Industrial pipelines
  • Machinery manufacturing
  • Oil & gas and energy sectors

Why Choose Haihao Group?

As a trusted supplier of seamless steel pipe to Latvia, Haihao Group provides:

  • Advanced hot-finished seamless production lines
  • Strict compliance with GOST and international standards
  • Comprehensive inspection and testing procedures
  • Strong export experience to Europe

We ensure every order meets both technical and commercial expectations.

Request a Quote Today

If you are looking for a dependable supplier of seamless steel pipe to Latvia, Haihao Group is ready to support your project.

Contact us now for a fast quotation and professional technical support.

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