ASTM A252 GR1 GR2 Construction Round Shape ERW Steel Tubes

ERW ( Electric Resistance Welded ) pipes are welded longitudinally, manufactured from Strip / Coil and can be manufactured up to 24” OD. ERW pipe cold formed from a ribbon ofsteel pulled through a series of rollers and formed into a tube which is fused through an electric charge. It is mainly used for low/ medium pressure applications such as transportation of water/oil.

A252 Comparitive Specifications

ASTM Specification A252 describes nominal (average) wall steel pipe piles of cylindrical shape and applies to pipe piles in which the steel cylinder acts as a permanent load-carrying member or as a shell to form case-in-place concrete piles.

Surface imperfections exceeding 25% of the nominal wall in depth are considered defects. Defects not exceeding 22.5% of the nominal wall in depth may be repaired by welding. Before welding, the defect shall be completely removed.

• MECHANICAL PROPERTIES – TENSILE REQUIREMENTS

  	Grade 1	Grade 2	Grade 3
  Tensile Strength, min, psi	50,000	60,000	66,000
  Yield Strength	30,000	35,000	45,000

  CHEMICAL REQUIREMENTS FOR A252

  	Phosphorus
  Seamless and ERW Welded	Max% 0.050

  • Hydrostatic Testing: Not specified.
  • Mechanical Tests:
    • Tensile Test: Either longitudinal or transverse at option of manufacturer.
  • Number of Tests: One tensile test per 200 lengths.
• Testing Requirements for seamless and welded A252 steel piling pipe

• Permissible Variations for A252 steel piling pipe
  • Wall thickness: Not more than 12.5% under the nominal wall thickness specified.
  • Weights per foot: The weight of any individual length of pipe shall not vary more than 15% over or 5% under the weight specified. Each individual length shall be weighed separately.
  • Outside diameter: Shall not vary more than plus or minus 1% from the diameter specified.

Our Advantage:

Huayang specialized in manufacturing welded carbon steel pipes for 15 years. The annual output is around 1,000,000 tons. Our products have been exported to 40 countries and regions till now, such as Canada, Hong Kong, Vietnam, Bangladesh, The U.A.E, America, Spain, Italy, Netherlands, Kuwait, Saudi Arabia etc. So any inquiry or special demands will get fast and most professional reply.

Why choose us?

1. We are API/ISO Certificated manufacturer.

2. Have cooperated with a lot of importers for more than 8 years.

3. Experienced in doing business with big customers.

4. Quick delivery time for decent orders.Near to Tianjin port.

5. Factory audited by SGS.

6. Free samples could be provided.

Hebei Huayang Steel Pipe Company Ltd. is the largest ERW and LSAW steel pipe manufacturer in Northern China. Established in 2005, we have a modern factory covering an area of 666,000 square meters, with over 700 employees and a fixed asset of 200 million USD, annual output capacity is up to 1,000,000 Tons. We can quickly fulfill all of our domestic and international customers’ orders, try our best to meet customers’ requirements.

We are located in Cangzhou city, Hebei province, a large steel production base in Northern China. Huayang is near to the raw material steel mill, such as Hebei Zhongtie Equipment Company, Shandong Iron and Steel Co., Ltd, Shougang Group, Jinxi Group, which reduce the material cost. At the same time, Huayang is 210 kilometers from Beijing, 150 kilometers from Tianjin City, 160 kilometers from Xingang port, with convenient transportation, which is convenient for customer’s visit and reduce the transportation cost. With lower material cost control, we can offer more competitive price and significant profit for our customers.

Huayang use advanced imported production equipment such as German once-through rolling machines, British CT METORI digital controllers, one φ114.3mm-φ168.3mm ERW steel production line, three φ219mm-φ426mm ERW steel pipe production line, one φ426mm-φ660mm ERW steel pipe production line, one JCOE production lines for LSAW pipe, size range from 16” to 56” (406.4mm-1422.4mm), wall thickness: 9.53mm-50mm. In 2018, we build a new advanced RBE production line for LSAW pipe, size range from 16” to 56” (406.4mm-1422.4mm), wall thickness: 9.53mm-30mm.

Twenty φ245mm-φ820mm thermal expansion pipe production lines, we have our own high-tech physics and chemistry labs where we can conduct our own tests such as physical properties and chemical composition test, and as well, UT, hydraulic test, X-ray and other test equipment is available, which can meet all related standards and inspection requirements.

In order to provide One-Stop service for customers with superior products from qualified supplier, Huayang set up branch company, Cangzhou Wingo International Trading Co., Ltd in 2013, to help customers purchase different products, such as seamless steel pipes, SSAW steel pipes, Galvanized pipes, Anti-corrosion pipes, pipe fittings and flanges etc.

Huayang steel pipes are used as the construction material and the pipelines for oil, gas, water, steam, and other middle & low hydraulic pressure fluids. Huayang’s products are sold nationwide and mainly exported to Southeast Asia, Middle East, South America, Africa, North America and Europe. Our company has consistently aimed to provide our customers with high quality, affordable industrial pipes. “Huayang” brand steel pipe has gained praises and high reputation from all of the world.