Haihao Group has recently completed the production and shipment of pre-machined forged round bars for a key customer in Kazakhstan, reaffirming the company’s commitment to delivering precision-engineered components for global industrial applications.

The supplied forged bars were manufactured in accordance with ASME SA-105, a standard widely recognized for carbon steel forgings used in pressure systems. The products include:

• Ø40 × 50 mm (-0/+1) forged round bar
• Ø37 × 34 mm (-0/+1) forged round bar

Each bar underwent strict metallurgical and mechanical testing to ensure compliance with project requirements and international specifications.

ASME SA-105 pre machined forged round bars ready for expor

Stringent Quality and Testing Procedures

To ensure optimal performance and reliability, Haihao Group implemented a complete series of inspections, including:

1. Chemical composition analysis of base metal to verify alloy purity.
2. Delivery in heat-treated condition for enhanced mechanical strength and toughness.
3. Tensile testing at 20°C, ensuring material consistency under standard service conditions.
4. Hardness control to guarantee uniform surface and core strength.
5. Macrostructure inspection to assess grain flow and forging integrity.
6. 100% ultrasonic testing (UT) according to ASTM A388, following ASME BPVC Section VIII, Division 2, Clause 3.6.3.
7. Carbon equivalent (CE) control ≤ 0.47, ensuring weldability and reduced risk of cracking.

Every stage of manufacturing – from forging to machining – was carefully monitored to maintain dimensional accuracy and structural integrity. The pre-machined round bars are now ready for integration into high-pressure piping systems, flanges, and other critical components used in Kazakhstan’s energy and construction sectors.

As a professional forged bar manufacturer and supplier, Haihao Group continues to serve global markets with high-quality ASME-compliant forgings. With decades of experience in material engineering, we provide tailor-made solutions for oil & gas, petrochemical, and mechanical industries worldwide.