Haihao Group Supplied ASTM A193 B7 Stud Bolts and A194 2H Nuts for Belarus Project

Haihao Group recently completed the production and delivery of a batch of high-strength fastening products for a customer project in Belarus. The order mainly included ASTM A193 B7 stud bolts and ASTM A194 2H heavy hex nuts, supplied with galvanized surface treatment to improve corrosion resistance and service reliability in industrial pipeline applications.

As critical connection components in pressure equipment, pipelines, and flange assemblies, stud bolts and nuts must maintain stable mechanical performance under high temperature, high pressure, and long-term operating conditions. Haihao Group focuses on manufacturing and supplying reliable fastening solutions according to international standards, ensuring that each batch meets customer requirements for material grade, dimensions, and surface protection.

ASTM A193 B7 Stud Bolts for High-Pressure Flange Connections

The main products supplied in this Belarus order were ASTM A193 B7 stud bolts, manufactured according to ASME B18.31.2 requirements. ASTM A193 Grade B7 is a chromium-molybdenum alloy steel grade widely used for pressure vessel and piping applications due to its excellent tensile strength and high-temperature performance.
The supplied stud bolts featured full-length threading, allowing flexible installation with matching heavy hex nuts. Different diameters and lengths were provided according to project requirements, including 5/8″, 3/4″, 7/8″, 1″, and 1-1/8″ sizes with various lengths.

For industrial pipeline systems, properly selected ASTM A193 B7 stud bolts help maintain flange integrity and reduce the risk of leakage caused by insufficient fastening force or temperature variation.

ASTM A193 B7 stud bolts and ASTM A194c2H heavy hex nuts with galvanized surface coating ready for shipment

ASTM A194 2H Nuts with Galvanized Protection 

To match the stud bolts, Haihao Group supplied ASTM A194 Grade 2H nuts manufactured according to ASME B18.2.2. ASTM A194-2H is a high-strength carbon steel nut specification commonly paired with ASTM A193 B7 bolts in pressure piping applications.

The nuts were supplied with galvanized coating, providing additional protection against corrosion during transportation, storage, and operation. The combination of galvanized ASTM A194-2H nuts and ASTM A193 B7 stud bolts offers a balanced solution for demanding industrial environments.

Quality Control and Manufacturing Inspection 

Before shipment, Haihao Group carried out strict quality inspections on the fastening products. The inspection process included:

• Material verification according to ASTM requirements
• Chemical composition inspection
• Mechanical property testing
• Dimensional inspection
• Thread accuracy checking
• Surface coating inspection

The manufacturing process was controlled to ensure that every ASTM A193 B7 stud bolts batch delivered to customers meets international standards and project specifications.

Product Details of Belarus Stud Bolt and Nut Order 

Reliable Fastening Solutions from Haihao Group 

With extensive experience in pipeline components, Haihao Group supplies not only flanges and pipe fittings but also complete fastening solutions including stud bolts, nuts, and related accessories. Our products are widely used in oil and gas, petrochemical, power generation, and industrial pipeline projects.

For customers requiring ASTM A193 B7 stud bolts or customized flange fastening components, Haihao Group can provide professional manufacturing support, strict quality control, and documentation according to international project requirements.

Contact Haihao Group for more information about high-strength stud bolts, heavy hex nuts, and pipeline fastening solutions.