Haihao Group Delivers Comprehensive Pipeline Products to Russian Client

Haihao Group has successfully completed the delivery of a wide range of pipeline products for a Russian customer. This shipment demonstrates our ability to provide complete piping connection and sealing solutions, covering flanges, gaskets, bolts, washers, and stud bolts, all manufactured to international standards and tailored for demanding service conditions.

Stainless steel bonded sealing washers with nitrile inserts

Shipment Overview

The order included the following products:

• Dowty Bonded Washers: 316 stainless steel with nitrile sealing element, sizes 1.1/2″, 1.1/4″, and 5/8″. These provide reliable sealing performance in hydraulic and high-pressure applications.
• Spectacle Blind Flange: DN50, CL300, manufactured to ASME B16.48, material ASTM A516 Grade 60, suitable for sour service and low-temperature applications.
• Threaded Stud Bolts: ASTM A193 Grade B8 and B7, sizes ranging from UNC 1″ × 1m to 5/8″ × 12ft, ensuring strong fastening under high pressure and temperature.
• Hex Bolts with Nuts and Washers: ASTM A320 L7, ASTM A194-4, hot-dip galvanized, metric coarse thread (M16 × 55mm, 3/4″ × 75mm, 1″ × 70mm), with enhanced corrosion resistance.
• Stud Bolts with Heavy Hex Nuts: ASTM A193 B7 and ASTM A320 L7, coated with fluorocarbon or hot-dip galvanizing, sizes UNC 7/8″ × 200mm and UNC 1/2″ × 65mm.
• Blind Flange: DN1200, CL600, raised face, ASTM A350 LF2 Class 1, manufactured to ASME B16.47 Series A, designed for low-temperature service.

ASME B16.48 ASTM A516 Grade 60 Spectacle Blind Flange ready for shipment

Product Highlights

• Complete Piping Package: From sealing washers to large-size blind flanges, this shipment covers the full spectrum of pipeline connection needs.
• High-Performance Materials: Stainless steel, carbon steel, and alloy steel grades (A516, A350 LF2, A193 B7/B8, A320 L7) ensure durability in extreme conditions.
• Corrosion & Pressure Resistance: Advanced coatings such as zinc-nickel plating, PTFE topcoat, fluorocarbon, and hot-dip galvanizing enhance long-term performance.
• International Standards Compliance: Products conform to ASME B16.5, B16.47, B18.2.1, B18.2.2, BS 4882, and ASTM specifications, with full material test certificates (EN 10204 3.1).

Applications

These pipeline components are widely used in:

• Oil & gas processing facilities
• Petrochemical and refinery plants
• Power generation projects
• Offshore and subsea applications

By delivering flanges, bolts, washers, and gaskets as a package, Haihao Group ensures clients receive a turnkey pipeline solution with consistent quality and seamless integration.