Haihao Group recently completed the production and delivery of a batch of ASME B16.9 A420 Gr.WPL6 seamless pipe fittings for a long-term client in Russia.
The supplied products include elbows, tees, reducers, and caps, all manufactured from ASTM A420 Grade WPL6 low-temperature carbon steel and finished with hot-dip galvanizing for enhanced corrosion resistance.
These fittings are engineered for low-temperature and high-pressure environments, where both strength and impact toughness are essential. The galvanized surface provides a durable protective coating that prevents rusting during storage, transportation, and field installation—ensuring a longer service life in harsh conditions.

ASME B16.9 A420 Gr.WPL6 Seamless Pipe Fittings with Galvanized finish supplied by Haihao Group
Product Details and Manufacturing Standards
The shipment covers a complete range of seamless butt weld fittings strictly manufactured to ASME B16.9 and ASTM A420 Gr.WPL6 standards.
Main products include:
- 45° & 90° Elbows — precisely formed for smooth flow and minimal pressure loss.
- Concentric & Eccentric Reducers — ensuring consistent diameter transitions in the pipeline system.
- Equal & Reducing Tees — providing reliable branch connections under cryogenic conditions.
- End Caps — sealing pipe ends securely in low-temperature and pressurized systems.
Each fitting underwent strict dimensional checks, galvanizing quality inspection, and mechanical property testing. The final products were supplied with dimensional inspection reports, MTCs (EN 10204 3.1), and NDT certificates, meeting all project documentation requirements.
Surface Treatment: Hot-Dip Galvanizing for Extra Protection
All A420 WPL6 seamless fittings in this order received hot-dip galvanizing treatment to resist oxidation and corrosion during prolonged outdoor exposure.
The uniform silver coating not only enhances appearance but also provides an additional protective barrier against moisture, chemicals, and saline environments—a vital advantage for pipeline systems operating in cold climates like Russia.
Commitment to Quality and Global Supply
Haihao Group is recognized globally as a reliable manufacturer and exporter of ASME B16.9 butt weld fittings and low-temperature carbon steel components.
With over four decades of expertise in forging, heat treatment, and surface coating, the company ensures that every fitting meets the highest international standards for safety, precision, and performance.
This successful delivery once again demonstrates Haihao Group’s capability to provide A420 Gr.WPL6 seamless pipe fittings with galvanized finish for demanding oil, gas, and cryogenic pipeline applications worldwide.

