Haihao Group Supplies HG/T 20592 Slip-On Flanges and GB/T 12459 Pipe Fittings for Russian Industrial Project
Haihao Group recently completed the production and shipment of a batch of HG/T 20592 slip-on flanges and GB/T 12459 pipe fittings for an industrial customer in Russia. The order included slip-on flanges, blind flanges, elbows, equal tees, concentric reducers, and eccentric reducers manufactured from 20# carbon steel material.
These products were produced according to strict dimensional and quality requirements for industrial piping systems and prepared for export with blasting and magnetic particle inspection.
Product Overview
The shipment mainly covered:
- HG/T 20592 slip-on flanges
- RF blind flanges
- GB/T 12459 carbon steel elbows
- Equal tees
- Concentric reducers
- Eccentric reducers
All products were manufactured using 20# carbon steel material and inspected before shipment to ensure compliance with customer specifications.
HG/T 20592 Slip-On Flanges for Industrial Piping Systems
The supplied HG/T 20592 slip-on flanges were manufactured in RF Type B design with PN16 pressure rating. These flanges are widely used in industrial pipeline systems because of their easy installation, stable sealing performance, and cost efficiency.
Slip-on flanges are commonly selected for:
- Water treatment systems
- Chemical plants
- Industrial utility pipelines
- HVAC piping
- General pressure piping systems
The flange thickness complied with standard requirements, while A105 material properties were applied according to customer specifications.
GB/T 12459 Carbon Steel Pipe Fittings
The project also included a full range of GB/T 12459 carbon steel pipe fittings, including elbows, tees, concentric reducers, and eccentric reducers.
These fittings are designed for butt welding pipeline systems and provide reliable flow transition performance.
Main Advantages
- Good weldability
- High dimensional accuracy
- Stable mechanical properties
- Suitable for medium-pressure piping
- Excellent compatibility with industrial steel pipes
The GB/T 12459 pipe fittings supplied by Haihao Group are widely used in oil and gas, petrochemical, power plant, and industrial construction projects.
Surface Treatment and Quality Inspection
To improve product surface quality and transportation reliability, all fittings underwent:
- Sand blasting treatment
- Magnetic particle inspection
- Visual inspection
- Dimensional verification
The blasting process helps remove surface impurities and improves coating adhesion, while magnetic particle testing ensures there are no surface cracks or defects before shipment.
Strict quality control is an important reason why international customers continue choosing Haihao Group as their long-term piping products supplier.
Reliable Export Packaging for Russia
All flanges and pipe fittings were packed according to export seaworthy standards to ensure safe transportation from China to Russia.
The packing process included:
- Wooden cases
- Protective wrapping
- Size marking
- Material identification labels
Proper export packing helps reduce transportation damage and improves project installation efficiency after delivery.
Why Customers Choose Haihao Group
Haihao Group has extensive experience manufacturing and exporting:
- Carbon steel flanges
- Butt weld pipe fittings
- Stainless steel fittings
- Forged fittings
- Industrial piping components
The company supports international projects with:
- Strict quality control
- Fast production schedules
- Customized manufacturing
- Technical documentation
- Worldwide export service
From HG/T flange standards to ASME, EN, and GB piping products, Haihao Group continues providing reliable solutions for global industrial customers.
FAQ
What is HG/T 20592?
HG/T 20592 is a Chinese industrial flange standard widely used for pressure piping systems in chemical and industrial projects.
What are slip-on flanges used for?
Slip-on flanges are commonly used in low and medium pressure piping systems because they are easy to align and weld during installation.
What is GB/T 12459?
GB/T 12459 is a Chinese standard for butt weld steel pipe fittings including elbows, reducers, and tees.
Why are eccentric reducers used in pipelines?
Eccentric reducers help prevent fluid accumulation and are commonly used in horizontal piping systems.
Does Haihao Group provide customized piping products?
Yes. Haihao Group provides customized flanges and pipe fittings according to customer drawings, project requirements, and international standards.
Contact Haihao Group
Looking for a reliable supplier of HG/T 20592 slip-on flanges and GB/T 12459 pipe fittings?
Contact Haihao Group today for:
- Fast quotation
- Technical support
- Project solutions
- Export service
- Customized production
Haihao Group supports industrial piping projects worldwide with reliable quality and professional service.

