Quality Control
Quality Management System
Comprehensive Quality Control Process to Ensure Every Product Meets Standards
Hebei Hengyuan Industrial Co., Ltd strictly implements the ISO 9001:2015 quality management system, establishing a comprehensive quality control system from raw material procurement to manufacturing, quality testing, and warehousing. Our quality control department operates independently, equipped with professional technical personnel and advanced testing equipment to ensure every batch of products meets national standards and industry specifications.
Our quality control system mainly includes the following aspects:
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Raw Material Quality Control
Strict inspection of all incoming materials to ensure they meet design requirements, establishing qualified supplier management system
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Production Process Control
Checkpoints at key processes throughout production, real-time monitoring of manufacturing parameters to ensure consistent product quality
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Finished Product Inspection
Comprehensive inspection of each batch of products, including appearance, dimensions, coating thickness, adhesion, mechanical properties, etc.
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Quality Tracking System
Product batch management and quality traceability mechanism, with each batch traceable back to raw material lots and production processes
Quality Policy
We adhere to the quality policy of "Quality First, Customer First, Continuous Innovation, Pursuit of Excellence" to provide customers with high-quality, reliable pipeline products and professional technical services.
Testing Equipment & Capabilities
Advanced Testing Equipment, Comprehensive Testing Capabilities
Physical Property Testing
- • Tensile Strength Testing
- • Flattening Test, Bending Test
- • Hardness Testing
- • Impact Toughness Testing
- • Dimension and Wall Thickness Precision Testing
Coating Performance Testing
- • Coating Thickness Testing
- • Adhesion Testing
- • Coating Continuity Testing
- • Impact Resistance Testing
- • Corrosion Resistance Testing
Special Performance Testing
- • Hydrostatic Pressure Testing
- • High and Low Temperature Cycle Testing
- • Wear Resistance Testing
- • Aging Test
- • Sanitary Performance Testing
Standards & Certifications
Compliance with Major Standards, Multiple Certifications
Implementation Standards
National Standards (GB)
GB/T 5135.20-2010: "Automatic Sprinkler Systems Part 20: Coated Steel Pipes"
GB/T 37594-2019: "Technical Specification for Anti-Ultraviolet Three Layer Fusion Bonded Powder Coating of Steel Pipeline"
GB/T 42541-2023: "Coated Steel Pipes for Gas Pipelines"
GB/T 23257-2017: "Polyethylene Coating for Buried Steel Pipelines"
GB/T 39636-2020: "Technical Specification for Fusion Bonded Epoxy Powder Coating of Steel Pipeline"
GB/T 28897-2021: "Steel-Plastic Composite Pipes and Fittings for Fluid Transportation"
GB/T 8163-2018: "Seamless Steel Pipes for Fluid Transportation"
GB/T 3091-2015: "Welded Steel Pipes for Low Pressure Fluid Transportation"
GB/T 9711-2023: "Steel Pipes for Pipeline Transportation Systems in Petroleum and Natural Gas Industries"
Industry Standards
CJ/T 120-2016: "Plastic-Coated Steel Pipes for Water Supply" (Construction Industry)
SY/T 0315-2013: "Technical Specification for Fusion Bonded Epoxy Powder External Coating of Steel Pipeline" (Oil and Gas Industry)
MT/T 181-1988: "Safety Performance Testing Specification for Plastic Pipes Used in Coal Mines" (Coal Industry)
CDP-S-PC-AC-008-2009/A: "Epoxy Powder (for Three-Layer PE)" (Industry Standard)
SY/T 0442-2018: "Technical Standard for Fusion Bonded Epoxy Powder Internal Anti-Corrosion Coating of Steel Pipeline" (Oil and Gas Industry)
SY/T 6717-2016: "Technical Requirements for Internal Coating of Tubing and Casing" (Oil and Gas Industry)
International Standards
ISO 21809-2 (ISO): "Petroleum and Natural Gas Industries - External Coatings for Buried or Submerged Pipelines"
DIN 30670 (DE): "Polyethylene Coatings of Steel Pipes and Fittings"
CSA Z245.20-22 (CA): "External Fusion Bond Epoxy Coating for Steel Pipe"
NF A 49-710 (FR): "Three-Layer Polyethylene External Coating"
AWWA C213a (US): "Fusion-Bonded Epoxy Coating for the Interior and Exterior of Steel Water Pipelines and Fittings"
GS EP COR 222 (UK): "Fusion Bonded Epoxy Coating for Pipeline"
Quality Certifications
ISO 9001:2015
Quality Management System
ISO 14001:2015
Environmental Management System
ISO 45001
Occupational Health and Safety
Coal Mine Products
Safety Mark Certificate