Carbon Steel Flange Suppliers Selection Guide
When searching for carbon steel flange suppliers near you, understanding material specifications, pricing factors, and dimensional standards ensures you get quality products at competitive prices.
ASTM A105 Flange Overview
ASTM A105 is the most common carbon steel material for forged pipe flanges, offering excellent mechanical properties and cost-effectiveness for general industrial applications.
Key Specifications
- Material: ASTM A105 forged carbon steel
- Классы давления: Class 150, 300, 600, 900, 1500, 2500
- Стандарты: ASME B16.5, ASME B16.47
- Диапазон температур: -20°F to 800°F (-29°C to 427°C)
- Tensile Strength: 70,000 psi minimum
ANSI Class 150 Flange Dimensions
| NPS | DN | OD (mm) | Bolt Circle (mm) | Болты | Weight (kg) |
|---|---|---|---|---|---|
| 1/2″ | 15 | 89 | 60 | 4 | 0.5 |
| 1″ | 25 | 108 | 79 | 4 | 0.8 |
| 2″ | 50 | 152 | 121 | 4 | 1.6 |
| 4″ | 100 | 229 | 191 | 8 | 3.8 |
| 6″ | 150 | 279 | 241 | 8 | 5.9 |
| 12″ | 300 | 483 | 432 | 12 | 18.2 |
PN16 Welded Flange Specifications
PN16 flanges are commonly used in European and Asian markets for water, air, and low-pressure process applications.
- Pressure Rating: 16 bar at 120°C
- Standard: EN 1092-1, GB/T 9115
- Material: P235GH, P245GH, Q235, 20#
- Типы: Plate flat weld, neck welded
Pricing Factors
Material Cost
- Raw steel prices fluctuate with market conditions
- ASTM A105 typically 20-30% cheaper than stainless
- Bulk orders receive significant discounts
Manufacturing Cost
- Forged flanges cost more than cut plate
- Custom sizes require additional machining
- Heat treatment and testing add to cost
Surface Treatment
- Black paint: Standard, lowest cost
- Galvanized: +15-20% cost
- Epoxy coating: +25-30% cost
Wholesale and Bulk Order Benefits
For large diameter flange fabrication and bulk orders:
- MOQ: Typically 10-50 pieces per size
- Volume discount: 10-25% for large quantities
- Custom drilling patterns available
- Lead time: 15-30 days for standard items
Сертификаты качества
- CE Certification: Required for European export
- PED 2014/68/EU: Pressure Equipment Directive
- ISO 9001: Quality management system
- MTR: Material test report per heat
Общие приложения
- Water treatment plants
- HVAC systems
- Fire protection piping
- Oil and gas pipelines
- Chemical process piping
- Производство электроэнергии
How to Choose a Reliable Supplier
- Verify manufacturing capabilities and certifications
- Request material test reports
- Check production lead times
- Review quality control procedures
- Compare pricing including shipping
- Ask about after-sales support
Songhai Flange supplies ASTM A105 carbon steel flanges with CE certification for global export. Contact us for competitive wholesale pricing and custom fabrication services.
WhatsApp: +86-18658777855
Электронная почта: 1007788887@qq.com
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