Raised Face Flange Stockist and Mild Steel Bulk Order Guide
Finding reliable raised face flange stockists with competitive pricing for bulk orders is essential for project procurement. This guide covers stock availability, bulk pricing, and cost-saving strategies.
Raised Face Flange Overview
Raised face (RF) is the most common flange facing type in industrial applications:
RF Face Dimensions
- Class 150 and 300: 1.6mm (1/16 inch) raise
- Class 400 and higher: 6.4mm (1/4 inch) raise
- Зазубренная поверхность: 3,2-6,3 мкм Ra
- Concentric or spiral serrations
Gasket Compatibility
- Non-asbestos sheet gaskets
- Spiral wound gaskets
- Graphite gaskets
- PTFE gaskets
- Rubber gaskets for low pressure
Cheap Mild Steel Flange Bulk Order
Mild steel flanges offer the most cost-effective solution for non-critical applications:
Material Grades
| Стандарт | Класс | Region |
|---|---|---|
| Chinese | Q235 | China |
| Japanese | SS400 | Japan/Asia |
| European | S235JR | Europe |
| American | A36 | USA |
Cost Comparison by Material
- Mild steel (Q235/SS400): Base price 100 percent
- Carbon steel (A105): Plus 15-20 percent
- Stainless 304: Plus 60-80 percent
- Stainless 316: Plus 100-120 percent
Bulk Order Pricing Tiers
| Quantity | Discount | Преимущества |
|---|---|---|
| 10-50 pieces | 5-10 percent | Standard packaging |
| 50-100 pieces | 10-15 percent | Priority production |
| 100-500 pieces | 15-25 percent | Free inspection |
| 500 plus pieces | 25-35 percent | Dedicated support |
DN100 Flange Supplier Specifications
DN100 (NPS 4) is one of the most commonly ordered flange sizes:
ASME B16.5 Class 150
- Outside Diameter: 229mm
- Bolt Circle: 191mm
- Bolt Holes: 8 times 19mm
- Flange Thickness: 20.6mm
- Weight: Approximately 3.8 kg
EN 1092-1 PN16
- Outside Diameter: 220mm
- Bolt Circle: 180mm
- Bolt Holes: 8 times 18mm
- Flange Thickness: 20mm
- Weight: Approximately 3.5 kg
Flange with CE Certification for Export
European exports require comprehensive certification:
Требования к сертификации
- CE Marking mandatory
- PED 2014/68/EU compliance
- Notified Body involvement
- Техническая документация
- Declaration of Conformity
Testing Requirements
- Material verification per heat
- Контроль размеров
- Pressure testing
- Non-destructive testing
Stock Availability by Type
Commonly Stocked Items
- Carbon steel A105: All sizes DN15-DN600
- Stainless 304/316: DN15-DN300
- Mild steel Q235: DN15-DN400
- Blind flanges: All common sizes
Made to Order
- Alloy steel flanges
- Duplex and super duplex
- Large diameter DN700 plus
- Special pressure classes
- Custom drilling patterns
Carbon Steel Flange Suppliers Selection
Key Selection Criteria
- Manufacturing capabilities and capacity
- Quality certifications (ISO, CE, PED)
- Прослеживаемость материалов (имеется MTR)
- Production lead times
- Export experience
- Послепродажная поддержка
Red Flags to Avoid
- No material test reports
- Unrealistically low prices
- No quality certifications
- Poor communication
- No references or reviews
Stainless Steel Flange Manufacturers
Global manufacturing regions for stainless flanges:
By Country
- China: Largest producer, competitive pricing
- India: Growing capacity, good quality
- Italy: Premium quality, higher cost
- USA: Domestic supply, quick delivery
- Japan: High precision, excellent quality
Shipping and Logistics
- Sea freight: 20-35 days to major ports
- Air freight: 5-7 days for urgent orders
- Rail freight: 15-20 days to Europe
- Container optimization available
Payment Terms
- T/T: 30 percent deposit, 70 percent before shipment
- L/C at sight for large orders
- Trade Assurance available
- Flexible terms for repeat customers
Songhai Flange is a professional raised face flange stockist with CE certification for export. We offer competitive pricing for mild steel bulk orders and maintain stock of common sizes for quick delivery.
WhatsApp: +86-18658777855
Электронная почта: 1007788887@qq.com

WhatsApp: +86-18658777855
Электронная почта: 1007788887@qq.com

Вам также может понравиться
ASME B16.5 Flange Guide: 2025 Latest Edition, Scope, Ratings and Dimensions
A practical ASME B16.5 guide covering the 2025 latest edition, NPS 1/2 through NPS 24 scope, flange classes, dimensions, materials, markings, testing and differences from ASME B16.42.
Weld Neck Flange Guide: Socket Weld vs Weld Neck Flange, Uses, Standards and Selection
A professional weld neck flange guide covering socket weld vs weld neck flange differences, advantages, standards, dimensions, materials, installation and quotation requirements.
Casting vs Forging: How to Choose the Right Manufacturing Process for Industrial Flanges
Casting vs forging explained for industrial flange buyers: compare grain flow, mechanical properties, defect risks, cost, standards, inspection and application suitability before specifying a flange.