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Cast Iron Flange Chinese Factory
QS Flange: Cast Iron Flange Chinese Factory
Name: Cast Iron Flange Chinese Factory
Material: Ductile Iron
Standard: ASME B16.42
Pressure: 150LB/ 300LB
Size: 1/2 to 24 Inch
Process Method: Casting
Surface: Black
Face: FF
Price: USD 2.5 - 5.5/ Kg
MOQ: 10kg
Customization: yes
Delivery time: 7-30 Day
Usage: Used in Water treatment systems, HVAC, Petrochemicals and Construction industries, etc
Material: Ductile Iron
Standard: ASME B16.42
Pressure: 150LB/ 300LB
Size: 1/2 to 24 Inch
Process Method: Casting
Surface: Black
Face: FF
Price: USD 2.5 - 5.5/ Kg
MOQ: 10kg
Customization: yes
Delivery time: 7-30 Day
Usage: Used in Water treatment systems, HVAC, Petrochemicals and Construction industries, etc
Quantity
As a senior flange engineer, I present our Cast Iron Flange, manufactured in our Chinese factory using premium ductile iron and strictly following ASME B16.42. Designed for Class 150 and 300 pressure systems, this flange covers NPS ½ to 24 inches, serving water treatment, HVAC, petrochemical, and construction sectors. Its cast structure, black anti-rust coating, and flat-face (FF) configuration ensure robust sealing and long service life even under aggressive media.
Key Dimensional Data
- Outside Diameter (OD) – Ranges from 89 mm (½", Class 150) to 819 mm (24", Class 300), with Class 300 always slightly larger for higher strength.
- Outside Diameter (OD) – Ranges from 89 mm (½", Class 150) to 819 mm (24", Class 300), with Class 300 always slightly larger for higher strength.
- Bolt Circle Diameter (BCD) – Precisely machined for bolt alignment, e.g., 60.3 mm (½", Class 150) up to 577.8 mm (24", Class 300).
- Bolt Holes – Quantity and diameter scale with size and rating: ½"uses 4 holes of 15.9 mm; 24"Class 300 uses 24 holes of 38.1 mm.
- Flange Thickness – Optimized for pressure integrity, from 11.1 mm (½", Class 150) to 41.3 mm (24", Class 300).
Performance & Advantages
The ductile iron matrix delivers excellent tensile strength and impact toughness, while the FF face ensures gasket compatibility and leak-tight joints. Our Chinese factory employs advanced casting lines and strict quality control, offering customized solutions (size, drilling, coating) with MOQ just 10 kg. Price ranges USD 2.5–5.5/kg, delivery 7–30 days – a cost-effective choice for both standard and engineered projects.
The ductile iron matrix delivers excellent tensile strength and impact toughness, while the FF face ensures gasket compatibility and leak-tight joints. Our Chinese factory employs advanced casting lines and strict quality control, offering customized solutions (size, drilling, coating) with MOQ just 10 kg. Price ranges USD 2.5–5.5/kg, delivery 7–30 days – a cost-effective choice for both standard and engineered projects.
Why Choose This Flange
Compared with forged steel, our Cast Iron Flange provides superior damping and corrosion resistance for medium‑pressure applications, reducing lifecycle costs. The combination of ASME compliance, factory-direct supply, and flexible production makes it a trusted component in global pipeline networks.
Compared with forged steel, our Cast Iron Flange provides superior damping and corrosion resistance for medium‑pressure applications, reducing lifecycle costs. The combination of ASME compliance, factory-direct supply, and flexible production makes it a trusted component in global pipeline networks.
FAQ
1. Can this Cast Iron Flange be used for gas pipelines?
– Yes, it meets ASME B16.42 for gaseous and liquid services within rated pressures; ensure gasket selection matches the medium.
1. Can this Cast Iron Flange be used for gas pipelines?
– Yes, it meets ASME B16.42 for gaseous and liquid services within rated pressures; ensure gasket selection matches the medium.
2. What is the minimum order quantity from your Chinese factory?
– MOQ is only 10 kg, allowing small-batch trials or large-scale bulk orders.
3. How do Class 150 and Class 300 differ in actual installation?
– Class 300 has thicker flanges, larger OD/BCD, and more bolt holes, providing higher pressure capacity; bolt patterns are not interchangeable.
4. Is surface treatment customizable beyond black paint?
– Yes, our Chinese factory offers galvanizing, epoxy, or other coatings upon request, with corresponding lead‑time adjustments.
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