Product Overview

Our ASTM A182 F51/F53 ANSI B16.5 Class 150 Carbon Steel Threaded Flanges are precision-forged and engineered for high-performance piping systems. Designed according to ANSI B16.5 standards and manufactured from ASTM A182 F51 (Duplex) and F53 (Super Duplex) grades, these flanges provide exceptional strength, superior corrosion resistance, and reliable leak-proof connections.

The threaded (screwed) connection allows for quick installation without welding, making them ideal for systems requiring frequent assembly and disassembly. The combination of duplex stainless steel grades and carbon steel body ensures both durability and cost efficiency for demanding industrial applications.

Product Specifications

Key Features

• Manufactured in accordance with ANSI B16.5 and ASTM A182 standards.

• Made from Duplex (F51) and Super Duplex (F53) stainless steels for superior corrosion resistance.

• Threaded bore design allows installation without welding, reducing labor time and costs.

• Precision-forged for tight sealing and long service life.

• Suitable for Class 150 pressure rating.

• Available in Raised Face (RF) and Flat Face (FF) types.

• Ideal for harsh environments and high-salinity conditions such as offshore and chemical plants.

Typical Applications

• Offshore oil & gas platforms

• Petrochemical and chemical processing plants

• Water treatment and desalination plants

• Pulp and paper industries

• Shipbuilding and marine engineering

• High-pressure and corrosive piping systems

Company Introduction — Hebei Cangtie Industrial Co., Ltd

Hebei Cangtie Industrial Co., Ltd specializes in manufacturing and exporting premium pipe fittings and flanges, including threaded, forged, and welded types in carbon steel, stainless steel, and alloy steel.

Located in Yanshan Economic Development Zone, Cangzhou City, Hebei Province, China, our factory is equipped with advanced forging and machining equipment, ensuring strict quality control and high precision.

With over 10 years of experience, we produce according to ASTM, ASME, DIN, JIS, EN, and GB standards, and provide OEM/ODM customization for global customers.

Contact Us

📌 Contact Person: Hudson Liu
📞 Mobile / WhatsApp: +86 157 3370 8805
📧 Email: hudson@cangtiepipe.com
🌐 Website: https://ctflange.com/
🏭 Factory Address: Yanshan Economic Development Zone, Yanshan County, Cangzhou City, Hebei Province, China

Frequently Asked Questions (FAQ)

1. Are you a manufacturer or trading company?
We are a manufacturer with our own factory located in Hebei, China, specializing in stainless steel, carbon steel, and alloy steel flanges.

2. What materials do you offer?

• Stainless Steel: 304, 304L, 316, 316L, 321, Duplex F51, Super Duplex F53

• Carbon Steel: ASTM A105, ASTM A350 LF2, Q235, Q345, etc.

• Alloy Steel: ASTM A182 F11, F22, F5, etc.

3. Which standards do your products comply with?
ASME B16.5, ANSI, ASTM, DIN, JIS, EN, GB — with third-party inspection available.

4. Do you support OEM/ODM customization?
Yes, we provide custom machining, coating, marking, and packaging based on your drawings.

5. What is your minimum order quantity (MOQ)?
MOQ is typically 1 piece for standard items; customized parts may vary.

6. Do you provide free samples?
Yes, free samples for standard sizes are available; buyers cover shipping cost.

7. What is your delivery time?

• In-stock: 3–5 working days

• Bulk/custom orders: 10–25 working days

8. How do you ensure product quality?
We perform full inspection: raw material verification, dimensional checks, pressure/leak tests, and surface finish inspection. Third-party testing is available upon request.