Threaded Flange (Screwed Flange)

1️⃣ Product Introduction

VikTech Fittings is a leading manufacturer, exporter, and supplier of high-quality Threaded Flanges (Screwed Flanges) manufactured in compliance with ASME standards including ASME B16.5, along with EN and DIN specifications.

Threaded Flanges are designed with internal threads that match the external threads of the pipe, allowing connection without welding. This makes them highly suitable for applications where welding is not permitted, hazardous environments exist, or frequent dismantling is required.

Threaded Flanges are commonly used in low to moderate pressure piping systems, especially in explosive areas and small-diameter pipelines.

2️⃣ Technical Specifications

Product Name                       Threaded Flange (Screwed Flange)

Standards                             ASME B16.5, EN 1092-1, DIN

Size Range                          ½″ (DN15) to 24″ (DN600)

Pressure Class                     Class 150, 300, 600, 900, 1500, 2500

Facing Types                         RF, FF, RTJ

Thread Type                          NPT / BSPT / BSPP (On Request)

Manufacturing                        Forged

Certification                           EN 10204 3.1 / 3.2, IBR (On Request)

3️⃣ Available Material Grades

▶ Carbon Steel (CS)

• ASTM A105

• ASTM A350 LF2

• ASTM A694 F42 / F52

▶ Stainless Steel (SS)

• ASTM A182 F304 / 304L

• F316 / 316L

• F321

• F347

▶ Alloy Steel

• ASTM A182 F11

• F22

• F91

▶ Duplex & Super Duplex

• F51 (UNS S31803)

• F60 (UNS S32205)

▶ Nickel Alloys (On Request)

• Inconel 625

• Monel 400

• Hastelloy C276

4️⃣ Size & Pressure Range

• Size: ½″ to 24″

• Pressure Ratings: Class 150 – 2500

• Suitable for small to medium bore systems

• Custom threading available

Threaded flanges are typically used in lower temperature and non-critical high-pressure applications.

5️⃣ Standards & Compliance

• ASME B16.5

• EN 1092-1

• DIN Standards

• ISO Certified Manufacturing

• IBR Approved (On Request)

• PED Compliance (On Request)

6️⃣ Design & Features

• Internal threaded bore

• No welding required

• Easy installation & dismantling

• Suitable for hazardous areas

• Ideal for maintenance-friendly systems

• Cost-effective for small bore piping

Dimensional accuracy and thread precision maintained as per standard tolerances.

7️⃣ Manufacturing & Heat Treatment

• Closed die forging

• CNC machining

• Internal threading (NPT / BSP)

• Facing & drilling

• Heat treatment (if required)

• Final inspection & marking

8️⃣ Pressure & Temperature Ratings

MaterialTemperature RangePressure ClassCarbon SteelUp to 425°CClass 150 – 2500Stainless SteelUp to 870°CClass 150 – 2500Alloy SteelUp to 590°CClass 300 – 2500DuplexUp to 300°CModerate pressure

(Actual ratings depend on thread type & application.)

9️⃣ Testing & Quality Control

✔ Visual & Dimensional Inspection
✔ Thread Gauge Inspection
✔ PMI Testing
✔ Ultrasonic Testing
✔ Hardness & Tensile Testing
✔ Third Party Inspection – TUV / BV / SGS
✔ EN 10204 3.1 Certification
✔ Heat Number Traceability

🔟 Applications & Industries

• Oil & Gas Pipelines

• Fire Fighting Systems

• Compressed Air Systems

• Hydraulic Systems

• Chemical Plants

• Water & Utility Lines

• Hazardous Areas (No Welding Zones)

Threaded Flanges are preferred where welding is not feasible or allowed.

1️⃣1️⃣ Surface Finish Options

• Anti-Rust Oil

• Black Coated

• Hot Dip Galvanized

• FBE Coating

• Zinc Coated

1️⃣2️⃣ Packing & Marking

• Wooden crates / pallets

• Bubble wrapping

• Plastic face protectors

• Marking: Size, Grade, Class, Heat No., Standard

• Thread type marking (NPT/BSP)

• Seaworthy export packing

1️⃣3️⃣ Why Choose VikTech Fittings?

• Precision threading accuracy

• High pressure capability

• Reliable forging quality

• Fast dispatch

• Competitive pricing

• Export-ready documentation

• Strong project support

1️⃣4️⃣ SEO Keywords

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