Screwed / Threaded Flange

Source Screwed / Threaded Flange from verified mills, manufacturers and stockists on MetalMitra. Options span all standard face types and pressure classes, and every order can ship with an EN 10204 3.1 certificate.

Screwed / Threaded Flanges feature an internally machined thread that mates with the external thread of a compatible pipe. This configuration can be useful for selected piping systems where welding is undesirable, impractical or restricted by the application.

These flanges are available in different materials, sizes, pressure classes, standards and face configurations for industrial requirements. Applications include process piping, fabrication, marine, chemical, petrochemical, oil & gas, sugar, defence and other industrial sectors.

Products can be supplied with Flat Face (FF), Raised Face (RF) and Ring Type Joint (RTJ) configurations depending on application and project requirements.

Key properties

• Threaded Connection — Internal threading allows connection with externally threaded pipe.
• No Direct Welding — Suitable for selected piping applications where flange welding is avoided.
• Multiple Pressure Classes — Available across specified ASME pressure classes and DIN ratings.
• Material Options — Stainless, carbon, alloy, duplex, nickel and copper alloy options.

Screwed / Threaded Flanges Specifications

Dimensions — ANSI, ASME, BS, DIN, EN and custom dimensions.

Standards — ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA and custom drawings.

Pressure Class — 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS and 2500 LBS.

DIN Ratings — ND-6, ND-10, ND-16, ND-25 and ND-40.

Size Range — 1/2″ (15 NB) to 48″ (1200 NB).

Flange Face — Flat Face (FF), Raised Face (RF) and Ring Type Joint (RTJ).

Applicable Standards

DIN Standards — DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638 and DIN 2673.

ANSI / ASME Standards — ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36 and ANSI B16.48.

BS Standards — BS 4504, BS 1560 and BS 10.

Flange Face Types

Flat Face — FF — Flat-face configuration for applications requiring a flat mating surface.

Raised Face — RF — Raised-face configuration commonly specified for industrial pressure piping systems.

Ring Type Joint — RTJ — Ring-type joint configuration for specified high-integrity sealing applications.

Materials & Grades

Stainless Steel — ASTM A182 / A240 F304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H and 904L.

Duplex & Super Duplex Steel — ASTM / ASME A/SA 182 F44, F45, F51, F53, F55, F60 and F61.

Alloy Steel — ASTM / ASME A/SA 182 & A387 F1, F5, F9, F11, F12, F22 and F91.

Carbon Steel — ASTM / ASME A/SA 105, A350, A181 LF2, A516 Gr.70, A36, A694 F42, F46, F52, F60, F65 and F706.

Nickel Alloys — Nickel 200/201, Monel 400/500, Inconel 600/601/625/800/825, Hastelloy C276 and Alloy 20.

Copper Alloys — Cu-Ni 90/10, Cu-Ni 70/30 and selected copper alloy UNS grades.

Detailed Material Selection

Threaded Connection Design

Internal Thread — The flange bore is internally threaded to engage with a compatible externally threaded pipe.

Machined Accuracy — Thread dimensions and flange geometry are controlled according to the specified standard or approved drawing.

Easy Installation — Threaded construction can simplify installation for suitable low-temperature and selected piping applications.

Applications & industries

• Oil & Gas
• Petrochemical Plants
• Chemical Processing
• Power Generation
• Refineries
• Marine Industry
• Sugar Industry
• Nuclear Applications
• Defence
• Process Piping
• Industrial Fabrication
• Utility Piping

Testing & documentation

Inspection and documentation for Screwed / Threaded Flange follow the applicable standard plus any extra requirements in your PO.

• Dimensional inspection
• Thread dimensional and visual inspection
• Material identification and traceability
• Visual and surface inspection
• Material Test Certificate documentation
• Heat number traceability where specified
• Third-party inspection support as required
• Custom drawings and technical documentation

Why source on MetalMitra

• Verified suppliers — Mills, manufacturers and stockists are reviewed by the MetalMitra team before they list.
• One RFQ, several quotes — Share size, grade and quantity once and compare offers side by side.
• Full traceability — Heat numbers, EN 10204 3.1 MTCs and third-party inspection on request.
• Delivered worldwide — Export-worthy packing and shipping to India, the Middle East, Africa, Europe and the Americas.

Request pricing

Post an RFQ for Screwed / Threaded Flange with your drawing or specification and receive quotes from verified suppliers.

Technical note: Values on this page are for reference. Always confirm against the governing standard, your purchase specification and the mill test certificate.