Forged Carbon Steel Flange

QS Flange: Jiangsu Iron Flange

Forged carbon steel flanges in six types, 150LB to 2500LB and 1/2 to 24 inch to ASME B16.5, traceable from billet inspection to final NDT.

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One-Minute Overview

Forged carbon steel flange in six types, from slip-on through to socket weld.
ASME B16.5 dimensions, 150LB to 2500LB, sizes 1/2 to 24 inch.
RF or FF sealing faces; threaded versions come with NPT or BSP threads.
Each lot is traceable from billet inspection through to final NDT.

This forged carbon steel flange line covers the six types a piping specification usually asks for: slip-on, weld neck, threaded, blind, lap joint and socket weld. All are made to ASME B16.5, in pressure classes from 150LB to 2500LB and sizes from 1/2 to 24 inch, with raised face or flat face sealing. Water distribution, oil gathering and gas transmission are the everyday duties.

Name: Forged Carbon Steel Flange
Types: SO, WN, Threaded, Blind, LJ, SW
Size: 1/2-24 Inch
Pressure: 150LB-2500LB
Material: Carbon Steel
Flange Face: RF, FF
Thread: NPT or BSP
Standard: ASME B16.5
Process Method: Forged

Choose by how the flange meets the pipe. Slip-on and socket weld take single-sided fillet welds; weld neck takes a double-sided butt weld; threaded versions screw on and are supplied with NPT or BSP threads. A blind closes a joint, a lap joint backs a stub end, and a socket weld suits small bore work where a full penetration weld is awkward. Class and face follow the joint, not the flange. 150LB and 300LB cover most plant water and utility lines, while 600LB and above appear on oil gathering and gas transmission work, where 2500LB may be specified at the wellhead or a compressor station. RF is the default against a raised face mating flange; FF is used where a flat face joint is required. Every lot is checked from raw billet inspection through to final NDT, so the material and the test record travel with the flange.

FAQ

Q1. Which types are available in this carbon steel range?

Six: slip-on, weld neck, threaded, blind, lap joint and socket weld. All are forged carbon steel to ASME B16.5, in classes from 150LB to 2500LB and sizes from 1/2 to 24 inch, with RF or FF faces. The threaded type is supplied with NPT or BSP threads.

Q2. How is each type welded or joined?

Slip-on and socket weld flanges take single-sided fillet welds. Weld neck flanges take double-sided butt welds. Threaded flanges need no welding at all: they are screwed on with NPT or BSP threads and a sealant suited to the medium. Blind and lap joint types follow the joint preparation of their mating parts.

Q3. What comes with the material and test records?

Each lot is traceable from raw billet inspection through to final NDT, so the heat, the chemistry and the test result can be tied to the flanges you receive. That matters on gas transmission and refinery work, where a certificate that cannot be traced back to the billet is worth very little.

Q4. How long does a normal order take to produce?

Standard sizes are typically ready within 30 days, and in-stock items ship immediately. Larger or custom orders get a confirmed date per order, because the schedule depends on quantity, material, the bolt pattern you specify, and how busy production is at the moment you order.

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