Carbon Steel Flanges

High-Integrity Carbon Steel Flanges

Raised-face, flat-face, and RTJ flanges stocked across pressure classes with rapid mill-run support, export crating, and full MTC traceability.

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150#–2500# + API 5K / 10K

1/8"–36" Standard sizes

RF / FF / RTJ Face types

Capabilities at a Glance

Broad flange portfolio covering power, hydrocarbons, marine, and utilities with quick-turn mill support.

Pressure Ratings

Full suite of ASME & API classes.

150#
300#
600#
900#
1500#
2500#
API 5K / 10K

Face & Bore

Raised Face (RF)
Flat Face (FF)
Ring Type Joint (RTJ)
Custom bores/schedules

Size Coverage

From small-bore to large-bore process flanges.

1/8" – 36" standard
Larger diameters on request
Matching schedules per ASME B16.5 / B16.47

Configurations & Availability

Stock and mill-runs for core and specialty configurations with export packing.

Core Flanges

Pipe & Process

Weld Neck
Slip-On
Blind
Lap Joint

Connection Types

Threaded
Socket Weld
Reducing

1/8" – 36"
RF / FF / RTJ
Standard schedules & custom bores

Specialty & Measurement

Flow & Isolation

Orifice Flanges
Spectacle Blinds / Fig-8
Spades & Spacers

High-Pressure & Custom

API-rated sets
Large OD specials
Project-specific drilling

Hard-to-find sizes
Export-ready packing

Grades & Specifications

Certified materials with full traceability and MTCs.

Primary Grades

Material	Specification
Carbon Steel	A105 / SA105
Carbon Steel	A516 / SA516