Steel Materials
Steel Equal Angles Hot Rolled
Steel Equal Angles Hot Rolled is a group of 81 IMPA-coded items (codes 670601–671583) under Steel Materials in the Metal Sheets, Bars, Etc. section (IMPA 67). All of them are priced per lgh. Every item in the list is steel. The list runs through 12 metric sizes from 20×3 mm to 200×15 mm.
Buying guide
Steel equal angles are hot-rolled L sections with both legs the same width. The group lists 27 sizes from 20 × 20 × 3 mm to 200 × 200 × 20 mm, each in 5.5 m, 6 m and 20 ft lengths. The size reads leg × leg × thickness, so 75 × 75 × 6, 75 × 75 × 9 and 75 × 75 × 12 are the same outline in three thicknesses. Unequal angles are a separate group.
On board, angle is the everyday section for the ship’s own fabrication and repair: brackets, frames for racks and shelves, pipe and cable supports, guards, stiffeners and small foundations. The chief engineer or the superintendent orders it for a planned job, often with channels and flat bar.
How to specify it
Give all three dimensions, the length per piece and the number of pieces. The length changes the IMPA code, and a 20 ft bar is about 6.1 m, not 6 m. JIS G 3192 is the Japanese standard for the dimensions, shape, mass and tolerances of hot-rolled sections. It is based on ISO 657-1 for equal-leg angle dimensions and ISO 657-5 for angle tolerances, so "to JIS G 3192" fixes the profile and its tolerances.[1]
JIS G 3192 leaves its application to each product standard, so the size standard alone does not say what steel you get. Name the material standard and grade as well, for example a grade of JIS G 3101, rolled steel for general structure, which covers steel for bridges, ships and rolling stock. Ask for a mill certificate with the delivery.[1][2]
Tell the supplier how the ship can take long bars (crane, by hand, or cut to length) before they quote.
Rules and certificates
Steel for hull construction is a class matter. IACS UR W11 covers weldable normal and higher-strength hot-rolled plates, wide flats, sections and bars for hull construction, sections up to 50 mm thick. It provides four grades of normal-strength steel, A, B, D and E, and requires the material to come from works approved by the classification society for that type and grade.[3]
A general-structural angle is not a substitute where the drawing calls for a class hull-steel grade. Agree the grade and certificate with class before ordering steel for a structural repair.[3][2]
Questions buyers ask
- What does 50 × 50 × 6 mean on a steel angle?
- Two legs of 50 mm and a thickness of 6 mm. The catalogue also lists 50 × 50 × 4, so always give the thickness.
- Can I use this angle for a hull structural repair?
- Only if it is a hull-structural grade from a class-approved mill with the certificate class asks for. IACS UR W11 sets those requirements for sections used in hull construction.
Sources
Published by Sherif Awad, founder of GeoMarineHub — in ship supply since 1990, a family business since 1981 (45 years). Last checked .
At a glance
Part of Metal Sheets, Bars, Etc. (IMPA section 67): Stock steel, stainless, aluminium, brass and copper — plates, sheets, bars, angles, flats and mesh.
It is one of 20 groups under Steel Materials; the others include Barbed Wire, Carbon Tool Steel Rounds, Iron Wire, Piano Wire Steel, Steel Bleaching Plates and 14 more.
Post the ones you need as a requirement and verified suppliers activated at your port bid on them — sealed, so nobody sees another bid.
- Items
- 81
- IMPA codes
- 670601–671583
- Priced
- per lgh
- Materials
- steel
- Sizes
- 20×3 mm – 200×15 mm
Items
Also under Steel Materials
Most requested sections