Collection: Flat Bar
Steel Flat Bar – A36 Hot Rolled | Cut to Size
Our A36 hot-rolled steel flat bar is made from ASTM A36 structural steel, known for strength, durability, and weldability. It’s a versatile choice for construction, fabrication, and DIY projects.
Flat bar is a rectangular steel shape with a smooth finish and dimensional accuracy, ideal for bracing, supports, base plates, brackets, frames, rails, repairs, and home projects.
We stock thicknesses from 1/8" to 1/2", widths from 1" to 6", and lengths up to 20 feet. Cut-to-size service ensures you get the exact dimensions you need.
Warrenton Steel offers premium A36 steel, fast custom cuts, competitive pricing, nationwide shipping, and reliable service. Order online or contact us at 636-456-8400 or Sales@WarrentonSteel.com
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4" x 4" x 1/4" Steel Shim Plate - A36 Welding Coupons - 0.25” Base Plates - Heavy Duty Hot Rolled Carbon Steel for Fabrication - Bulk Discount Value Packs
Vendor:Warrenton Steel ShopRegular price From $2.00 USDRegular price$4.00 USDSale price From $2.00 USDSale -
3" x 3" x 1/8" Steel Shims - Post Base Plates - 11ga Welding Test Practice Coupons - A36 Hot Rolled Carbon Steel - 0.125” Steel for Fabrication - Bulk Discount Value Packs
Vendor:Warrenton Steel ShopRegular price From $1.00 USDRegular price$2.00 USDSale price From $1.00 USDSale -
2" x 2" Steel Shim Plates - A36 Hot Rolled Steel - Weld Test Practice Coupons - Wedge Tool - 1/8” - 1/4” - 5/16” - 3/8” - 1/2” - 3/4”
Vendor:Warrenton Steel ShopRegular price From $0.95 USDRegular price -
4" x 4" x 1/8" Carbon Steel Shim Base Plate - 11ga Welding Test Training Practice Coupons - A36 Hot Rolled 0.125” Steel Plate - Welding Kit - Bulk Discounts Value Packs
Vendor:Warrenton Steel ShopRegular price From $1.25 USDRegular price$7.50 USDSale price From $1.25 USDSale -
6" x 6" x 1/4" Steel Base Plates - Welding Practice - A36 Hot Rolled 0.25” Shim Plate Sheet - Heavy Duty Steel for Fabrication - Bulk Discount Value Packs
Vendor:Warrenton Steel ShopRegular price From $10.00 USDRegular price$20.00 USDSale price From $10.00 USDSale -
5” x 5” x 1/8" Steel Shims Plates - A36 Hot Rolled 11ga Post Base Plate - 0.125” Steel - Welding Practice - Bulk Discounts
Vendor:Warrenton Steel ShopRegular price From $3.00 USDRegular price$15.00 USDSale price From $3.00 USDSale -
2” x 1/8” Steel Flat Bar - A36 Hot Rolled Carbon Steel Plate Strip 11ga - By The Inch - 0.125” Welding Test Practice Coupons - Steel Plate For Fabrication - Flat Stock - Steel Flats - Bar Stock
Vendor:Warrenton Steel ShopRegular price From $0.50 USDRegular price -
12" x 12" x 1/8" Steel Plate - A36 Hot Rolled Carbon Steel - 11ga Post Base Plates - Welding Practice - 0.125” Steel Sheets for Fabrication - Quantity Discount Value Packs
Vendor:Warrenton Steel ShopRegular price From $20.00 USDRegular price$40.00 USDSale price From $20.00 USDSale -
5" x 7" x 1/4" Steel Shim Base Plate- A35 Hot Rolled Steel - Welding Practice Coupon
Vendor:Warrenton Steel ShopRegular price From $9.99 USDRegular price$19.98 USDSale price From $9.99 USDSale -
2 Carbon Steel Plates 6" x 6" x 1/4" Plate - Pack of 2 Base plates - A36 Welding Test Practice Coupons - Hot Rolled 0.25” Steel Sheets
Vendor:Warrenton Steel ShopRegular price $10.99 USDRegular price -
6” x 6” x 3/8" Steel Shim - Post Base Plate - A36 Hot Rolled Carbon Steel - 0.375” Welding Practice Coupon - Steel Sheet - Bulk Discounts
Vendor:Warrenton Steel ShopRegular price From $12.00 USDRegular price$60.00 USDSale price From $12.00 USDSale -
6 Weld Practice Plates - 11ga Welding Test Training - A36 Hot Rolled Carbon Steel Coupons 4" x 4" x 1/8" Base Plate Shims - welding Kit - 0.125” Steel Sheets for Fabrication
Vendor:Warrenton Steel ShopRegular price $7.99 USDRegular price -
12” x 12” x 1/4” Steel Plate - A36 Hot Rolled Carbon Steel Base Plates - 1’ x 1’ x 0.25” Steel Sheets - Bulk Discount Value Packs
Vendor:Warrenton Steel ShopRegular price From $25.00 USDRegular price$50.00 USDSale price From $25.00 USDSale -
6” x 6” x 1/8" Steel Shim Base Plate - A36 Hot Rolled Steel - 11ga Welding Practice Coupon - 0.125” Steel - Bulk Discounts
Vendor:Warrenton Steel ShopRegular price From $5.00 USDRegular price$25.00 USDSale price From $5.00 USDSale -
1/4” x 4” Steel Flat Bar - A36 Hot Rolled Strip Plate - Carbon Steel Rectangle Bar - Welding Practice Coupons - 0.25” Steel Plate for Fabrication
Vendor:Warrenton Steel ShopRegular price From $1.99 USDRegular price$9.00 USDSale price From $1.99 USDSale -
4" x 6" x 1/4" Steel Shims - Post Base Plate – A36 Hot Rolled - 0.25” Welding Test Practice Coupons - Heavy Duty Bare Carbon Steel - Bulk Pricing Value Packs
Vendor:Warrenton Steel ShopRegular price From $6.00 USDRegular price$0.00 USDSale price From $6.00 USD