7" x 0. It it is easy to cut, form, machine, and weld, and offers superior strength and rigidity thanks to its 90 degree angle. General information. Brochure. Dimension Name. Min Order: 5 tons. 5. Thickness: 3 to 22 mm. plate & sheet. With our online steel weight calculator, you can effortlessly calculate the weight of over 20 different types of steel, including steel plates, sheet metal, pipes, bars, beams, etc. 7367 = Lbs. A standard is reviewed every 5 years. 8, L76 × 76 × 6. S25c S35c S45c 65mn Hot Rolled Carbon Steel Angle Bar Top Quality Angle Bar for Building Material. Chinese factory hot rolled steel round pipe for scaffolding Inquire Now. Steel Equal Leg Angle Steel angles can be used in so many construction projects that they are. Browse All Aluminum; Angle. Equal angles are also known as angle irons, or L-brackets. Looking at bigger sizes, stainless steel angles can reach up to 200x200x20 millimetres. 1. ISI/NON ISI Silver Steel Angles, For Construction. Three. 00. ISO 657 consists of 21 parts integrating any shapes of sections. 0. Order: 1 ton. Unequal stainless steel angles also follow the sizes of the carbon steel. 5. the buckling length in the minor axis – Use L zz = L * minor factor. Equal Angle – Mild Steel Equal Angle Sections; 50mm x 50mm x 6mm Mild Steel Angle Iron Hot Rolled; 50mm x 50mm x 6mm Mild Steel Angle Iron Hot Rolled. 5 Buckling curvesProduct Description. 2 Normative references The following referenced documents are indispensable for the application of this document. 1. 95 p/m (ex VAT)Metric Equal Angle Metric Flats. Residual stress distribution model of hot rolled steel equal angles application in Europe [2]: β1 = −0. 750 X 1. Angle sections are manufactured in “L” shape. the buckling length for the torsional mode – Use L xx =1. First, the classification of profiles1. EU EU-Sections (hot-rolled) Equal Leg Angles. Buy 50 X 50 X 5 EN10025 S275JR Mild Steel Equal Angle online from ParkerSteel a leading steel stockholder supplier of Mild Steel Equal Angle. China Manufacturer A36 Ss400 S235 Hot Rolled Carbon Equal Angle Steel Bar Hot Dipped Galvanized Angle Iron Angle Bar Steel Bar Iron . Unequal angles are aptly named after their “legs” or right angles being unequal in length. Hot rolled baklava plates from 4-7 mm x 1000 in lengths up to 6 meters Cylinders 18 – equal angles, conduit beams, conduit beams with flange, open box, Z-section, road bumpers Continuous casting rib boxes of 130 – 200 mm in lengths of 4-8 metersThis paper describes an experimental campaign made on hot-rolled stainless steel equal-legs angles under axial compression. 00 to 20. Size: 20mm X 20mm - 100mm -100mm. Angles are rolled to 90° with a fillet radius or root radius to reduce stress concentration at the corner. Steel angles are used for various purposes in a number of industries. Equal angle bars which are dimensionally standardized according to EN 10056-1 (1998), have parallel legs and their tolerances are defined with EN 10056-2 (1993) represent a broad product line of bar-shaped building elements. Hot rolled open sections are produced in lengths up to about 25 m. Dimensions: 0. Thickness of legs of equal and unequal angle sections are equal. 'JR' - Indicates that the Charpy Impact Test was conducted to 27 joules minimum at room temperature. 0 tons (Min Order) CN Tianjin Longford Metal Products Co. Shoulder –from 20. 1:1996 Structural Steel - Hot Rolled Bars and Sections. Series Standard Manufacturer Region Shape Manufacturing Type; Advance UKA. From building projects downtown, to river-spanning bridges, carbon steel angles are go-to shapes for general construction work. TDP: STN 42 0135. UOM. The experimental programme was divided into four steps: cross-sections and column length selection; measurement of the columns. Hot rolled steel channel, beam, equal leg angle, unequal leg angle, wide flange beam, and tee bar. 1 - I - Sections taper E. IS0 1035/IV Hot-rolled steel bars - Part IV Tolerances of round, square and flat bars - Metric series. To fulfil these objectives, thirteen specimens were tested on 64 × 64 × 6. Grade Availability 300PLUS® Steel is the standard grade manufactured by OneSteel for hot rolled Structural Steel Sections for Australia. Hot rolled equal leg angles; Hot rolled unequal leg angles; Additional. 3x1000mm cold rolled steel sheet/plate price Inquire Now. 00-$750. 5mm Sheet Metal Zintec. Min Order: 27 tons. Hot-rolled 90° steel equal angle sections with bent-up gusset plates are used for triangular towers, since 60° angles are not readily available in India. 3 yrs CN Supplier . 25 x 0. 5mm Sheet Metal Zintec. Min Order: 5. View. This Standard specifies the appearance, shapes and permissible variations thereof, and the dimensions, mass and their tolerances of hot rolled steel sections (hereafter referred to as steel sections). 1: Hot-rolled bars and sections; To find out more about the structural. ISO 657 consists of 21 parts integrating any shapes of sections. . Steel equal angles feature equal length legs. Part 5: Equal-leg angles and unequal-leg angles Tolerances for metric and inch series. However, a similar effect has not been reported for hot-rolled angle sections. Four hot-rolled austenitic stainless steel equal-leg angle sections were used in the testing programme: A 80 × 10 and A 100 × 10 of grade EN 1. US$ 400-550 / Ton. For flexural, or strut buckling, N cr, the elastic critical force, is equal to and the non-dimensional slenderness is given by: for Class 1, 2 and 3. • Indian Standard Equal Angle ISEA • Indian Standard Unequal Angle ISUE • Hot Rolled Plate ASTM A36, BS 4360, GR 50, ASTM A 516 • Checkered Plates Floor Plates Durbar BS 4360, Grade 43A • GI Grating Plain or Serrated • Z Purlins Straight Lipped or Inclined Lipped • C Purlins LippedNucor has 14 bar mills (soon to be 15) located across the U. 95 p/m (ex VAT) 75mm x 50mm x 6mm Mild Steel Angle Iron Hot Rolled. Angle Bar Price SS400 / ASTM A36 / 20# Steel Angle Bar 60/ 45 MS Equal / Unequal Hot Rolled Mild Angle Steel Bar Factory Price. Hot rolled unequal angle, commonly referred to as RSA (Rolled Steel Angle) or angle iron is a versatile low cost, low carbon product suitable for a wide variety of applications. 4 Angles a) Indian Standard equal leg angles (ISA) b) Indian Standard unequal leg angles (ISA) 5. Equal Angle (Hot Rolled) Hot rolled kerap disebut juga sebagai baja H Beam karena bentuknya menyerupai huruf H. A carbon steel equal angle has equal legs and frequently gets used in civil construction and mechanical engineering. 2 The following abbreviated reference symbols have been used in designating the Indian Standard sections mentioned in 5. 95. There are 210 OEM, 170 ODM, 20 Self Patent. This catalogue, which demonstrates Liberty Steel’s ongoing commitment to the Australian construction and manufacturing industry, has been produced to provide technical information on a range of hot rolled structural steel products. DISCLAIMER: Tables, figures, drawings and all information on this page have been carefully researched but not been checked by an independant person/institution and are provided without any liability. Steel Hot Rolled Flat Bar When you are looking for high quality, long-lasting metal products, look no. We also supply most of the standard Stainless Steel Grade such as 304/1. The grade designation (e. 00 - $600. Steelworks 1-1/2-in W x 1-1/2-in H x 6-ft L Mill Finished Aluminum Solid Angle. Ferrite Structural Steels Private Limited. 4 and L102 × 102 × 6. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. Standard: AISI, ASTM, BS, DIN, GB, JIS, etc Grade: Q195, Q215, Q235. In the second revision of this standard. £6. The test results, in combination with. Make an Inquiry for Hot Rolled Steel Equal Angle Unequal Angle at OKorder. Common industries therefore range. CHAPTER 5 MEMBERS IN COMPRESSION . 3-20mm. 3048. STEEL EQUAL ANGLE HOT-ROLLED 50X50X4MM 5. hollow sectionsA572 steel angle description: Steel grade: A572. ParkerSteel - Steel Stockholders, supplies a huge range of structural heavy section to the construction industry across the South of England. 2. MTML UOM: LN. £13. Carbon steel A36 angles are some of the most economical structural parts you can find. 4 made of austenitic stainless steel ASTM 304 A276 (1. Min Order: 5 tons. A36 material is a low carbon steel, often referred to as mild steel which is long lasting and durable. Mild Steel Angle. These hot rolled steel beam sections have sloping flanges. 00. The adopted cross-sections were: L64 × 64 × 4. Angles are rolled to 90° with a fillet radius or root radius to reduce stress concentration at the corner. Use L z = L zz / 3. 4 made of austenitic stainless steel ASTM 304 A276 (1. 95 p/m (ex VAT) 50mm x 40mm x 5mm Mild Steel Angle Iron Hot Rolled. Three. BS EN 10056-1:1999. Specification. Corus. 5. oxidizing capability that might be necessary for welding on hot rolled material. The legs of an equal angle’s “L” are equal in size. smaller Equal/Unequal Angles and Taper Flange Channels) listed as Grade 250 sections as theAS/NZS 3679. 6061; 6063. com. com. In common materials, if the material thickness and the inside radius are equal, the springback is usually 2 degrees or less in common material types. --Satyanarayan Gangaram PitrodaSee Hot Roll Steel Tolerances. Rectangular and Square Tubes. IS0 and. 371 4. A36 hot roll steel unequal leg angles have a rough blue-grey finish, with round or tapered edges. From building projects downtown, to river-spanning bridges, carbon steel angles are go-to shapes for general construction work. tube & pipe. This product can not be purchased directly from our site. Buy steel structural material online by shape. Stainless steel angles, both laser fused and hot rolled, are a popular structural shape that see many uses and applications in the steel industry. 2 (4) classification should be done for the compression parts of the cross-section that. european profiles gost channels upeaa profiles upn profiles ipe profiles ipn profiles hea (ipbl) - european wide flange beams heb (ipb) - european wide flange beams hem. 00. 3. In addition, deviations of the. Design of lattice towers from hot-rolled equal leg steel angles 1 Members of the Examination Committee Ioannis VAYAS, Prof. 17 yrs CN Supplier . The raw billet for Angle steel production is low carbon square billet, and the finished Angle steel is delivered in hot rolled forming, normalizing or hot rolled state. Alloys. This chapter provides the properties for the following combined sections: • Two equal or unequal angles back to back: Used mainly as lower or upper chord of trusses, or bracing members. Equal angle bars represent a broad product line of bar-shaped building elements. B. +44 (0) 161 796 2889. Hot Rolled Stainless Steel Angle. 4mmx1250mm Galvanized Steel Coil width Z40 regular spangle Inquire Now. £15. 33. Buy standard stock or cut your material to length online for low. Choose an option Bars Feet Clear. Offering good weldability, machinability, and heat treatability, Hot Rolled Steel has a rougher surface than cold rolled steel and with galvanization, A36 Hot Rolled Mild Steel resists corrosion well. Size range. [16] for fixed ends columns with equal angle slender cold-formed carbon steel. A standard is reviewed every 5 years. The Company distributes steel products and conducts its distribution business in three principal business segments: metals service centres; energy products and steel distributors. Source from MTC DIS TICARET PAZARLAMA LIMITED SIRKETI on Alibaba. Basic sizes available are as under : M. Hot rolled products are easily galvanised but some products may distort. Scunthorpe office sales. 1: 6 DESIGNATION 6. 0. HOT ROLLED EQUAL ANGLES, US $ 950 - 970 / Metric Ton, ASTM, DIN, EN, S235JR-S335JR Series, DIN1028-DIN1029, EN10056-2, Turkey. 22, β2 = 0. 1. 0. 25") is made of low carbon steel that is commonly found in most industries. Weight: 15. Buy standard stock or cut your material to length online for low. Dimensions: EN 10056-1: 1998 Tolerances: EN 10056-2: 1993. 33. This European Standard does not apply to angles with square roots. 3 yrs CN Supplier . T6. 5 ), and 130 130 x 9 have been included in ihe supplimentary list; d) Amendments issued so far to the various parts of the standard and to IS 808 : 1964 have been The experimental and FE ultimate loads of hot-rolled austenitic stainless steel equal-leg angle section stub columns are normalised by the corresponding cross-section yield loads, and plotted against the b/(tε) ratios of the angle legs, together with the EC3 Class 3 slenderness limit for hot-rolled stainless steel equal-leg angle sections in. How to Calculate the Weight of Equal Angle. TYPE. Dhanlaxmi Steel Distributors. Latest Resources. The most common Angle Steel is 'L' shaped at a 90 degree angle. hot rolled equal angles manufacturers/supplier, China hot rolled equal angles manufacturer & factory list, find best price in Chinese hot rolled equal angles manufacturers, suppliers, factories, exporters & wholesalers. Building material upn 100 s235jr equal steel angles iron angle barMild steel angle 40x40x5 /standard steel angle bar price per kg iron Indian standard: is808 dimensions for hot rolled steelAngle amounts lengths. Cold formed angle iron and flat bar is cold formed according to customer specification which includes size, wall thickness, tolerances and length. 5MTR. $800. Our standard stainless steel sections replicate the dimensions of carbon steel profiles, but we have placed our focus on stainless steel grades only and stock. Equal angles are typically made from roll-formed, mild steel and are formed by bending a piece of steel into an angle so that it forms an “L”-shape, with a 90°, perpendicular angle. Cross-section classification is of importance for the selection of the analysis and design procedures to employ: plastic, elastic or elastic with due account for local buckling. Raw angles can be supplied from 25 x 25mm through to 150 x 100mm and thicknesses of 3mm to 12mm. Unequal angle bars which are dimensionally standardized according to EN 10056-1 (1998), have parallel legs and their tolerances are defined by EN 10056-2 (1993) represent a broad product line of bar-shaped building elements. Equal angle bars represent a broad product line of bar-shaped building elements. 1 Beam, columns and channel sections shall be designated by the respective abbreviatedHot Rolled Equal Angles (16459 products available) 1/6In essence, hot-rolled carbon steel or high strength low alloy steel is used to create a steel angle, also known as an angle iron or a steel angle bar. Depending on their production technology, they can be both. US$ 1500-1880 / Ton. 00 >=200 Tons. Results from the modeling indicate that a lower bound design approach can be encapsulated in the form of two, linear, nominal moment predictive equations that. Series Standard Manufacturer Region Shape Manufacturing Type; Advance UKA. Equal angles are also known as angle irons, or L-brackets. Steel Angle for constructtion, For Construction, Size: 20 X 20 X 3 mm. Tata Steel. 00 to 0. 2 Resistance of angles connected by one leg 4. 49 p/m (ex VAT) 20mm x 20mm x 3mm Mild Steel. Hot-Finished Circular Hollow. $1,200. 1 grade 300. i. 4307 austenitic stainless steel. A comprehensive experimental programme was carried out on austenitic stainless steel (EN 1. Dimension Name. Description. Angle Steel Weight Calculation Formula. They are manufactured by creating a single “L” angle bend in the piece of steel. Hot rolled equal and unequal angles, commonly referred to as RSA (Rolled Steel Angle) or angle iron is a versatile low cost, low carbon product suitable for a wide variety of applications. This Standard replaces GB/T 706-2008 “Hot rolled section steel”. 0 /5 · 0 reviews · Contact Supplier. 1/6. Hollow sections are produced to spec S275 however S235 and S355 are. STEEL EQUAL ANGLE HOT-ROLLED, 50X50X4MM 6MTR; Public Pricelist STEEL EQUAL ANGLE HOT-ROLLED, 50X50X4MM 6MTR. Aluminum angle features sharp angle corners inside and out is often used where strength is less important than surface finish. 8 ISA 65 x 65 x 8 2. The use of stainless steel profiles is characterized by high design flexibility and by fast and cost effective. 4031 – 304L/1. EA 50x50x3. Initial geometric imperfections in angle section members may include out-of-straightnesses as well as initial twist. Hot rolled carbon steel plate strips width 164mm thickness 2. ANGLES UN-EQUAL ANGLES AUSTRALIAN STANDARDS AS/NZS 3679. US$ 800-1400 / Ton. An experimental investigation, comprising material testing, initial geometric imperfection measurements and physical tests on hot-rolled steel equal-leg angle section beams is first presented. General properties Designation Dimensions Position of axes G h = b t r A z s =y s v u 1 u 2 kg/m mm mm mm mm2 mm mm mm. The main standards for technical specifications applicable in the CIS and Ukraine with respect to unequal angles include DSTU EN 10025-2, GOST 535, GOST. 3692 = Lbs. Classification of equal-leg angle profiles. by OneSteel for hot rolled Structural Steel Sections. N denotes Newton which is a unit of force. Hot rolled equal angles, commonly referred to as RSA (Rolled Steel Angle) or angle iron is a. 4301) [35]. (1) where Aσ 0. ISO/R 657-3:1969. 159 kN/m) Unequal angle – ∟200 x 100 x 10 mm (∟ 200 100 @ 0. Length. The general term ‘open’ is used to differentiate su ch sections from structural steel hollow sections. The tested cross-section was a hot-rolled 70 × 70 × 10 equal-leg angle in Grade 1. Architectural Angles. Hot Rolled Equal 90 Degree Angle (398 products available) factory Galvanized Hot Rolled Equal Unequal steel 90 degree angle iron for structure 1mm/50x50x5mm steel angle price in stock $2. Steel Stockholders and suppliers of structural sections and structural hollow sections. S with capacity of over 9 million tons per year. 5 Buckling curvesProduct Description. The experimental programme was performed on a total of five different angle sections, and involved ten stub column tests and ten laterally. Larger hollow sections with a greater. Classification of equal leg angles profiles Classification to compression This condition (c/t ≤ 13,9ε) is less conservative than EN 1993-1-1 (3/3) or EN 1993-1-5 (h/t), and is. Choose an option 304-304/L 316-316/L Other. 4 and L102 × 102 × 6. 00. Production name. Description: S355 is a low carbon, hot rolled structural steel, extensively used in the production of hot rolled universal beam, column and other long products. The next time you need L angles or unequal angle steel from a reliable supplier, remember the name Eagle National Steel. e. IS0 1035/IV Hot-rolled steel bars - Part IV Tolerances of round, square and flat bars - Metric series. Buy Hot rolled equal-leg angle steels 40-200mm from Metal B2B, Hot rolled equal-leg angle steels features: 1. The term ‘bar’ includes (i) rounds, squares, hexagons, and similar cross sections 10 mm and greater across, (ii) flats greater than 5 mm in thickness and 150 mm and less in width or greater than 6 mm in thickness and 200 mm and less in width, (iii) small angles, channels, tees, and other standard shapes less than equal to 75 mm across,. It can also be made of galvanized steel. 25 x 0. Equal and unequal anglesThe stability and design of steel equal-leg angle section members subjected to uniaxial bending are studied herein. 00 - $875. Interaction equation H2-1 is used for all the code check on all angles (equal and unequal leg). We carry Carbon Steel Angle Equal Legs in A36. BS EN 10056-1:1999: Corus: Hot rolled unequal leg angles: Hot rolled: Advance UKA. 51. hot rolled and structural steel products contents introduction 1 test certificates and 2 certificates of compliance build with standards and acrs 4. Angles are rolled to 90° with a fillet radius or root radius to reduce stress concentration at the corner. 00. Product Catalog. Equal Angles. 250. [29], Reynolds [33], Menezes et al. HR angle is measured by its legs dimension on the exterior and by its thickness. IS0 657/13 Tolerances on sloping flange beam, column and channel sections. Size Range: 40x40mm to 250x250mm, Standard Length: 6mtr & 12mtr. Stage: Withdrawal of International StandardAngles An angle (Figure 7-3) is a structural shape whose cross section resembles the letter L. Table 1-2B S-Shapes (Hot Rolled) Table 1-3A C-Shapes (Welded) Table 1-3B C-Shapes (Hot Rolled) Table 1-4 MC-Shapes (Welded) Table 1-5A Equal Angles (Welded) Table 1-5B Equal Angles (Hot Rolled) Table 1-5C Workable gages in Equal Angle Legs Table 1-6A Rectangular HSS (Roll Formed) Table 1-6B Rectangular HSS (Brake Pressed)manufactured from hot-rolled plate. Sizes larger than those listed below are available upon request. 4301) (with corresponding leg width to thickness ratios , b/t, equal to 13. Two sides of an equilateral Angle are of equal width. 87. Hot-rolled structural steel sections. This first edition as an International Standard constitues a technical revision of ISO Recommendation R 657-1:1968. (EA), also known as Angles, Rolled Steel Angle, or RSA in stock for next day delivery. Min Order: 25 metric tons. Thickness: 3 to 15 mm. UPN or UNP is the short form for standardized channel sections according to EN 10365 with tolerances according to EN 10279: 2000. Hot Rolled Equal or Unequal Steel Angles Reference FOB Price Get Latest Price . The studies cover columns with pin-ended boundary conditions exposed to pure axial compression. Hot Rolled Equal Steel Angles (19242 products available) A588 SS400 SS490 SS3400 Hot Rolled MS Carbon Steel Equal Unequal Hot Dipped Galvanized Angle A36 Steel bar $707. The majority of mild steel Equal angle bars will be hot rolled mill finish, this is a relatively low tolerance coarse finish bar with mill scale. The next time you. Status : Withdrawn. Free machining grades such. US$ 400-550 / Ton. i. 00mm, thickness from 3. Apply Reset. Angle bending as small as ½ x ½ x 1/8 to radii as tight as 1-1/2 inch in all the orientations listed above is a common service we provide. ISO 657-1 specifies dimensions of hot-rolled equal-leg angles. The rolled steel equal and unequal angle sections are designated by abbreviated reference symbols ∟ followed by length of. mm x mm x mm. Our hot rolled steel angles are used throughout the construction industry, especially in environments where the working temperature is low. June 1, 2017. 4301) [35]. Indian Steel Sections: Sizes are generated based on Indian Standard IS 808 Third Revision + Amendment No. Technical specifications. Type: equal & unequal. Angle Sizes. Sirqueira et al. Channels (PFC), Taper Flange Beams (TFB), Equal Angles (EA) and Unequal Angles (UA) to AS/NZS 3679. Hot Rolled Steel Angle Bar. IS 808 (1989): Dimensions for Hot Rolled Steel Beam, Column, Channel and Angle Sections [CED 7: Structural Engineering and structural sections] IS 808 : 1989 Indian Standard. Choose an option 304-304/L 316-316/L Other. The safety factors γ M1 are equal to 0. IMPA: 670779 Unit Of Measure: LN Request Quote. 39 10. UOM. 00. Generally angle bars in stainless steel are used in commerce and. Fast Delivery Only applies to orders placed before 2pm. Equal Angle Bar Weight Calculator. 00 - $460. 00 - $727. Flat bar. Montanstahl can produce a wide range of stainless steel angles, both equal legs and unequal legs, in various sizes, defined in imperial or metric systems. 00 - $1,700. Different shapes of structural steel (both hot-rolled and cold-formed) are available with specifications such as: I-beam’s, Z-Shape (half a flange in opposite directions), HSS-Shape (Hollow structural section such as square, rectangular, circular (pipe) and elliptical cross-sections), Equal angle, L-shaped cross-section, Channel ( [-shaped. US $ 500. Serial Size A x B x t. c) Additional equal leg angles 60 60 x 4, 100 100 x 7 ( in place of 100 100 x 6. Unequal Angles. AS/NZS 3679. 5. Menezes et al. Galvanized; Structural (Welded) Threaded Rod. 4 Buckling length, L. 60 hot rolled –taperedA36 material is a low carbon steel, often referred to as mild steel which is long lasting and durable. 7", A-116 11 gauge roll formed hot rolled angle. A numerical model based on FEM was validated against experimental results and used to enlarge the database of the studied structural elements; Two design standard procedures will be assessed in this section: (i) the Eurocode 3 – part 1. This paper addresses the behaviour of carbon steel hot-rolled equal-leg angle cross-section under compression subjected to the flexural-torsional buckling failure mode. Steelforce’s Equal Angle range in size from 20 x 20mm to 200 x 200mm and thickness from 3mm to 26mm. 00 to 200. STEEL EQUAL ANGLE HOT-ROLLED 50X50X4MM 5. Steel grades: S235JR, S275JR, S355J2, St3sp, St3ps: Standard length: 6000, 6100 mm 12000, 12100 mm hot-rolled steel. Square root angles with a very small root radius. The adopted cross section was an L64x64x6. [34] and Liang et al. simple section steelThe square - hot rolled steel, cold drawn steel; the round - rolled bar, forging round steel, cold drawn steelThe flat steel wire; 4; 5 - 6 - spring flat steel; equal angle steel, equilateral angle steel and steel triangle;The six angle to the bow; steel; elliptical steel2.