Main Products 2. Welded Stainless Steel Tubes & Fittings 3. Welded Stainless Steel Mechanical/Ornamental Tubing 4

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1 CONTENTS Main Products 2 Welded Stainless Steel Tubes & Fittings 3 Welded Stainless Steel Mechanical/Ornamental Tubing 4 Welded Austenitic Stainless Steel Tubes 5 Austenitic Stainless Steel Butt-Welded Fittings 6 BS 1387 : 1985 Light, Medium and Heavy 7 Black & Galvanized Welded Steel Tubes 8 Carbon Steel Tubes for Ordinary Piping 9 ERW Steel Tubes for Cement Lined Pipes 9 Carbon Steel Tubes for General Structure Purposes (AA Pipes) 10 ASTM A500 : Square and Rectangular Hollow Sections Square Hollow Sections 12 Rectangular Hollow Sections

2 MAIN PRODUCTS Our Company manufactures a wide range of quality industrial steel products which are widely accepted by the building and secondary manufacturing industries. Classification Specification Page Application Welded Stainless Steel ASTM A554 4 Architectural application such as hand railing, Mechanical / Ornamental Tubing gates, furniture, display stand etc. Welded Austenitic ASTM A312 5 Usage in pharmaceutical industries, marine Stainless Steel Tubes engineering, petrolchemical plant, oil refinery plant, pulp & paper processing line, general food processing line etc. Austenitic Stainless Steel ASTM A403 6 For joining of industrial tubes. Butt-Welded Fittings Carbon Steel Tubes for BS For bicycles, vehicles, agricultural Ordinary Uses, Water Piping JIS G application, civil engineering, steel and Structural Purposes towers, furniture, mining industry, etc. ERW Steel Tubes for Cement MS 1968/BS EN Industrial water, irrigation & agriculture water, Lined Pipes sewage & drainage piping, etc. Carbon Steel Tubes for General Manufacturer 10 Ordinary uses, light structure support, Structural Purposes (AA Pipes) Standard etc. Square and Rectangular ASTM A Buildings, bicycles, vehicles, machineries, Hollow Sections lamp post, hand rails, furniture pipes, structures and all other supports, etc. 2

3 WELDED STAINLESS STEEL TUBES & FITTINGS TYPE OF STAINLESS STEEL: CHARACTERISTICS & APPLICATIONS Standard Designation Classification JIS ASTM & AISI Din Characteristics Major Applications Standard SUS Properties such as corrosion General home appliances, chemical Type resistance, heat resistance, industry, architecture and decorative workability and weldability uses. are excellent and well-balanced. Stainless steel most easy to use. (NI-Based) SUS 304L 304L Excellent in grain boundary Oil refining, chemical and nuclear corrosion resistance and power industries. suited for work which permits no heat treatment after welding Improved SUS Better corrosion resistance than Chemical, pulp, photography and Corrosion that of 304 against sea water food processing facilities. and other media. Resistance SUS 316L 316L Carbon content is reduced Machinery and equipment chemical Type compared with 316, thereby industry (NI-Based) adding grain boundary corrosion resistance to characteristics of 316. CHEMICAL COMPOSITION Standard Grades Carbon Manganese Phosphorous Sulphur Silicon Nickel Chromium Molybdenum Specification Available (% max) (% max) (% max) (% max) (% max) (%) (%) (%) ASTM A312 TP TP 304L TP TP 316L ASTM A554 MT MT 304L MT MT 316L ASTM A403 WP WP 304L WP WP 316L MECHANICAL PROPERTIES Standard Grades Tensile Strength Yield Strength Elongation Specification Available min (N/mm²) min (N/mm²) 2in or 50mm min % ASTM A312 TP TP 304L TP TP 316L ASTM A554 MT MT 304L MT MT 316L ASTM A403 WP WP 304L WP WP 316L

4 WELDED STAINLESS STEEL MECHANICAL/ ORNAMENTAL TUBING ASTM A554 Round Tube (Outside Diameter) Weight (kg/m) Nominal Wall Thickness (mm) in mm / / / / / / / Square Tube (Outside Diameter) Weight (kg/m) Nominal Wall Thickness (mm) in mm / / / / Rectangular Tube (Outside Diameter) Weight (kg/m) Nominal Wall Thickness (mm) in mm x 1/ x /2 x 3/ x /2 x x x x

5 WELDED AUSTENITIC STAINLESS STEEL TUBES ASTM A312 Nominal Outside Diameter Nominal Wall Thickness Schedule 10S Schedule 40S Weight Nominal Weight TP 304/ TP 316/ Wall TP 304/ TP 316/ TP 304L TP 316L Thickness TP 304L TP 316L in mm mm kg/m kg/m mm kg/m kg/m 1/ / / / / PERTINENT EXCERPTS FROM ASTM A312 SPECIFICATION Applicable Standards Outside Diameter Tolerance (mm) (mm) Outside Diameter to , to , to , Wall Thickness Length Not less than 12.5% of nominal wall thickness Outside diameter : 203 mm or less Length : 7320 mm or shorter, mm Other : As per mutual negotiation 5

6 AUSTENITIC STAINLESS STEEL BUTT-WELDED FITTINGS ASTM A403 Nominal 90 Elbow 45 Elbow Cap Equal Long Radius Long Radius Tee (weight: kg/pc) in 10S 40S 10S 40S 10S 40S 10S 40S 1/ / / / / (weight: kg/pc) Nominal Reducing Tee Concentric & Eccentric Reducer in 10S 40S 10S 40S 3/4 x 1/ x 1/ x 3/ /4 x 1/ /4 x 3/ /4 x /2 x 1/ /2 x 3/ /2 x /2 x 1 1/ x 3/ x x 1 1/ x 1 1/ /2 x /2 x 1 1/ /2 x 1 1/ /2 x x x 1 1/ x 1 1/ x x 2 1/ (weight: kg/pc) Nominal Reducing Tee Concentric & Eccentric Reducer in 10S 40S 10S 40S 4 x 1 1/ x x 2 1/ x x 3 1/ x x 2 1/ x x 3 1/ x x x 2 1/ x x 3 1/ x x x 3 1/ x x x

7 BS 1387 : 1985 LIGHT, MEDIUM, HEAVY GENERAL INFORMATION ON BS 1387 : WELDED STEEL TUBE DESCRIPTION APPLICATIONS END FINISH AND END PROTECTION IDENTIFICATION MARKING BS 1387 : 1985 welded steel tube is produced in three thickness classes - Light, Medium and Heavy - available in black finished or hot dipped galvanized finished in 6 meter uniform mill lengths. For ordinary conveyance of steam, gas, air, water, etc. Plain-end square-cut (PE) or threaded and fixed with coupling (T/C). (PE) tubes are shipped without any protection on both ends. T/C tubes are supplied screwed with taper theads to BS 21 and fitted with one taper-threaded malleable iron socket, as required under this specifications. Tubes are marked by colour bands about 50 mm wide, painted about 300 mm from each end, as follow : Light tubes-brown Medium tubes-blue Heavy tubes-red PERTINENT EXCERPTS FROM BS 1387 : 1985 SPECIFICATION CHEMICAL COMPOSITION MECHANICAL PROPERTIES TOLERANCES ON DIMENSION AND MASS BEND TEST FLATTENING TEST LEAK TIGHTNESS TEST HOT-DIP ZINC COATING TEST (IF REQUIRED) BORE TEST FOR HOT-DIP COATED TUBES The chemical composition of the steel, by ladle analysis, shall comply with the table below : C max. Mn max. P max. S max. 0.20% 1.20% 0.045% 0.045% The mechanical properties at room temperature shall be given as table below : Tensile strength (N/ mm2) : 320 to 460 Yield strength (N/ mm2) : 195 min. Elongation on gauge length Lo = 5.65 So (%) : 20 min. Outside Diameter : As shown in table on following page. Wall Thickness : Light tubes - 8% Medium and heavy tubes - 10% Mass : The mean consignment mass for quantities of DN 150 mm and over of one size shall not deviate more than ±4% from the mass of consignment calculated from the mass given in table as appropriate. No single tube shall deviate by more than = 10%, - 8% from the mass given in table as appropriate. Black tubes up to and including DN 50 mm shall be bent cold without any signs of fracture or failure, through 180 degrees round a former having a radius at the bottom of the groove equal to six times the outside diameter of the tube as given in table. Hot-dip-zinc coated tubes shall be bent cold without cracking the steel, through 90 round a former having a radius at the bottom of the groove equal to eight times the outside diameter of the tube. The flattening test applies to tubes greater than DN 50 mm. A ring not less than 40 mm in length taken from one end of each selected tube shall be flattened cold between parallel flat platens without showing either crack or flaw until the distance between the platens, measured under load, is not greater than 75% of original outside diameter of the tube, and no cracks or flaws in the metal elsewhere than in the weld shall occur until the distance between the platens is less than 60% of original diameter. The weld shall be placed at 90 degrees to the direction of flattening. The test shall be either a hydraulic test at a pressure of 50 bar ( 50 x 10 N/ M² ), or, alternatively, an eddy current test. After the four successive one-minute immersions in the copper-sulphate solution, the test sample shall not show any adherent red deposits of metallic copper. Hot-dip zinc coated tubes up to and including DN 25mm shall have a rod 230 mm in length, of the appropriate diameter specified below, passed through them and shall have a free bore. Rod diameters Nonimal size (DN) Diameter of rod (mm) 15mm mm mm

8 BLACK & GALVANIZED WELDED STEEL TUBES BS 1387 : 1985 LIGHT, MEDIUM, HEAVY 8 Tolerances Outside Diameter : as shown in table Wall Thickness : Class Light - 8% + not limited Medium & Heavy - 10% + not limited Weight 500ft. : ± 4% Single Tube : + 10% - 8% HEAVY (C) MEDIUM (B) LIGHT (A) CLASS Number of Threads per inch Nominal Outside Diameter Maximum Minimum Wall Thickness Calculated Weight Plain Ends Threads and Coupling Socket Outer Diam. Min. Length Test Pressure mm in 1/2 3/ /4 1 1/ / /2 3/ /4 1 1/ / /2 3/ /4 1 1/ / in mm in mm in mm kg/ft kg/m kg/ft kg/m in mm in mm Psi Bar Pieces Bundling

9 CARBON STEEL TUBES FOR ORDINARY PIPING JIS G3452 : 1997 Tolerances Wall Thickness : + not limited % Outside Diameter : as shown in table Nominal Outside Diameter Wall Thickness Weight (Plain End) Test Pressure Bundling in mm in mm in mm lb/ft lb/20ft kg/ft kg/m kg/6m Bar Psi Pieces ERW STEEL TUBES FOR CEMENT LINED PIPES MS 1968 : 2007 / BS EN : 2002 Tolerances Wall Thickness & Outside Diameter as shown in table : Outside Minimum Outside Diameter Calculated Weight Diameter Wall Thickness Maximum Minimum Plain Ends mm mm mm mm kg/m

10 CARBON STEEL TUBES FOR GENERAL STRUCTURE PURPOSES (AA PIPES) MANUFACTURER STANDARD Tolerances Wall Thickness : +/- 10% Outside Diameter : as shown in table Nominal Maximum Outside Diameter Minimum Wall Thickness Calculated Weight Plain Ends Bundling in mm in mm in mm in mm kg/m kg/ft lb/ft Pieces 1/ / / / / /

11 SQUARE & RECTANGULAR HOLLOW SECTIONS ASTM A500 SPECIFICATION SURFACE FINISH STANDARD MILL LENGTH The products are supplied in unpickled and oiled condition. Primer or varnish undercoat finish is available upon request. Square & Rectangular Tubes are supplied in 6 meter length. Special length can be arranged upon request. PERTINENT EXCERPTS FROM ASTM A500 SPECIFICATION CHEMICAL COMPOSITION (Heat Analysis) MECHANICAL PROPERTIES TOLERANCES IN OUTSIDE DIAMETER TOLERANCES IN WALL THICKNESS TOLERANCES IN LENGTH TOLERANCES IN STRAIGHTNESS SQUARENESS OF SIDES RADIUS OF CORNERS TOLERANCES IN TWIST C S P max(%) max(%) max(%) Grade A Grade B Tensile Yield Elongation Strength Strength (N/mm²) (N/mm²) (%) Grade A 310 (min) 269 (min) 25 (min) Grade B 400 (min) 317 (min) 23 (min) Largest Outside Dimension in (mm) Tolerances, plus & minus, in (mm) 2 1/2 (63.5) and under : (0.50) Over 2 1/2 to 3 1/2 (63.5 to 88.9), incl. : (0.64) Over 3 1/2 to 5 1/2 (88.9 to 139.7), incl. : (0.76) Over 5 1/2 (139.7) : 1% Plus and minus 10% of nominal thickness, exclusive of weld area. Plus 2 inches on standard length. 1/8 in x Total Length(ft) 5 Adjacent sides of tube may deviate from 90 degrees by plus or minus 2 degrees. The radius of any outside corner of the section shall not exceed 3 times the specified wall thickness. Largest Outside Dimension Maximum Twist in 3ft in (mm) in (mm) 1 1/2 (38.1) and under (1.27) Over 1 1/2 to 2 1/2 (38.1 to 63.5), incl (1.57) Over 2 1/2 to 4 (63.5 to 101.6), incl (1.90) Over 4 to 6 (101.6 to 152.4), incl (2.20) Over 6 to 8 (152.4 to 203.2), incl (2.54) Over 8 (203.2) 0.2 (2.84)

12 SQUARE HOLLOW SECTIONS X Y X ASTM A500 / MANUFACTURER STANDARD Y Nominal Area of Moment Section Radius of Wall Thickness Unit Weight Metal of Inertia Modulus Gyration Bundling I Z r in mm in mm lb/ft kg/ft kg/m kg/6m in 2 in 4 in 3 in Pieces 1/2 x 1/ x /8 x 5/ x /4 x 3/ x x x /4 x 1 1/ x /2 x 1 1/ x x x /2 x 2 1/ x x x x x x 5.0 x x x

13 Y RECTANGULAR HOLLOW SECTIONS X X ASTM A500 / MANUFACTURER STANDARD Y Nominal Wall Unit Area of Moment of Section Radius of Thickness Weight Metal Inertia in 4 Modulus in 3 Gyration in Bundling in mm in mm lb/ft kg/ft kg/m kg/6m in 2 Ixx Iyy Zxx Zyy rxx ryy Pieces 1 x 1/ x /2 x 3/ x x x /2x1 1/ x x 1 1/ x x x x x x x

14 Y RECTANGULAR HOLLOW SECTIONS (CONT D) X X ASTM A500 / MANUFACTURER STANDARD Y Nominal Wall Unit Area of Moment of Section Radius of Thickness Weight Metal Inertia in 4 Modulus in 3 Gyration in Bundling in mm in mm lb/ft kg/ft kg/m kg/6m in 2 Ixx Iyy Zxx Zyy rxx ryy Pieces 5 x 2.0 x x 3.0 x x x x x x x x x