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4.76*0.65 Copper Coating Single Welded Steel Tube 1. Standard ASTM A254 Copper-brazed steel tubing SAE J526 Welded low-carbon tubing EN10305-6 Welded cold drawn tubes from hydraulic and pneumatic power systems 2. Steel Grade BHG1, SPCC, SPCD, SPCEN, ST14, ST15, ST16, DC04, DC05, DC06 3. Heat Treatment BK or NBK 4. Specification O D/ mm 4 4.2 4.76 6 6.35 7.8 8 9.52 W T 0.5-1.0mm (0.5-0.7mm common WT) Tolerance ±0.05mm Length 180Kg/coil; 700-1000m/coil; per customer’s request 5

4.76*0.7 Copper Coating Single Welded Steel Tube 1. Standard ASTM A254 Copper-brazed steel tubing SAE J526 Welded low-carbon tubing EN10305-6 Welded cold drawn tubes from hydraulic and pneumatic power systems 2. Steel Grade BHG1, SPCC, SPCD, SPCEN, ST14, ST15, ST16, DC04, DC05, DC06 3. Heat Treatment BK or NBK 4. Specification O D/ mm 4 4.2 4.76 6 6.35 7.8 8 9.52 W T 0.5-1.0mm (0.5-0.7mm common WT) Tolerance ±0.05mm Length 180Kg/coil; 700-1000m/coil; per customer’s request 5.

Copper Coated Single Wall Welded Bundy Tube 1. Standard ASTM A254 Copper-brazed steel tubing SAE J526 Welded low-carbon tubing EN10305-6 Welded cold drawn tubes from hydraulic and pneumatic power systems 2. Steel Grade BHG1, SPCC, SPCD, SPCEN, ST14, ST15, ST16, DC04, DC05, DC06 3. Heat Treatment BK or NBK 4. Specification O D/ mm 4 4.2 4.76 6 6.35 7.8 8 9.52 W T 0.5-1.0mm (0.5-0.7mm common WT) Tolerance ±0.05mm Length 180Kg/coil; 700-1000m/coil; per customer’s request 5.

ASTM A252 Seamless and Welded piling steel pipe Type: Seamless and Welded Carbon Steel Tube Application: For piling purposes and load carrying Size: Outside diameter: Shall not vary more than plus or minus 1% from the diameter specified. Wall thickness: Not more than 12.5% under the nominal wall thickness specified. Process:The steel shall be made by one or more of the following processses:open-hearth,basic-oxygen or electric-furnace. Seamless Pipe Pile Seamless pipe pile

ASTM A53 Hot Dipped Galvanized Square and Round Carbon Steel Tube For Building and Industry Type: Galvanized Steel Tube Application: For liquid delivery, structural pipe, industry pipe Technique: Cold Drawn and Hot-Finished Size: OD 5-420mm WT 1-50mm Length Max12000mm Zinc thickness: According to cutomers requirement Product Description Standard: Standard2: Certification: Surface Treatment: JIS, DIN, ASTM, BS, GB, API JIS G3463-2006, JIS G3454-2007, JIS G3444-2006, JIS G3469

JIS G3465 Seamless Mild Steel Tubing Standards: JIS G3465 Grade: STM-C 540, STM-C 640, STM-R 590, STM-R 690,STM-R 780,STM-R830 Outer Dimensions: 6mm ~ 350mm Wall Thickness: 0.8mm ~ 35mm Length: max 24000mm Application: Steel pipes for low temperature service Packing: Beveled/black painting/ plastic caps/ in bundles/ steel strips/ wooden protection Inspection and Test: Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength, Yield Strength,Elongation,

Heat Exchanger ERW ASTM A214 Carbon Steel Pipe Standard ASTM A214 O.D. 6 - 76.2 mm W.T. 1 - 20 mm Length Max 12000 mm Application Condenser, Boiler, Heat Exchanger and etc. Surface Finish Oiled Chemical Composition: Carbon,max,% 0.18 Manganese,% 0.27-0.63 Phosphorus,max,% 0.035 Sulfur,max,% 0.035 Test and Inspection: Hardness Requirement Mechanical Test - Flattening Test - Flange Test - Reverse Test - Hydrostatic or Nondestructive Electric Test Competitive Advantage: 100%

ERW Steel Pipe ASTM A214 ERW Carbon Steel Tube For Heat Exchanger Product Description Standard ASTM A214 O.D. 6 - 76.2 mm W.T. 1 - 20 mm Length Max 12000 mm Application Condenser, Boiler, Heat Exchanger and etc. Surface Finish Oiled Chemical Composition: Carbon,max,% 0.18 Manganese,% 0.27-0.63 Phosphorus,max,% 0.035 Sulfur,max,% 0.035 Test and Inspection: Hardness Requirement Mechanical Test - Flattening Test - Flange Test - Reverse Test - Hydrostatic or Nondestructive

ASTM A178 ERW Welded Carbon Steel Boiler and Super Heater Tubes Applications: for Boilers,Superheaters, Heat-Exchangers, Condensers, Boiler flues, superheater flues and e ends Production: Electric Resistance Welding Size range: O.D.:6-127mm W.T.:0.9-9.1mm L: according to customer requirement STEEL GRADE AND CHEMICAL COMPOSITIONS Element Grade A Grade C Grade D C 0.06 - 0.18 ≤ 0.35 ≤ 0.27 Mn 0.27 - 0.63 ≤0.80 1.00 - 1.50 P ≤ 0.035 ≤ 0.035 ≤ 0.030 S ≤ 0.035 ≤ 0.035 ≤ 0.015