Products Description
| Grades | 202, 304, 304L, 304H, 304LN, 316LN, 309S, 310S, 316, 316L, 316H, 316Ti, 317L, 321, 321H, 347, 347H, 904L, SMO 254, ALLOY 254, 6MO, 6MOLY, UNS S31254 ETC. |
| Type | SEAMLESS / WELDED / COLD DRAW / ERW / EFW / HOT FINISH / COLD FINISH |
| Outer Diameter Size | SEAMLESS - 6 MM OD TO 114.3 MM OD WELDED / ERW- 10 MM TO 114.3 MM OD |
| Wall Thickness | 0.8 MM TO 4 MM WALL THICKNESS |
| Length | 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size. |
| Ends | Plain Ends, Beveled Ends |
| Tube Coating | Mechanical Polish, Electropolish, Satin Finish, Passivated |
| Testing | Product Analysis, Radiographic Examination, Transverse Tension, Flattening, Etching, Stabilizing Heat Treatment, Intergranular Corrosion, Grain Size, NACE 0175, Dual Grade, Weld Decay, Magnetic Particle Detection, PWHT (POST WELD HEAT TREATMENT), Flare, Bend, Hardness, Tensile Test etc |
| Dimension | All Tube are Manufactured and Tested / Inspected to the Relevant standards including ASTM and ASME |
| Value Added Services | Draw / Expansion / Heat Treatment / Annealed / Machining / Sand Blasting / Shot Blasting / Bright Annealed |
ASTM A269 Standard Seamless Tube Chemical Composition
| ASTM A269 Seamless Tubing Grades | UNS | C | Mn | P | S | Si | Cr | Ni | Mo |
| ASTM A269 304 | S30400 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-11.0 | |
| ASTM A269 304L | S30403 | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-13.0 | |
| ASTM A269 316 | S31600 | 0.08 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 11.0-14.0 | 2.0-3.0 |
| ASTM A269 316L | S31603 | 0.035 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 |
ASTM A269 Electropolish Tube Mechanical Properties
| Material | Heat | Temperature | Tensile Strength | Yield Strength | Elongation %, Min |
| Treatment | Min. | Ksi (MPa), Min. | Ksi (MPa), Min. | ||
| º F(º C) | |||||
| ASTM A269 304 | Solution | 1900 (1040) | 75(515) | 30(205) | 35 |
| ASTM A269 304L | Solution | 1900 (1040) | 70(485) | 25(170) | 35 |
| ASTM A269 316 | Solution | 1900(1040) | 75(515) | 30(205) | 35 |
| ASTM A269 316L | Solution | 1900(1040) | 70(485) | 25(170) | 35 |
ASTM A269 Stainless Steel Tubing


SS Pipe Supplier-GNEE
GNEE Group specializes in all kinds of alloy steel, stainless steel, carbon steel, high-temperature, low-temperature, and corrosion-resistant pipes, pipe fittings and welding materials, stainless steel pipes, high-nickel alloy stainless steel pipes, and is one of the top ten steel suppliers in China. You are welcome to enquire anytime.






