This article is about Aluminum Seamless Pipe and technical specification based on international codes and standards of GB/T 4437.1 Alloy 5083.
Aluminum Seamless Pipe (GB/T 4437.1 Alloy 5083)
| Scope Description | Aluminum, seamless, plain end, process pipe. |
| Material Specification | GB/T 4437.1. Alloy: 5083. Temper: O. |
| Dimensional
Specification |
GB/T 4436 or ASME B36.10M except that the pipe wall thickness shall be as specified in the purchase order and Table 1 of this specification. |
| Purchase Order | See purchase order for DN or NPS, wall thickness, lengths in meters or feet, and delivery and shipping instructions. |
| Lengths | Straight lengths:
• Minimum 4 m (13 ft) random lengths for DN150 (NPS 6) and smaller • Specified or cut lengths shall be as specified in the purchase order, and length tolerances shall be +6 mm (1/4 in) and -0. |
| Tolerances | GB/T 4436 or ANSI H35.2 or H35.2(M), Section 16 |
| Drawings | Not required |
| Calculations | Not required |
| Chemical Composition | GB/T 3190, Alloy 5083 |
| Mechanical Strength | GB/T 4437.1, Alloy 5083, Temper O |
| Welding | Not applicable |
| Heat Treatment | GB/T 4437.1, Alloy 5083, Temper O |
| Inspection | GB/T 4437.1. Air Products inspection is not required, unless specified in the purchase order. |
| Testing | GB/T 4437.1 |
| Examination | GB/T 4437.1 |
| Certification | Mill certificate. |
| Marking | GB/T 4437.1 or ASTM B 666/B 666M.
Marking shall also include the heat identification and the CAD Commodity Code (also see 4WPI-M00001). Marking shall be stamped on edge of pipe or on a tag securely affixed to the pipe. |
| Protection | GB/T 4437.1 |
| Color Coding | Not required |
| Packing | Suitable packing shall be provided to ensure that all items arrive at the contractual point of delivery in an undamaged condition. Refer to the purchase order for specific packing standards and instructions. |
| Special Requirements | The hydrogen content of the product shall not exceed 0.3 ppm by mass. The finished product shall be suitable for welding. |
Application Notes
Aluminum, seamless pipe.
Pressure: As calculated.
Temperature: -268° to +65°C (-452° to +150°F).
Table 1 – Pipe Wall Thickness Requirements
| Nominal Pipe Size DN |
U.S. Customary Pipe
Wall Schedule (mm) |
Chinese Pipe Wall
Thickness – mm |
| 15 | Sch 40 (2.77) | 3.0 |
| 20 | Sch 40 (2.87) | 3.0 |
| 25 | Sch 40 (3.38) | 3.5 |
| 40 | Sch 40 (3.68) | 4.0 |
| 50 | Sch 40 (3.91) | 4.0 |
| Sch. 80 (5.54) | 6.0 | |
| 80 | Sch 40 (5.49) | 5.5 |
| Sch. 80 (7.62) | 8.0 | |
| 100 | Sch 40 (6.02) | 6.0 |
| Sch. 80 (8.56) | 8.5 | |
| 150 | Sch 40 (7.11) | 7.0 |
| Sch. 80 (10.97) | 11.0 | |
| 200 | Sch 40 (8.18) | 10.0 |
| Sch. 80 (12.70) | 13.0 | |
| 250 | Sch 40 (9.27) | 10.0 |
| Sch. 80 (15.06) | 15.1 |