This article is about Low-Temperature Steel Seamless Pipe (A 333, Grade 6) and technical specification based on international codes and standards of ASTM A 333/A 333M Grade 6.
Low-Temperature Steel Seamless Pipe (ASTM A 333/A 333M, Grade 6)
| Scope Description | Low-temperature steel, seamless, plain end pipe. |
| Material Specification | ASTM A 333/A 333M. Grade: 6. |
| Dimensional
Specification |
ASME B36.10M. |
| Purchase Order | See purchase order for DN or NPS, schedule or weight class or wall thickness, lengths in meters or feet, and delivery and shipping instructions. |
| Lengths | Single or double random to ASTM A 333/A 333M unless otherwise stated. The supplier shall state whether single or double with the quotation.
Metric equivalents of lengths specified in ASTM A 333/A 333M, paragraph 9.1 shall apply when pipe is ordered in metric units. Specified or cut lengths shall be as specified in the purchase order, and length tolerances shall be according to ASTM A 530/A 530M. |
| Tolerances | ASTM A 333/A 333M. |
| Drawings | Not required. |
| Calculations | Not required. |
| Chemical Composition | ASTM A 333/A 333M, Grade 6. Also by ladle analysis the carbon content shall be 0.23% maximum and Supplementary Requirement S2 is required. |
| Mechanical Strength | ASTM A 333/A 333M, Grade 6.
The maximum tensile strength shall not be more than 565 N/mm2 (81 ksi). |
| Welding | Not allowed. |
| Heat Treatment | ASTM A 333/A 333M, Grade 6. |
| Inspection | ASTM A 333/A 333M. Air Products inspection is not required unless specified in the purchase order or required by the certification for this specification. |
| Testing | ASTM A 333/A 333M, Grade 6.
Special impact tests are not required. Hydrostatic testing is required. NDE alone is not acceptable. |
| Examination | ASTM A 333/A 333M. NDT shall be performed by suitably qualified personnel who must be approved by a Third Party Organization recognized by a Member State according to Article 13 of either Pressure Equipment Directive (PED) 97/23/EEC or national legislation implementing PED 97/23/EEC. A person suitably qualified as above shall sign the NDT reports. |
| Certification | Items DN25 (NPS 1) and smaller shall be provided with an EN 10204 Type 3.1 inspection certificate.
Certification for all other items shall be one of the following:
Company’ representative may be from any Inspection Body acceptable to Company or alternatively a person nominated by Company. The supplier shall contact Company’ Inspection Department to establish who may be Company’ representative when applicable. For items manufactured outside the European Community, copies of the NDT reports and the NDT personnel qualifications shall be included in the documentation with the material certification. For items manufactured within the European Community, only copies of NDT reports shall be included with the material certification providing all the other documentation is retained by the supplier for a minimum of 12 years. |
| Marking | ASTM A 333/A 333M. Marking shall also include the Commodity Code. Also see General Piping Material Purchase Specification. |
| Protection | Pipe shall be delivered free from corrosion or oxidation. A protective coating of light oil or varnish corrosion inhibitor may be used. This inhibitor shall be easily removable, and the supplier shall state with his quotation the method for removal. |
| 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 | Repair welding is not acceptable. |
| Application Notes | Low-temperature steel, seamless pipe to the PED. Pressure: As calculated.
Temperature: -29° to +427°C (-20° to +800°F). |