Issue Date: 26 June 2013

Transcription

1 HandyTube Corporation s seamless tubing specification has been used as the basis of developing the technical requirements for this product. The products of other manufacturers shall be acceptable if the products comply with the requirements outlined herein. I. Scope: Tubing shall be high integrity seamless tubing with no longitudinal or orbital welds. No welded and drawn seam free tubing shall be permitted. All tubing shall be of the highest quality, MADE IN USA, under stringent industry standards, including, but not limited to PED 97/23/EC, ISO 9001 and NACE MR0175. This specification encompasses the requirements for the alloys set forth in Appendix A. II. III. IV. Manufacturer: Tubing manufacturer shall be ISO 9001 certified and have over 30 years of experience manufacturing tubing. Supplier shall also be compliant with other industry standards, including, but not limited to, Pressure Equipment Directive (PED). Tubing manufacturer shall be PED certified in accordance with the requirements outlined in the Pressure Equipment Directive 97/23/EC and the Pressure Equipment Regulations 1999, UK Statutory Instrument 1999 No and 2002 No Material: All material shall be high integrity seamless tubing with no longitudinal or orbital welds. No welded or welded and drawn seam free tubing shall be permitted. Material provided shall fully comply with the relevant ASTM specification outlined in Appendix A. Alloys with asterisks (*) shall be provided as dual certified alloys. Mother Tubes: The tubing manufacturer shall procure seamless mother tubes from reputable companies preferably located in USA, Europe, Japan or Korea. Vendors shall be RoHS and REACH compliant. All mother tubes shall be highquality cold finished or hot extruded. Hot pierced mother tubes shall not be permitted. V. Chemical Composition: Product analysis shall be reported in the mill test certificate. All limits shall fully comply with the outlined composition limits. For alloys listed in Appendix B, the chemistry shown shall supersede the chemistry outlined in the ASTM specification. VI. Heat Treatment: All tubing shall be delivered in the solution annealed condition. Material shall be heat treated in a vacuum furnace and rapidly cooled by Nitrogen and/or Argon quench to avoid sensitization. Strand heat treatment shall not be permitted. a. System Accuracy Tests per AMS 2750 of the furnace temperature control system shall be performed weekly. The temperature control system must be capable of sustaining test temperature within a tolerance of ± 5ᵒF. Page 1

2 b. Temperature Uniformity Surveys per AMS 2750 of the furnace work zone shall be performed monthly. Temperature Uniformity results shall be within ± 25ᵒF of pre determined testing temperatures. VII. Definition: The term lot applies to all tubes of the same nominal diameter and wall thickness, produced from the same heat of material and annealed in the same vacuum furnace load at the same temperature for the same amount of time. a. All material shall be processed to maintain lot traceability. Mixing of lots shall not be permitted. VIII. IX. Tolerances: The tolerances of the finished product shall comply fully with the tolerances outlined in the relevant ASTM specification based on a nominal outer diameter and wall thickness. Testing Requirements and Procedures a. Positive Material Identification (PMI) Using Niton XL Analyzer: 100% PMI shall be performed on all material at its finished size while in coil form. Internal documented company procedures shall be in place to ensure 100% PMI. Manufacturer shall have clearly defined equipment procedures for alloy identification using Niton XL Analyzer. This analyzer shall employ the principles of x ray fluorescence to analyze metal samples, which is nondestructive in nature. Operators of the Niton XL Analyzer shall be welltrained and certified in proper safety and measuring techniques. b. Non Destructive Analysis: Manufacturer shall perform 100% pressure testing of all coils at the finished size, per the procedure outlined below. Material that is provided as finished straight lengths shall be 100% pressure tested or non destructively tested at its finished size at the option of the manufacturer. i. Hydrostatic Testing: Manufacturer shall perform 100% hydrostatic testing of all coiled material with finished outer diameters.236 [6.0 mm] and larger per equations below. P = Test pressure [psi] S = 90% of minimum yield strength [psi] t = Minimum wall thickness (nominal wall thickness minus tolerance) [inches] D = Maximum outer diameter (nominal outer diameter plus tolerance) [inches] d = Maximum inside diameter (D 2t) Page 2

3 1. For sizes with a wall/outer diameter ratio less than 0.17, the manufacturer shall use the equation below to calculate test pressure: For sizes with a wall/outer diameter ratio greater than or equal to 0.17, the manufacturer shall use the equation below to calculate test pressure: Tubing shall be tested with deionized water per the following procedure: a. Fill coils with deionized water. b. Pressurize tubing and hold for one minute. c. After one minute, vent tubing and re pressurize. d. Vent, pressurize again hold pressure for five minutes. e. Tubing shall show no bulges, leaks, pinholes, cracks or other defects when subjected to the calculated hydrostatic test pressure. ii. A Nitrogen pressure test at 1,000 psi [7 MPa] shall be performed on tubing with outer diameters less than.236 [6.0 mm]. Nitrogen pressure test shall be performed on material at finished size in coil form to ensure 100% of material can withstand pressure. Pressure shall be maintained for five minutes. The material shall then be examined for bulges, leaks, pinholes, cracks and other defects when subjected to the pressure test. iii. Eddy Current Testing shall be performed in lieu of hydrostatic testing at the option of the manufacturer on finished straight lengths. The testing shall strictly adhere to procedures outlined in ASTM E426. c. Tensile Testing: Tensile testing shall be carried out per ASTM E8 (Standard Test Methods for Tension Testing of Metallic Materials). Specimen preparation, equipment operation and data presentation are described therein. d. Micrographic Examination: The microstructure shall be examined at a minimum magnification of 100X on a suitably etched specimen prior to shipment. Specimens shall not show any abnormalities or any signs of sensitization. Page 3

4 X. Sample Retention: Supplier shall retain random samples from each lot of material. Samples shall be retained in a climate controlled facility as a standard practice for a period of no less than five years and made available for future testing if requested by the buyer. XI. XII. XIII. Marking: The marking shall ensure full traceability to melt and heat treatment lot. Tubes shall be marked with standard information including: Manufacturer name, material type or UNS number, lot number, heat number, nominal size, country of manufacture, customer s purchase order number. Material Test Reports: Tubing manufacturer shall furnish the material test certificate outlining the testing and results mentioned in Section IX in accordance with the relevant specification outlined in Appendix A. Lengths: All material shall be high integrity seamless tubing with no longitudinal or orbital welds. No welded or welded and drawn seam free tubing shall be permitted. a. Coil Lengths: Only one continuous length seamless tube shall be wound on a reel. Minimum permissible coil lengths for standard sizes shall be provided per Appendix C and Appendix D. Lengths for non standard sizes shall be provided at the option of the manufacturer. b. Straight Lengths: Outer Diameter Cut Length Cut Length Tolerance.630" [16.0 mm] < 2' [0.6 m] ± 0.010" [0.25 mm].630" [16.0 mm] 2 24' [ m] + 1/ 0" [25.4 mm] >.630" [16.0 mm] * * *Material shall be provided in coil form only XIV. Packaging: All material shall be high integrity seamless tubing with no longitudinal or orbital welds. No welded or welded and drawn seam free tubing shall be permitted. All wooden packaging materials, when required, shall be heat treated and stamped with the IPPC mark per ISPM No. 15 (Guidelines for Regulating Wood Packaging Material in International Trade). Material shall be packaged to maintain traceability. Mixing of lots shall not be permitted. a. Coils: Tubing shall be packaged on wooden reels and/or pallets and/or in boxes. To eliminate waste caused by shorter lengths, only one continuous coil shall be wound per reel. Tube ends shall be protected by caps to ensure no internal contamination is introduced during transit and storage. The hub of the reel shall be protected with stretch wrap. b. Straights: Tubing shall be securely packaged in boxes which fully support the weight of the material. Boxes shall be cut to a length that accommodates Page 4

5 packaging materials and prevents material motion inside of the box during transit. XV. Note: a. All specifications mentioned shall be the current revision. b. Exceptions and deviations to this document are subject to approval by manufacturer. Formal requests for exception or deviation shall be made in writing. c. This document is subject to revision without notice. Page 5

6 Appendix A ASTM Specifications per Alloy UNS NUMBER GRADE ASTM SPECIFICATION S30400/S30403* 304/304L S31600/S31603* 316/316L S31600/S31603* 316/316L with 2.5% min. Mo. S31700/S31703* 317/317L S S N06600 Inconel 600 ASTM B167 N06625 Inconel 625 ASTM B444 N08825 Inconel 825 ASTM B423 N06022 Hastelloy C22 ASTM B622 N10276 Hastelloy C276 ASTM B622 N04400 Monel 400 ASTM B165 N02200 Nickel 200 ASTM B161 N L Page 6

7 Appendix B Exceptions to Standard Chemistries Composition Limits, % for UNS S31600/S31603 with 2.5% min. Mo. C Mn P S Si Cr Ni Mo Cu N Page 7

8 Appendix C Minimum Permissible Coil Lengths 1 UNS S30400/S30403, UNS S31600/S31603, UNS S32100, UNS N08825 Outer Diameter Wall Thickness Minimum Permissible Lengths [in.] [mm] [in.] [mm] [ft] [m] Coil lengths may vary. Page 8

9 Appendix D Minimum Permissible Coil Lengths 1 UNS S31700/S31703, UNS S34700, UNS N06600, UNS N06625, UNS N06022, UNS N10276, UNS N04400, UNS N02200, UNS N08904 Outer Diameter Wall Thickness Minimum Permissible Lengths [in.] [mm] [in.] [mm] [ft] [m] Coil lengths may vary. Page 9