管道材料工程规定.docx

1、管道材料工程规定Engineering SpecificationofPiping Material ZAS-BUILTDu QiangDu ShuliYao Liang2013-10-301Issued for ConstructionDu QiangDu ShuliYao Liang2012-07-19版 次REV.说 明DESCRIPTION 设 计PRED校 对CHKD审 核APPD审 定AUTHD日 期DATEContents1.0 GENERAL1.1 Intent This engineering specification contains specific requireme

2、nts for the selection of piping materials used in Changshu Coatex Additive Co.,Ltd High Performance Emulsion System Project. 1.2 Scope This specification shall be applied to piping materials indicated on P&ID flow diagrams and utility flow diagrams piping systems. The specification of piping systems

3、 provided by manufacturer should be approved by MaisonWorleyParsons.1.3 Codes and standardsDesign, fabrication, testing and inspection of piping materials shall be accomplished in accordance with the applicable Codes and Standards in the latest edition as follows:CHINESE STANDARDGB 50316- -Design Co

4、de for Industrial Metallic PipingGB/T 20801- Pressure piping code - industrial pipingGB50235- -Code for construction and acceptance of industrial metallic pipingGB50236- -Code for construction and acceptance of field equipment, industrial pipe welding engineeringGB/T 8163- -Seamless Steel Tubes for

5、Liquid ServiceGB/T 9711.1- -Petroleum and Natural Gas Industries-Steel Pipe for Pipelines-Technical Delivery Conditions-Part 1: Pipe of requirements class AGB/T14976- Stainless Steel Seamless Pipes for Fluid TransportHG21547- Paddle Blank, Paddle Spacer and Figure-8 BlankGB/T 12716- Taper Pipe Threa

6、ds with 60 degreeGB/T12459- Steel Butt-welding Seamless Pipe FittingsGB/T13405- Steel Plate Butt-welding Pipe FittingsGB/T14383- Forged Fitting, Socket Welding and ThreadedHG20553- Dimension Selecting Series For Seamless and Welded Steel Pipe of Chemical IndustryHG/T2059220614(Europe Series)- Steel

7、Pipe Flanges, Gaskets and FastenersTHE OTHER STANDARDSMSS-SP-83-Class 3000 Steel Pipe Unions Socket-welding and ThreadedMSS-SP-97- Integrally Reinforced Forged Branch Outlet Fittings-Socketwelding, Threaded and Butt-welded Ends2.0 MATERIALS 2.1 Standard Materials2.1.1 Material for individual piping

8、components shall normally conform to the requirements of GB, HG standard etc. When materials are not covered by the local standards, equivalent ASME, ASTM, API, MSS, BS or manufacturers standard may be used. 2.1.2 All carbon and low temperature carbon steel grades of pipe material shall have a maxim

9、um carbon content of 0.25% and a maximum carbon equivalent of 0.45 based on the following formula: 2.1.3 All carbon steel shall be supplied with killed steel. The use of rimming steel is not permitted. All carbon steel material shall be supplied in normalized finish condition. An alternative heat tr

10、eated condition shall be submitted to Purchaser for approval2.1.4 All austenitic stainless steel shall be supplied in a solution annealed condition. No welding or working of the material is permitted after this treatment in the shop. All welds made to stainless steel components shall be pickled and

11、passivated.2.1.5 Galvanizing pipe when specified shall be hot dipped. The minimum weight of average coating shall be according to GB/T 3091.2.2 Asbestos Asbestos shall not be used in the plant in any form.3.0 GENERAL REQUIREMENTS3.1 General As a rule, the principal dimensions of piping components, w

12、hich are designated in Piping Material Classification, shall be in accordance with applicable standard.3.2 Pipes3.2.1 Dimensions of pipes shall be in accordance with the following table except otherwise noted.Item Product Dimension Pipe(SMLS)Carbon steel GB/T8163HG20553(Ia)Austenitic stainless steel

13、 GB/T14976HG20553(Ia)3.2.2 DN 10 (NPS 3/8), 32(NPS 1 ), 65 (NPS 2 ), NPS 3 , 125 (NPS 5) and DN550 (NPS 22) shall not be used. However, in cases where the use of these sizes cannot be avoided, the required piping material, fittings, flanges, valves and gaskets shall be the same material as next larg

14、er sizes in the applicable piping class.3.2.3 The following is an equivalent pipe size table:NPSDN NPSDN”1516”400”2018”4501”2520”5001 ”4024”6002”5026”6502-1/2”6528”7003”8030”7504”10032”8006”15034”8508”20036”90010”25040”100012”30044”110014”35048”12003.3 Valves3.3.1 All valves shall be protective coat

15、ed in accordance with vendors standard.3.3.2 Any exposed (unpainted) carbon steel parts / surfaces shall be given a heavy coating. Internal metal surfaces shall be sprayed or coated with similar suitable rust preventative.3,3,3 Valve ends shall be suitably protected against damage and the ingress of

16、 foreign matter. Ends shall be protected as below:a) Socketweld and plain ends shall be closed with metal or plastic protectors that fit either inside or outside the valve ends.b) Threaded ends shall be fitted with plastic plugs / capsc) Flanged ends shall be protected by plastic (preferred), or woo

17、d covers, securely held in place by a minimum of four bolts / inserts. Gasket contact surfaces shall be protected to ensure serrations are not damaged in transit or storage. 3.3.4 All valves shall be marked / tagged with (as a minimum) the project tag and/or code number in additional to information

18、required by the applicable design standard. Full marking requirements will be stated within the enquiry.3.3.5 All valves except gate valve having a preferred direction of flow shall be marked with an arrow cast on the valve body.3.3.6 End and bonnet flanges shall be cast or forged integrally with th

19、e valve body. In case of conversion of butt weld end valves to flange by welding on flanges is acceptable only with addition heat treatment (if required) and 100%RT and subject to PURCHASER prior review and approval.3.3.7 Valves specified as needing to be fire safe shall have been tested and certifi

20、ed as having met the requirements of API 607. This Fire Safe requirement shall be applicable to soft seated valves only.3.3.8 Vendor shall not modify an existing valve to bring into conformance with data sheet requirements without written approval of the Purchaser. Examples of modifications are as f

21、ollows:(a) Addition of extended bonnet (gas column) to a standard valve.(b) Inserting resilient seats.(c) Revising trim.(d) Modifying flanged end valves to buttweld end (machining off flanges).(e) Changing bolting and / or packing.(f) Weld repair to castings and any subsequent heat treatment.(g) Mod

22、ifying a buttweld end valve to threaded or socketweld ends.(h) Modifying a threaded end valve to socketweld ends.3.3.9 Unless specified otherwise, all austenitic stainless steel materials shall be furnished in a solution annealed condition. Approved repairs, if any, shall be made prior to solution a

23、nnealing.3.3.10 Metallic and non-metallic bonnet and cover gaskets shall have corrosion resistance equal (or better) than that of the body and bonnet materials.3.3.11 Any optional backseat, low pressure closure or high pressure closure test shall be clearly identified on the valve data sheet (with r

24、elevant test pressure / temperature). Vendor shall include all additional costs for these tests.3.3.12 All pressure testing of austenitic stainless steel valves shall be carried out with water having a maximum of 65 ppm chloride content.3.3.13 Each wrench operated ball valves shall be furnished with

25、 a wrench.3.3.14 Enclosed gear operators shall be provided for valves as follows If no decription in data sheet:Gate valveGlobe valveBall valveButterfly valvePN16DN400DN300DN200DN50PN40DN350DN250DN100DN503.3.15 For insulated valves, as indicated in P & I D and data sheet, the handle shaft should be

26、extended, which the operator shall be outside the insulation. The individual extend length shall be shown in data sheet.3.4 Flanges3.4.1 Dimensions shall be as follows:1) HG/T 20592-HG/T 20614(European Series) 3.4.2 Flange facing finish shall be serrated finish in accordance with applied standard in

27、 case of soft gasket.3.5 Fittings 3.5.1 Dimension shall be as follows:Forged fittings, socket welding and threadedGB/T14383 Series ISteel butt-welding seamless pipe fittingsGB/T12459 Series ISteel plate butt-welding pipe fittingsGB/T13401 Series ISpecial fittings Manufacturers standard3.5.2 Fittings

28、 shall be designed for pressure rating fully equal to those calculated for seamless pipe of the same or equivalent material. Written records confirming the above shall be available for review by Purchaser during the bidding stage.3.5.3 Long radius elbows shall be used. Short radius elbows may be use

29、d only where space limits the use of long radius elbows.3.5.4 Branch connections for individual piping classes shall be made in accordance with branch connection table of individual piping class.3.5.5 Pipe plug shall be square head type.3.6 Gaskets3.6.1 Dimensions shall be as follows:(1) Non-metalli

30、c Gasket HG/T 20606(2) Graphite/304 Gasket HG/T 20608(3) Spiral Wound Gasket HG/T 206103.6.2 Unless noted otherwise, non-metallic gaskets for flat face shall be 3.0 mm thickness.3.6.3 Unless otherwise noted spiral wound gaskets shall be 4.5 mm thick.3.7 Bolts and Nuts3.7.1 Dimension and standard sha

31、ll be as follows:Length of stud bolt HG/T 20613Nut GB6170Stud bolt GB901Stud bolt (full length)HG/T 206133.7.2 Stud bolt shall be continuously threaded with full length. Dimensions and tolerances of thread shall be in accordance with GB 196 and GB 197.3.7.4 Machine bolts/screws shall be used when mating valves with threaded taps. These machine bolts/screws shall have the same material de