1、Designation:B100015Standard Practices forCasting Preparation and Test Procedure of PorcelainEnamel-lined Pipe,Fittings,and Valves for Use in theMunicipal Wastewater,Sewage,and Water TreatmentIndustry1This standard is issued under the fixed designation B1000;the number immediately following the desig
2、nation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.INTRODUCTIONPorcelain enamel(glass)lining applied
3、 to the internal surfaces of ductile iron and steel pipe andfittings have been utilized in the municipal waste water and sewage treatment and water relatedindustries since the early 1960s as a deterrent to interior clogging in high solids process piping becauseof the hardness and significantly impro
4、ved flow characteristics of the porcelain enameled product.Thecoating is applied using the wet process of porcelain enameling,whereby a slurry of wet enamel isspray applied to the properly prepared surface of the pipe,fittings,or valve component parts.Thewater is removed through a drying process,and
5、 the product is then heat fused to the metal by heatingin a furnace at approximately 1350F(733C)for a sufficient time to allow fusing of the glass materialto the ductile iron or steel surface.It has been found to provide far better performance and longevityin these piping systems than any organic li
6、ning material.Porcelain enamel or glass lining is notintended to be a highly corrosion-resistant,completely pinhole-free lining product but is utilized forits hardness and flow/slickness characteristics.1.Scope1.1 The following procedures and practices are intended toprovide guidelines for processin
7、g and quality control that willprovide acceptable results for the intended end use,keeping inmind the varying quality of the castings available.1.2 The recommendations are based on what have beenacceptable industry standards and experiences for over 40years of proven product usage.1.3 The values sta
8、ted in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.I
9、t is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D5162 Practice for Discontinuity(Holiday)Testing of Non-conductive Protective Co
10、ating on Metallic SubstratesD5965 Test Methods for Specific Gravity of Coating Pow-dersD7091 Practice for Nondestructive Measurement of DryFilm Thickness of Nonmagnetic Coatings Applied toFerrous Metals and Nonmagnetic,Nonconductive Coat-ings Applied to Non-Ferrous Metals2.2 NACE and SSPC Standard:3
11、SP01882006 Discontinuity(Holiday)Testing of New Pro-tective Coatings on Conductive Substrates2.3 NAPF Standard:4NAPF 500 Surface Preparation Standard for Ductile IronPipe and Fittings in Exposed Locations Receiving SpecialExternal Coatings and/or Special Internal Linings1This test method is under th
12、e jurisdiction ofASTM Committee B08 on Metallicand Inorganic Coatings and is the direct responsibility of Subcommittee B08.12 onMaterials for Porcelain Enamel and Ceramic-Metal Systems.Current edition approved Nov.1,2015.Published November 2015.DOI:10.1520/B1000-15.2For referenced ASTM standards,vis
13、it the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from NACE International(NACE),15835 Park Ten Pl.,Houston,TX77084,http:/www.nace.org.4Avai
14、lable from the National Association of Pipe Fabricators,1901 N.W.161stStreet,Edmond,OK 73013,.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2.4 AWWA Standard:5AWWA C151 Ductile-Iron Pipe,Centrifugally Cast3.Recommendations Related to In
15、spection of IncomingCastings for Processing3.1 Ductile iron pipe should be ordered as a minimum of athickness Class 53 and be specified as“for glass lining.”Steelpipe should be ordered according to Table 1.3.2 All castings received should be supplied bare,withouthaving been previously coated or line
16、d or otherwise exposedinternally to any prior organic lining product.3.3 The castings should be visibly inspected for excessivesurface irregularities such as pinholes or larger holes,cavities,sand inclusions or voids that will not allow for proper coverageof the porcelain enamel lining.3.4 Any indentations or subsurface defects in the castingshould be minor and should not exceed a depth of18in.(3.2 mm).Gradual,sloping sides with no undercut edges arepermissible.3.5 Castings should also be inspec
