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1、1管线压力等级及材料等级代号管线压力等级及材料等级代号管道压力等级编码规则管道压力等级编码规则一、 采用四位编码组合成管道压力等级，四位编码由字母和数字组成。PIPING PRESSURE RATING IS COMPOSED OF FOUR CODING, WHICH INCLUDES THREE LETTERS AND ONE DIGIT.第一位表示：压力等级，用字母 A、B、C等表示。1st CHARACTER:PRESSURE RATING,USING A,B,C,AND SO ON第二位表示：主体材料，用数字 1、2、3、4表示。2nd CHARACTER:MATERIAL TYPE
2、,USING 0,1,2AND SO ON第三位表示：材料的等级，用字母 A、B、C等表示。3rd CHARACTER: DETAIL MATERIAL,USING A,B,C AND SO ON第四位表示：特殊要求，用字母 A、B、C等表示。4th CHARACTER: SPECIAL REQUIREMENTS,USING A,B,CAND SO ON二、 PRESSURE RATING CODE/压力等级编码表G G G GSPECIAL REQUIREMENTS/特殊要求DETAIL MATERIAL /材料等级MATERIAL TYPE /主体材料PRESSURE RATING/压力级
3、别1. PRESSURE RATING/压力等级A 150LbB 300LbC 400Lb2D 600LbE 900LbF 1500LbG 2500LbH API2000psiI API3000psiJ API5000psiK API10000psiM 125LbP 75LbO NORMAL ATMOSPHERE/常压2.MATERAIL TYPE/主体材料0NONMETAL/非金属1ALLOY STEEL/合金钢2CARBON STEEL/碳钢3CRYOGENIC CARBON STEEL/低温碳钢4STAINLESS STEEL/不锈钢5DUPLEX STAINLESS STEEL/双相不
4、锈钢6COPPER-NICKLE ALLOY/铜镍合金7COPPER/铜 8STANDBY/备用33.DETAIL MATERIAL/材料等级NONMETALAABSDPBGGRE(IMO 753 L3)BPE(HDPE)ESRPE(HDPE)HGRE(UK 00A)CCPVCFGREISTANDBYALLOY STEELA35CrMoBSTANDBYCARBON STEELAA106 Gr B/20 API 5L Gr B A53 Gr B1.5mm CORROSION ALLOWANCEEAPI 5L Gr X42IAPI 5L Gr X75BA106 Gr B/20 API 5L Gr
5、B A53 Gr B3mm CORROSION ALLOWANCEFAPI 5L Gr X52JSTANDBYCA106 Gr B /20 API 5L Gr B A53 Gr B 4.5mm CORROSION ALLOWANCGAPI 5L Gr X65DA106 Gr B /20 API 5L Gr B A53 Gr B6mm CORROSION ALLOWANCHAPI 5L Gr X70CRYOGENIC CARBON STEELAA333 Gr3CA333 Gr6FSTANDBYBA333 Gr4E16MnSTAINLESS STEELA316L/OOCr17Ni14Mo2D304
6、/00Cr18NiGSTANDBYB316/0Cr17Ni12Mo2E321/0Cr18Ni11TiC304L/OOCr19NiF317/0Cr19Ni13Mo34DUPLEX STAINLESS STEELAS31803BS32750CSTANDBYCOPPER-NICKLE ALLOYA90-10CuNiC70-30CuNiESTANDBYB80-20CuNiDSTANDBYCOPPERAALUMINUM BRONZECSILICON BRONZEESTANDBYBRED BRASSDSTANDBYNOTE:1 GRE(IMO 753 L3) IS APPLIED TO WET-PIPE
7、IN FIRE SYSTEM.2 GRE(UK 00A) IS APPLIED TO DRY-TYPE FIRE SYSTEM.4.SPECIAL REQUIREMENT/特殊要求HTEMPERATURE 180/用于温度180以上GCARBON STEEL GALVANIZED OR HOT-DIP GALVANIZED/碳钢镀锌或热浸锌PCARBON STEEL RESIN-COATED /碳钢涂塑ECARBON STEEL EPOXY-COATED/碳钢涂环氧NACCORDANCE TO NACE/满足 NACE 要求LCRYOGENIC/低温RCARBON STEEL CAOTING RUBBER/碳钢衬橡胶ZNO SPECIAL REQUIREMENT /无特殊要求EXAMPLE:A2AG: A-150Lb2-CARBON STEELA-A106 1.5mm CORROSION ALLOWANCEG-CARBON STEEL GAVALNIZED OR HOT-DIP GAVALNIZED
