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1、SG Sight Glass 视镜M.W. Mineral Wool 矿（物）棉SPL Sound Pressure Lever 升压水准CLEAR Clearance 间隙JS Jack Screw 顶开（起）螺栓ID *Inside Diameter 内径LEP Large end plain 大端为平的NO Normally Open; 常开WP Plug 堵头ISNS Inside screw & Non-rising Stem 内螺纹非升杆C.V Check Valve 止回阀B-B Beveled End-Beveled End 两端为坡口端VAR Variable 可变的NB N
2、ominal Bore 公称孔径DS Directional Stop 定向限为架NIP Nipple 短管BL Battery Limit 装置区边界HOR Horizontal 水平的OS & Y Outside Screw and Yoke 外螺纹阀杆和阀轭UWeight 重量OD *Outside Diameter 外径INS Insulation 隔热STD *Standard 标准DN Down 下SK Sketch 草图P-B Plain End Bevel End 平端-坡口端CH-OP Chain Operated 链条操纵的FLEX TUBE Flexible Tube 挠
3、性管EQUIV Equivalent 相当的HF Hard Alloy Face on阀内件（阀心）为DIM *Dimension 尺寸LG Long 长FP Fix Point 固定点H Hanger 吊架PTFE *Polytetrafluoroethylene 聚四氟乙烯VERT Vertical 垂直的MAX Maximum 最大BWG * Birmingham Wire Gage 伯明翰线规LIFT Lift Type 升降式DIA *Diameter 直径SB Stud Bolt 双头螺栓FF Flat Faced Or Full Faced 全平面；满平面P.C.D. Pitch
4、 Circle Diameter 节圆直径LGF Lens Gasket Face 透镜垫连接面PT.NO Part No. 件号BRED Reducer 异径管Testing Material 美国材料实验协会SPEC *Specification 规定，说明WB Weld Branch 焊接支管IFTF Fitting To Fitting 管件直连LJ Lap Joint 搭接C.S.O. Car Seal Open 在开启状态下封住TOP Top of pipe 管顶SCH *Schedule 管壁厚系列号FLGF Flanged Face 法兰面LTG Large Tongue &
5、Groove 大椎槽DNGALV *Galvanize 镀锌ECC Eccentric 偏心R.H.THD Right Hand Thread 右螺旋SCRD Screwed 螺纹VOL *Volume 卷，册，容量，体积XL.P. Low Pressure 低压HDR Header 总管GV Gate Valve 闸阀FDN Foundation 基础COL *Column 柱。塔CPLG Coupling 管接头。连轴节EFLG Flange 法兰DN Norminal Diameter公称直径NPS Nominal Pipe Size 公称管径ERW Electric Resistanc
6、e Welded 电阻焊的Association 美国水工协会YTop of Steel 钢结构顶面JCONN Connection 连接。接口RPM *Revolutions Per Minute 转/分XH Extra Heavy 加强的。加厚的EXP.JT Expansion Joint 膨胀节H.P *High Pressure 高压DMF Double Male And Female 双重凹凸W *West 西T Tee 三通WL Wel* Line 焊接线FIG *Figure 图SC Sample Cooler 取样冷却器BB Bolted Bonnet 栓柱连接的阀盖G*Num
7、ber号； 数量BOP Bottom Of Pipe 管底WN Wel* Neck 对焊法兰（颈部）R *Radius 半径OSNB Outside Screw Non-Bonnet 外螺纹无阀盖C-F Center to Face 中至面ASME *American Society Of Mechanical Engineers美国机械工程师协会TYP Typical 典型的TOS Top of Support 支架顶面NV Needle Valve 针形阀W.P. Working Point 工作点B.C Bolted Cover(cap) 螺栓连接的阀兰盖（帽）REV *Revision
8、 修改ELL Elbow 弯头SS *Stainless Steel 不锈钢GA *Gage 表，表压，规（线规）SR Shout Radius 短半径FGW Fusion Gas Wel* 气熔焊PF Platform 平台FS Forged Steel 锻钢H.CPLG Half Coupling 半节管接头MB Machine Bolt 机器螺栓（单头）美国阀门和管件制造商标准化协会EFW Electric Fusion Welded 电容焊的WD Width 宽度ASSY *Assembly 装配，组装DF Drain funnel 排液漏斗N *North 北SOF Slip On
9、Flange 滑套法兰EL(ELEV) *Elevation 标高；立面TCOD Continued on Drawing 接续图WP Working Pressure 工作压力WE Weld End 焊接端ATM *Atmosphere 大气压VFURND Furnished 提供的。装设的C.S. Cold Spring 冷紧HC Hose Connection 软管接头DR Drain 排液EC External Coating 外面涂防腐层RF Raised Face 凸面NOM Nominal 公称的；额定的YP Yield Point 屈服点LO Locked Open 在开启状态
10、下锁定XXS Double Extra Strong 双倍加强的HUC Union Cap 带活接头的阀帽UB Union Bonnet 带活接头的阀盖SF Semi-Finished 半光TG Tongue & Groove 椎槽THK *Thickness 厚度C.R. Concentric Reducer 同心异径管BW Butt Weld 对焊A Anchor 固定MSS * Manufacturers Standardization Society of the Valve and Fittings Industry, Inc.MS *South 南MF *Manufacture 制
11、造厂FW Field Weld 现伤焊SRE Short Radius Elbow 短半径弯头SAW (Automatic)Submerged Arc Wel* 自动埋弧焊LRE Long Radius Elbow 长半径弯头SO Slip On 滑套CUST Customer 客CONT *Continue 连续LET Large end Threaded 大端带螺纹M.L Match Line 连续线ORF Orifice 孔板SHH Hand Hole 手孔BEP Both Ends Plain 两端平AWS *American Wel* Society 美国焊接协会GL Ground
12、Level 地面C Cap 管帽REQD Required 需要；申请XXH Double Extra Heavy 双倍加强（厚）的SWG Swage 锻造，模锻PSIA *Pounds Per Square InchFORIENT Orientation 方位API *American Petroleum Institute 美国石油学会BF Blind Flange 盲板法兰ASB Asbestos 石棉QTY *Quantity 数量ABS *Absolute 绝对的N.B. Non-Bonnet 无阀盖STM.TR Steam Tracing 蒸汽拌暖SET Small end Thr
13、eaded 小端带螺纹REF Reference 参考SB Screwed Bonnet 螺纹阀盖VAC Vacuum 真空DISCH *Discharge 出口，排出ISO Isometric Drawing 周测图（空视图）ANSI *American NationalWC Weld Cap 焊接管帽FOB Flat On Bottom 底面平FLGD Flanged 法兰式的CL *Class 英制压力等级，等级，种类SH Surface Hard Facing 硬质密封面PB Pressure Seal Bonnet 压力密封的阀盖PN Plant North 工厂北向GSKT Gas
14、ket 垫片L.H.THD Left Hand Thread 左螺纹WT Wall Thickness 壁厚MW Minimum Wall 最小壁厚RJ Ring Joint 环垫接头OPipe ThreadRO Restriction Orifice 限流孔板RV Relief Valve 安全泄液阀SV Safety Valve 安全泄气阀SYM Symmetrical 对称的LC Locked Closed 在关闭状态下锁定NC Normally Closed 常闭RPS *Revolutions Per Second 转/秒NOZ Nozzle 管口NPT *American Nati
15、onal Taper 美国锥管螺纹OR Outside Radius 外半径SWMG Swing Type 旋启式ISRS Inside screw & Rising stem 内螺纹升杆B-P Beveled End -Plain End 坡口端.平端BBE表示 Beveled both Ends，是指钢管的两端都要做焊接坡口，以方便焊接B.E Bell End 承口GTAW (Inert)Gas Tungsten Arc Wel* 惰性气体保护钨极电弧焊G Guide 导向Absolute 磅/PBB By Buyer 买方供货UN Union 活接头BLD Blind 盲板EQIOP E
16、quipment 设备。装置C.I *Cast Iron 铸铁BE Beveled End (for wel*) 坡口（焊接用）REINF Reinforce 加强RS Resting Support 支承架。滑动架NPSH Net Positive Suction Head 净正吸渗透压头AWG *American Wire Gage 美国线规PE Plain End (not beveled) 平端（无坡口）ST Steam Trap 蒸汽疏水阀SEP Small end Plain 小端为平的STM Steam 蒸汽TOC Top of Concrete 混凝土北向CGLV Globe Valve 截止阀P-P Plain End-Plain End 两端为平端STG Small Tongue & Groove 小椎槽面PSIG Pounds Per Square Inch Gage 磅/LMI Malleable Iron 可锻铸铁GEAR OP
