天然氣管道等級表公制

1、管道材料等級表項目號文表號管道等級代號設(shè)計階段第2貝共12貝介質(zhì)天然氣NG壓力MPa00.8溫度。CAMB50壓力一溫度關(guān)系*1CW20100150200250300350400MPa1.61.61.441.281.120.960.80.56腐蝕裕度1.5mm焊縫檢驗RTABII10%(40%)*2施工規(guī)范GB50235-97,SH3501-類別名稱材料公稱尺寸范圍壓力等級連接形式標(biāo)準(zhǔn)號備注最小最大管子無縫鋼管201540Sch40SWGB/T8163-1999PE無縫鋼管2050125Sch40BWGB/T8163-1999BE無縫鋼管20150350Sch20BWGB/T8163-1999

2、BE直縫電焊鋼管20400600STDBWGB/T13793-1992法承插焊法蘭2015401.6MPaSW/RFHG20592-97B帶頸對焊法蘭20501251.6MPaWN/RFHG20592-97BSch40帶頸對焊法蘭201506001.6MPaWN/RFHG20592-97BSch20法蘭蓋20156001.6MPaBL/RFHG20601-97B閥門閘閥碳鋼15402.5MPaSWZ61H-25閘閥碳鋼503501.6MPaRFZ41H-16C閘閥碳鋼4006001.6MPaRFZ541H-16截止閥碳鋼15402.5MPaSWJ61H-25截止閥碳鋼502001.6MPaRF

3、J41H-16C碟閥碳鋼502001.6MPaWFD71X-16帶配對法蘭、緊固件碟閥碳鋼1506001.6MPaWFD341X-16止回閥碳鋼15402.5MPaSWH61H-25升降式止回閥碳鋼506001.6MPaRFH44H-16C旋啟式止回閥碳鋼502501.6MPaRFH42H-16C、立式升降式止回閥碳鋼3006001.6MPaWFH76H-16C旋啟式，帶配對法蘭、球閥碳鋼151501.6MPaRFQ41F-16C緊固件球閥碳鋼2006001.6MPaRFQ347F-16C減壓閥碳鋼322001.6MPaRFYK43X-16入口MAX1.6MPa出口MIN0.05MPa安全閥碳

4、鋼322001.6MPaRFA42Y-16C放空排液閥碳鋼15504.0MPaSW/NPTDV111-40管道設(shè)備阻火器碳鋼156001.6MPaRFSH/T3413-1999GZJII-DN-1.6H*3Y型過濾器碳鋼154010.0MPaSWSH/T3411-1999SRYIII6-10.0-DN/CT型過濾器碳鋼504001.6MPaRFSRTlV4-1.6-DN/C(RF)碳鋼504001.6MPaRFSRTI4-1.6-DN/C(RF)管件45彎頭90。彎頭180彎頭管帽等/異徑三通等/異徑45。斜（Y型）三通等/異徑四通2015403000LbSWGB/T14383-1993HG/

5、T21634B2050125Sch40BWGB12459-2005B彎頭采用長半徑20125600Sch20BWGB12459-2005B彎頭采用長半徑等/異徑雙承口管箍2020 x1540X323000LbSWGB/T14383-1993HG/T21634BSFC(S)/SFC(R)雙接口管箍2015403000LbNPTGB/T14626-1993TFC同/偏心異徑接頭冋/偏心異徑管（同/偏心大小頭）2050 x2550X40Sch40BWGB12459-2005BR(C)/R(E)2065x32600 x500Sch20BW管道材料等級表項目號文表號管道等級代號設(shè)計階段第3貝共12貝介質(zhì)

6、天然氣NG壓力MPa00.8溫度。CAMB50壓力一溫度關(guān)系*1CW20100150200250300350400MPa1.61.61.441.281.120.960.80.56腐蝕裕度1.5mm焊縫檢驗RTABII10%(40%)*2施工規(guī)范GB50235-97,SH3501-2002類列名稱材料公稱尺寸范圍壓力等級連接形式標(biāo)準(zhǔn)號備注最小最大活接頭2015403000LbSWHG/T21634B2015403000LbNPTGB/T14626-1993絲堵2015403000LbNPTHGS04單頭螺紋短節(jié)2015403000LbNPTHGS04雙頭螺紋短節(jié)2015403000LbNPTHG

7、S04管件承插焊管接臺2015403000LbSWGB/T19236-2003HG/T21632-90對焊接管臺2050150STDBWGB/T19236-20038字盲板20155001.6MPaRFHG/T21547-93墊環(huán)203506001.6MPaRF插板203506001.6MPaRF柔性石墨纏繞式墊片D1221156001.6MPaRFHG20610-97T=4.5mm緊固-件-等長雙頭螺柱35CrMoAM12M33x2HG20613-97*4六角頭螺母30CrMoM12M33x2*4支管通徑支管連接表600TB-BRANCHWELD支管焊接500RTC-COUPLING半管焊接

8、450RRTD-THREDOLET螺紋管座400RRRTN-NIPOLET短管接頭350RRRRTP-REINFORCINGPAD承插焊管座300RRRRTR-REDUCINGTEE異徑三通250RRRRRTS-SOCKOLET承插焊管座200RRRRTT-TEE等徑三通150RRRTW-WELDOLET對焊管座125P.RRRRT100RRRRT80RRRT65RRRRT50RRRRT40RRRRT32Z*RRRRT25sRRRRT201RRRRT15RRRRT管道材料等級表項目號管道等級代號文表號設(shè)計階段第4頁共12頁介質(zhì)壓力MPa溫度。C壓力一溫度C關(guān)系*1234MPa天然氣NG00.8AMB50W20100150200250300350400腐蝕裕度1.61.5mm材料QVJ02.02.1.6焊縫檢驗0501.441.281.12RTABII10%(40%)*2公稱尺寸范圍壓力等級連接形式Qyo0509-O?08500.96施工規(guī)范標(biāo)準(zhǔn)號520.80.56GB50235-97,SH3501-2002主管通徑注*：1.“壓力一溫度關(guān)系”關(guān)系數(shù)據(jù)取自鋼制管法蘭壓力一溫度等級HG20604-97。