Q345B無縫鋼管規(guī)格

1、16Mn為（北京華鐵建工金屬材料供應(yīng)中心）低合金高強(qiáng)度結(jié)構(gòu)鋼：含碳量為0.1%-0.25%,加入主要合金元素錳、硅、釩、鈮和鈦等；它的含合金總量<3%。按強(qiáng)度分為300、350、400和450MPa等4個級別。主要有Q295、Q345、Q390、Q420、Q460?！癚”是屈服的“屈”字的漢語拼音大寫字頭，其后數(shù)字為該牌號最小屈服點(diǎn)（s）值，其后的符號是按照該鋼雜質(zhì)元素（硫、磷）含量由高到低并伴隨碳16Mn為無縫鋼管中的一種材質(zhì)。ABCD表示質(zhì)量等級 Q235質(zhì)量等級分為A、B、C、D四級，由A到D表示質(zhì)量由低到高。不同質(zhì)量等級要求如下： A提供S、P、C、Mn、Si化學(xué)成分和fu、fy

2、、5（10），根據(jù)買方需要可提供1800冷彎試驗(yàn)，但無沖擊功規(guī)定，含炭量和含錳量不作為交貨條件。 B提供S、P、C、Mn、Si化學(xué)成分和fu、fy、5（10），冷彎180試驗(yàn)。還提供+200C時沖擊功Ak27J C除與B級要求一樣外，還提供00C時沖擊功Ak27J。 D-除與B級要求一樣外，還提供-200C時沖擊功Ak27J E除與B級要求一樣外，還提供-400C時沖擊功Ak27J。北京華鐵建工金屬材料供應(yīng)中心Q345b無縫鋼管規(guī)格規(guī)格規(guī)格規(guī)格規(guī)格14*338*5.589*5133*1814*3.542*389*5.5159*614*442*3.589*6159*6.516*342*489*7

3、159*718*242*589*7.5159*818*342*689*8159*9.518*442*889*9159*1018*545*389*10159*1219*245*489*11159*1421*445*589*12159*1622*2.545*6108*4.5159*1822*345*7108*5159*2022*448*4108*6159*2822*548*4.5108*7168*625*2.548*5108*8168*725*348*6108*9168*825*448*7108*10168*9.525*548.3*12.5108*12168*1025*5.551*3108*141

4、68*1127*3.551*3.5108*15168*1227*451*4108*16168*1427*551*5108*20168*1527*5.551*6114*5168*1628*2.557*4114*6168*1828*357*5114*7168*2028*3.557*5.5114*8168*2228*457*6114*8.5168*2530*2.560*4114*9168*2832*2.560*4114*10180*1032*360*5114*11194*1032*3.560*6114*12194*1232*460*7114*13194*1432*4.560*8114*14194*1

5、632*560*9114*16194*1834*360*10114*18194*2034*476*4.5133*5194*2634*4.576*5133*6219*6.534*576*6133*7219*734*6.576*7133*8219*838*376*8133*10219*938*3.576*9133*12219*1038*476*10133*13219*1238*4.589*4133*14219*1338*589*4.5133*16219*14規(guī)格規(guī)格規(guī)格規(guī)格219*16273*36356*28426*12219*18273*40356*36426*13219*20273*42377

6、*9426*14219*22273*45377*10426*17219*24298.5*36377*12426*20219*25325*8377*14426*22219*26325*9377*15426*30219*28325*10377*16426*36219*30325*11377*18426*40219*32325*12377*20426*50219*35325*13377*22457*9.5219*38325*14377*25457*14273*7325*15377*32457*16273*8325*16377*36457*19273*9325*17377*40457*24273*9.

7、5325*18377*45457*65273*10325*20377*50508*13273*11325*22406*9.5508*16273*12325*23406*11508*20273*13325*25406*13508*22273*15325*28406*17558.8*14273*16325*30406*22530*13273*18325*32406*32530*20273*20325*36406*36570*12.5273*22325*40406*40610*13273*25325*45406*55610*18273*28356*9.5406.4*50610*78273*30356

8、*12406.4*55624*14.2273*32356*15406*60824*16.5273*35356*19尺寸偏差偏差等級標(biāo)準(zhǔn)化外徑允許偏差D1±1.5%，最小±0.75 mmD2±1.0%。最小±0.50 mmD3±0.75%最小±0.30 mmD4±0.50%。最小±0.10 mm布氏硬度(HB)10mm3000kgf維氏硬度(HV)洛氏硬度(3)肖氏硬度(HS)抗拉強(qiáng)度(近似值)MPa(2)標(biāo)準(zhǔn)球碳化鎢球洛氏硬度A載荷60kgf金剛石圓錐壓印頭(HRA)洛氏硬度B載荷100kgf剛球&Osla

9、sh;1.6mm球(1/16in)(HRB)洛氏硬度C載荷100kgf金剛石圓錐壓印頭(HRC)洛氏硬度D載荷150kgf金剛石圓錐壓印頭(HRD)-94085.6-68.076.997-92085.3-67.576.596-90085.0-67.076.195-(767)88084.7-66.475.793-(757)86084.4-65.975.392-(745)84084.1-65.374.891-(733)82083.8-64.774.390-(722)80083.4-64.073.888-(712)-(710)78083.0-63.373.387-(698)76082.6-62.57

10、2.686-(684)74082.2-61.872.1-(682)73782.2-61.772.084-(670)72081.8-61.071.583-(656)70081.3-60.170.8-(653)69781.2-60.070.781-(647)69081.1-59.770.5-(638)68080.8-59.270.180-63067080.6-58.869.8-62766780.5-58.769.779-67780.7-59.170.0-60164079.8-57.368.777-64079.8-57.368.7-57861579.1-56.067.775-60778.8-55.6

11、67.4-55559178.4-54.766.7732055-57978.0-54.066.1-2015-53456977.8-53.565.8711985-53377.1-52.565.0-1915-51454776.9-52.164.7701890(495)-53976.7-51.664.3-1855-53076.4-51.163.9-1825-49552876.3-51.063.8681820(477)-51675.9-50.363.2-1780-50875.6-49.662.7-1740-47750875.6-49.662.7661740(461)-49575.1-48.861.9-1

12、680-49174.9-48.561.7-1670-46149174.9-48.561.7651670444-47474.3-47.261.0-1595-47274.2-47.160.8-1585-44447274.2-47.160.863158542942945573.4-45.759.761151041541544072.8-44.558.859146040140142572.0-43.157.858139038838841071.4-41.856.856133037537539670.6-40.455.754127036336338370.0-39.154.652122035235237

13、269.3(110.0)37.953.851118034134136068.7(109.0)36.652.850113033133135068.1(108.5)35.551.948109532132133967.5(108.0)34.351.047106031131132866.9(107.5)33.150.046102530230231966.3(107.0)32.149.345100529329330965.7(106.0)30.948.34397028528530165.3(105.5)29.947.6-95027727729264.6(104.5)28.846.741925269269

14、28464.1(104.0)27.645.94089526226227663.6(103.0)26.645.03987525525526963.0(102.0)25.444.23885024824826162.5(101.0)24.243.23782524124125361.810022.842.03680023523524761.499.021.741.43578522922924160.898.220.540.534765223223234-97.3(18.8)-217217228-96.4(17.5)-33725212212222-95.5(16.0)-705207207218-94.6

15、(15.2)-32690201201212-93.8(13.8)-31675197197207-92.8(12.7)-30655192192202-91.9(11.5)-29640187187196-90.7(10.0)-620183183192-90.0(9.0)-28615179179188-89.0(8.0)-27600174174182-87.8(6.4)-585170170178-86.8(5.4)-26570167167175-86.0(4.4)-560163163171-85.0(3.3)-25545156156163-82.9(0.9)-525149149156-80.8-23505143143150-78.7-22490137137143-76.4-21460131131137-74.0-450126126132-72.0-2