无锡不锈钢管生产厂家收拾 自从2012年国家发布不锈钢管生产履行规范GB/T14976-2012以来，市场上出售的不锈钢管喷码一片紊乱，2012版别和2002版别都有，很多用户都搞不懂新版别比旧版别都有什么地方改动。下面咱们经过对比来具体的剖析一下。GB/T14976-2012本规范参照ASTMA268/A269M《一般用处奥氏体不锈钢无缝管和焊接钢管》、ASTMA312/A312M《无缝、焊接和深度冷加工奥氏体不锈钢管》和ASTMA268/A268M《一般用处无缝和焊接铁素体和马氏体不锈钢管》的修订。首要意图仍是与国际规范化接轨。由于我国加入了WTO世贸安排。1、按GB/T20878-2007修改了钢的商标和化学成分：下面咱们来看表一安排类型序号商标化学成分（质量分数）/%CSiMnPSNiCrMoTi其他奥氏体型不锈钢10Cr18Ni9≤0.07≤1.00≤2.00≤0.035≤0.038.0~11.017.0~19.0 21Cr18Ni9≤0.15≤1.00≤2.00≤0.035≤0.038.0~10.017.0~19.0 300Cr19Ni10≤0.03≤1.00≤2.00≤0.035≤0.038.0~12.018.0~20.0 40Cr18Ni10Ti≤0.08≤1.00≤2.00≤0.035≤0.039.0~12.017.0~19.0 ≥5C% 50Cr18Ni11Nb≤0.08≤1.00≤2.00≤0.035≤0.039.0~13.017.0~19.0 Nb≥10C%60Cr17Ni12Mo2≤0.08≤1.00≤2.00≤0.035≤0.0310.0~14.016.0~18.52.0~3.0 700Cr17Ni14Mo2≤0.03≤1.00≤2.00≤0.035≤0.0312.0~15.016.0~18.02.0~3.0 80Cr18Ni12Mo2Ti≤0.08≤1.00≤2.00≤0.035≤0.0311.0~14.016.0~19.01.8~2.55C%~0.7 91Cr18Ni12Mo2Ti≤0.12≤1.00≤2.00≤0.035≤0.0311.0~14.016.0~19.01.8~2.55(C%-0.02)~0.8 100Cr18Ni12Mo3Ti≤0.08≤1.00≤2.00≤0.035≤0.0311.0~14.016.0~19.02.5~3.55C%~0.7 111Cr18Ni12Mo2Ti≤0.12≤1.00≤2.00≤0.035≤0.0311.0~14.016.0~19.02.5~3.55(C%-0.02)~0.8 121Cr18Ni9Ti≤0.12≤1.00≤2.00≤0.035≤0.038.0~11.017.0~19.0 5(C%-0.02)~0.8 130Cr19Ni13Mo3≤0.08≤1.00≤2.00≤0.035≤0.0311.0~15.018.0~20.03.0~4.0 1400Cr19Ni13Mo3≤0.03≤1.00≤2.00≤0.035≤0.0311.0~15.018.0~20.03.0~4.0 1500Cr18Ni10N≤0.03≤1.00≤2.00≤0.035≤0.038.5~11.517.0~19.0 N:0.12~0.22160Cr19Ni9N≤0.08≤1.00≤2.00≤0.035≤0.037.0~10.518.0~20.0 N:0.10~0.25170Cr19Ni10NbN≤0.08≤1.00≤2.00≤0.035≤0.037.5~10.518.0~20.0 Nb≤0.15N:0.15~0.30180Cr23Ni13≤0.08≤1.00≤2.00≤0.035≤0.0312.0~15.022.0~24.0 190Cr25Ni20≤0.08≤1.00≤2.00≤0.035≤0.0319.0~22.024.0~26.0 2000Cr17Ni13Mo2N≤0.03≤1.00≤2.00≤0.035≤0.0311.0~14.516.0~18.52.0~3.0 0.12~0.22210Cr17Ni12Mo2N≤0.08≤1.00≤2.00≤0.035≤0.0310.0~14.016.0~18.02.0~3.0 0.10~0.22220Cr18Ni12Mo2Cu2≤0.08≤1.00≤2.00≤0.035≤0.0310.0~14.517.0~19.01.2~2.75 Cu:1.0~2.52300Cr18Ni14Mo2Cu2≤0.03≤1.00≤2.00≤0.035≤0.0312.0~16.017.0~19.01.2~2.75 Cu:1.0~2.5铁素体型241Cr17≤0.12≤0.75≤1.00≤0.035≤0.03*16.0~18.0 马氏体型250Cr13≤0.08≤1.00≤1.00≤0.035≤0.03*11.5~13.5 奥-铁双相钢260Cr26Ni5Mo2≤0.08≤1.00≤1.50≤0.035≤0.033.0~6.023.0~28.01.0~3.0 2700Cr18Ni5Mo3Si2≤0.031.3~2.01.0~2.0≤0.035≤0.034.5~5.518.0~19.52.5~3.0

看看新表比较一下得知GB/T14976-2002规范GB/T14976-2012规范 奥氏体型序号2002商标添加一致代号2012新商标首要变化11Cr18Ni9S3021012Cr18Ni9 20Cr18Ni9S3040806Cr19Ni10铬元素添加了一个300Cr18Ni10S30403022Cr19Ni10 40Cr19Ni9NS3045806Cr19Ni10N 50Cr19Ni10NbNS3047806Cr19Ni10NbN 600Cr18Ni10NS30453022Cr19Ni10N 70Cr23Ni13S3090806Cr23Ni13 80Cr25Ni20S3100806Cr25Ni20 90Cr17Ni12Mo2S3160806Cr17Ni12Mo2 1000Cr17Ni14Mo2S31603022Cr17Ni12Mo2镍元素一致为12个11 S3160907Cr17Ni12Mo2 120Cr17Ni12Mo2TiS3166806Cr17Ni12Mo2Ti 130Cr17Ni12Mo3NS3165806Cr17Ni12Mo3N 1400Cr17Ni12Mo3NS31653022Cr17Ni12Mo3N 150Cr18Ni12Mo2Cu2S3168806Cr18Ni12Mo2Cu2 1600Cr18Ni14Mo2Cu2S31683022Cr18Ni14Mo2Cu2 170Cr19Ni13Mo3S3170806Cr19Ni13Mo3 1800Cr19Ni13Mo3S31703022Cr19Ni13Mo3 190Cr18Ni10TiS3216806Cr18Ni11Ti钛元素添加一个201Cr18Ni9TiS3216907Cr19Ni11Ti钛元素添加一个210Cr18Ni11NbS3477806Cr18Ni11Nb 22 S3477907Cr18Ni12Nb 23 S1134806Cr13AI 24 S11363022Cr11Ti 25 S1151010Cr15 铁素体261Cr17S1171010Cr17 27 S11863022Cr18Ti 28 S11972019Cr19Mo2NbTi 马氏体29 S4031006Cr13 30 S4101012Cr13 31 S4202020Cr13 首要是商标本来表明碳含量数字有0改为06,00改为022,还有就是常用的304原料铬元素添加了一个。316L的镍元素一致改12个镍的。2、添加了钢部分商标3、添加了按小壁厚的交货方法，和无缝不锈钢管的尺度允许误差。看下表14976-2002的表格 一般级高档 一般级高档公称外径D68~159>159~426±1.25%D±1.5%D±1.0%D公称外径D6~10>10~30>30~50>50±0.2±0.3±0.4±0.9%D±0.15±0.203±0.30±0.8%D公称壁厚S<15+15%S-12.5%S±12.5%S公称壁厚S≤3±14%S+12.5%S-10%S公称壁厚S≥15+20%S-15%S±12.5%S公称壁厚S>3+12.5%S-10%S±10%S新表准外径添加50-457mm的允许误差。 壁厚有本来的≤3的±14%改为±12%±，﹢12.5%改为﹢10%，

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