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浙江不锈钢管生产厂家整理 自从2012年国家发布不锈钢管生产执行标准GB/T14976-2012以来，市场上销售的不锈钢管喷码一片混乱，2012版本和2002版本都有，好多用户都搞不懂新版本比旧版本都有什么地方改变。下面我们通过对比来详细的分析一下。 GB/T14976-2012本标准参照ASTMA268/A269M《一般用途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《一般用途无缝和焊接铁素体和马氏体不锈钢管》的修订。主要目的还是与国际标准化接轨。因为中国加入了WTO世贸组织。 1、按GB/T20878-2007修改了钢的牌号和化学成分：下面我们来看表一 | 组织类型 | 序
号 | 牌号 | 化学成分（质量分数）/% | | C | Si | Mn | P | S | Ni | Cr | Mo | Ti | 其他 | 奥
氏
体
型
不
锈
钢 | 1 | 0Cr18Ni9 | ≤0.07 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 8.0~11.0 | 17.0~19.0 | | | | | 2 | 1Cr18Ni9 | ≤0.15 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 8.0~10.0 | 17.0~19.0 | | | | | 3 | 00Cr19Ni10 | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 8.0~12.0 | 18.0~20.0 | | | | | 4 | 0Cr18Ni10Ti | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 9.0~12.0 | 17.0~19.0 | | ≥5C% | | | 5 | 0Cr18Ni11Nb | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 9.0~13.0 | 17.0~19.0 | | | Nb≥10C% | | 6 | 0Cr17Ni12Mo2 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 10.0~14.0 | 16.0~18.5 | 2.0~3.0 | | | | 7 | 00Cr17Ni14Mo2 | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 12.0~15.0 | 16.0~18.0 | 2.0~3.0 | | | | 8 | 0Cr18Ni12Mo2Ti | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 11.0~14.0 | 16.0~19.0 | 1.8~2.5 | 5C%~0.7 | | | 9 | 1Cr18Ni12Mo2Ti | ≤0.12 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 11.0~14.0 | 16.0~19.0 | 1.8~2.5 | 5(C%-0.02)~0.8 | | | 10 | 0Cr18Ni12Mo3Ti | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 11.0~14.0 | 16.0~19.0 | 2.5~3.5 | 5C%~0.7 | | | 11 | 1Cr18Ni12Mo2Ti | ≤0.12 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 11.0~14.0 | 16.0~19.0 | 2.5~3.5 | 5(C%-0.02)~0.8 | | | 12 | 1Cr18Ni9Ti | ≤0.12 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 8.0~11.0 | 17.0~19.0 | | 5(C%-0.02)~0.8 | | | 13 | 0Cr19Ni13Mo3 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 11.0~15.0 | 18.0~20.0 | 3.0~4.0 | | | | 14 | 00Cr19Ni13Mo3 | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 11.0~15.0 | 18.0~20.0 | 3.0~4.0 | | | | 15 | 00Cr18Ni10N | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 8.5~11.5 | 17.0~19.0 | | | N:0.12~0.22 | | 16 | 0Cr19Ni9N | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 7.0~10.5 | 18.0~20.0 | | | N:0.10~0.25 | | 17 | 0Cr19Ni10NbN | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 7.5~10.5 | 18.0~20.0 | | | Nb≤0.15
N:0.15~0.30 | | 18 | 0Cr23Ni13 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 12.0~15.0 | 22.0~24.0 | | | | | 19 | 0Cr25Ni20 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 19.0~22.0 | 24.0~26.0 | | | | | 20 | 00Cr17Ni13Mo2N | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 11.0~14.5 | 16.0~18.5 | 2.0~3.0 | | 0.12~0.22 | | 21 | 0Cr17Ni12Mo2N | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 10.0~14.0 | 16.0~18.0 | 2.0~3.0 | | 0.10~0.22 | | 22 | 0Cr18Ni12Mo2Cu2 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 10.0~14.5 | 17.0~19.0 | 1.2~2.75 | | Cu:1.0~2.5 | | 23 | 00Cr18Ni14Mo2Cu2 | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.035 | ≤0.03 | 12.0~16.0 | 17.0~19.0 | 1.2~2.75 | | Cu:1.0~2.5 | | 铁素体型 | 24 | 1Cr17 | ≤0.12 | ≤0.75 | ≤1.00 | ≤0.035 | ≤0.03 | * | 16.0~18.0 | | | | | 马氏体型 | 25 | 0Cr13 | ≤0.08 | ≤1.00 | ≤1.00 | ≤0.035 | ≤0.03 | * | 11.5~13.5 | | | | 奥-铁
双相钢 | 26 | 0Cr26Ni5Mo2 | ≤0.08 | ≤1.00 | ≤1.50 | ≤0.035 | ≤0.03 | 3.0~6.0 | 23.0~28.0 | 1.0~3.0 | | | | 27 | 00Cr18Ni5Mo3Si2 | ≤0.03 | 1.3~2.0 | 1.0~2.0 | ≤0.035 | ≤0.03 | 4.5~5.5 | 18.0~19.5 | 2.5~3.0 | | |
看看新表比较一下得知
| GB/T14976-2002标准 | GB/T14976-2012标准 | | | 奥氏体型 | 序号 | 2002牌号 | 增加统一代号 | 2012新牌号 | 主要变化 | | | 1 | 1Cr18Ni9 | S30210 | 12Cr18Ni9 | | | | 2 | 0Cr18Ni9 | S30408 | 06Cr19Ni10 | 铬元素增加了一个 | | | 3 | 00Cr18Ni10 | S30403 | 022Cr19Ni10 | | | | 4 | 0Cr19Ni9N | S30458 | 06Cr19Ni10N | | | | 5 | 0Cr19Ni10NbN | S30478 | 06Cr19Ni10NbN | | | | 6 | 00Cr18Ni10N | S30453 | 022Cr19Ni10N | | | | 7 | 0Cr23Ni13 | S30908 | 06Cr23Ni13 | | | | 8 | 0Cr25Ni20 | S31008 | 06Cr25Ni20 | | | | 9 | 0Cr17Ni12Mo2 | S31608 | 06Cr17Ni12Mo2 | | | | 10 | 00Cr17Ni14Mo2 | S31603 | 022Cr17Ni12Mo2 | 镍元素统一为12个 | | | 11 | | S31609 | 07Cr17Ni12Mo2 | | | | 12 | 0Cr17Ni12Mo2Ti | S31668 | 06Cr17Ni12Mo2Ti | | | | 13 | 0Cr17Ni12Mo3N | S31658 | 06Cr17Ni12Mo3N | | | | 14 | 00Cr17Ni12Mo3N | S31653 | 022Cr17Ni12Mo3N | | | | 15 | 0Cr18Ni12Mo2Cu2 | S31688 | 06Cr18Ni12Mo2Cu2 | | | | 16 | 00Cr18Ni14Mo2Cu2 | S31683 | 022Cr18Ni14Mo2Cu2 | | | | 17 | 0Cr19Ni13Mo3 | S31708 | 06Cr19Ni13Mo3 | | | | 18 | 00Cr19Ni13Mo3 | S31703 | 022Cr19Ni13Mo3 | | | | 19 | 0Cr18Ni10Ti | S32168 | 06Cr18Ni11Ti | 钛元素增加一个 | | | 20 | 1Cr18Ni9Ti | S32169 | 07Cr19Ni11Ti | 钛元素增加一个 | | | 21 | 0Cr18Ni11Nb | S34778 | 06Cr18Ni11Nb | | | | 22 | | S34779 | 07Cr18Ni12Nb | | | | 23 | | S11348 | 06Cr13AI | | | | 24 | | S11363 | 022Cr11Ti | | | | 25 | | S11510 | 10Cr15 | | | 铁素体 | 26 | 1Cr17 | S11710 | 10Cr17 | | | | 27 | | S11863 | 022Cr18Ti | | | | 28 | | S11972 | 019Cr19Mo2NbTi | | | 马氏体 | 29 | | S40310 | 06Cr13 | | | | 30 | | S41010 | 12Cr13 | | | | 31 | | S42020 | 20Cr13 | | 主要是牌号原来表示碳含量数字有0改为06,00改为022,还有就是常用的304材质铬元素增加了一个。316L的镍元素统一改12个镍的。
2、增加了钢部分牌号
3、增加了按最小壁厚的交货方式，和无缝不锈钢管的尺寸允许偏差。
看下表14976-2002的表格 | | | | | | | | | | | 普通级 | 高级 | | | 普通级 | 高级 | 公称外径
D | 68~159
>159~426 | ±1.25%D
±1.5%D | ±1.0%D | 公称外径
D | 6~10
>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 | 新表准外径增加50-457mm的允许偏差。
壁厚有原来的≤3的±14%改为±12%±，﹢12.5%改为﹢10%，
3删除了标记示例，和双相钢牌号及相关内容，修改了钢管的试验要求。 浙江不锈钢管生产厂家 温州不锈钢管生产厂家
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