| 产品名称 | Stainless Steel Sanitary Tubing | 形状 | 圆形，正方形，长方形 |
|---|---|---|---|
| 标准： | 美国材料试验协会 A270 / 美国机械工程师学会 SA270 | 材料 | TP304/304L/316/316L |
| O.D.： | 25.4， 38.1， 50.8， 63.5mm.... | W.T.： | 1.2， 1.5， 2MM.... |
| 表面： | 退火，酸洗，抛光，600 粗细度抛光，光亮 | 类型 | 无缝/焊接 |
| 无损检测： | ET， HT， PT | ||
| 强光 | ASTM A270 不锈钢焊管， Sanitary Stainless Steel Welded Tube， ASTM A270M Stainless Steel Welded Tube | ||
ASTM A270 / A270M TP304 / 1.4301 / UNS S30400 Stainless Steel Sanitary Welded Tubing
同创集团 deal with stainless steel welded pipe and tube already several decades， every year sell more than 5000 tons of stainless steel pipe and tube. Our client already cover more than 45 countries. Our Stainless Steel and tube was width used in Mining， Energy， Petrochemical， Chemical Industry， Food plant， Paper plant， Gas and Fluid Industry etc.
Standard Specification for Seamless and Welded Austenitic Stainless Steel Sanitary Tubing
ASTM A270 covers grades of seamless， welded， and heavily cold worked austenitic and ferritic/austenitic stainless-steel sanitary tubing. Seamless tubes shall be manufactured by a process that does not involve welding at any stage. Welded tubes shall be made using an automated welding process with no addition of filler metal during the welding process. Heavily cold worked tubes shall be made by applying cold working of not less than 35% reduction of thickness of both wall and weld to a welded tube prior to the final anneal. No filler shall be used in making the weld.
所有材料均应以热处理状态提供。每次热处理必须对一段平轧毛坯或一根钢管进行化学分析。每根钢管均须进行机械测试，如反向压扁测试、静水压测试或无损电气测试。
ASTM A270 Sanitary Stainless Steel Tube Size Range
ASTM A270 sanitary stainless pipe usually refers to the small pipe diameters， normally from 1/2” to 2 1/2”， thickness from 0.049 in (1.24mm) to 0.15 in (3.81mm). Length can be fixed or random
ASTM A270 卡套管的最大外径为 12 英寸（304.8 毫米）。
ASTM A270 管材使用英寸磅作为标准计量单位。
壁厚公差不得超过 12.5%。
宽容 | a) 外径：+/- 0.2 毫米 |
| b) 厚度：+/- 0.02 毫米 | |
| c) 长度：+/- 5 毫米 | |
| 结束 | PE/Plain Ends， BE/Beveled Ends |
| 技术 | 冷拔 |
| 应用 | chemical industry， decoration， building， Food plant， etc. |
| 测试 | 挤压试验，扩展试验，水压试验，结晶腐烂试验，热处理，无损检测 |
ASTM A270 TP304 SS Tube Chemical Composition
| 等级 | C | 锰 | Si | P | S | Cr | 莫 | 倪 | N | |
| 304 | 分钟 | - | - | - | - | - | 18.0 | - | 8.0 | - |
| 最大 | 0.08 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | 0.10 | ||
| 等级 | 最小拉伸强度（兆帕 | 屈服强度 0.2% 抗压强度（兆帕） min | 伸长率（%，50 毫米）最小值 | 硬度 | |
| 洛氏 B (HR B) 最大值 | 最大布氏硬度 (HB) | ||||
| 304 | 515 | 205 | 40 | 92 | 201 |
Equivalent Grade of ASTM A270 TP304 SS Tube
| 等级 | UNS 编号 | 老英国 | Euronorm | 瑞典 SS | 日本 JIS | ||
| BS | En | 没有 | 名称 | ||||
| 304 | S30400 | 304S31 | 58E | 1.4301 | X5CrNi18-10 | 2332 | SUS 304 |
尺寸公差
所有尺寸均以英寸（毫米）为单位
| 尺寸 外径 | 标称墙壁 | 外径 | 长度 | 墙壁 |
| 1/2" (12.7) | 0.065" (1.65)/0.049" (1.25) | +/-0.005 (0.13) | +1/8" (3.18) - 0 | +/-10.0% |
| 3/4" (19.1) | 0.065" (1.65)/0.049" (1.25) | +/-0.005 (0.13) | +1/8" (3.18) - 0 | +/-10.0% |
| 1" (25.4) | 0.065" (1.65)/0.049" (1.25) | +/-0.005 (0.13) | +1/8" (3.18) - 0 | +/-10.0% |
| 1-1/2" (38.1) | 0.065" (1.65)/0.049" (1.25) | +/-0.008" (0.20) | +1/8" (3.18) - 0 | +/-10.0% |
| 2" (50.8) | 0.065" (1.65)/0.049" (1.25) | +/-0.008" (0.20) | +1/8" (3.18) - 0 | +/-10.0% |
| 2-1/2" (63.5) | 0.065" (1.65) | +/-0.010" (0.25) | +1/8" (3.18) - 0 | +/-10.0% |
| 3" (76.2) | 0.065" (1.65) | +/-0.010" (0.25) | +1/8" (3.18) - 0 | +/-10.0% |
| 4" (101.6) | 0.083" (2.11) | +/-0.015" (0.38) | +1/8" (3.18) - 0 | +/-10.0% |
| 6" (152.4) | 0.083" (2.11) | +/-0.030" (0.76) | +1" (25.4) - 0 | +/-10.0% |
| 6" (152.4) | 0.109" (2.77) | +/-0.030" (0.76) | +1" (25.4) - 0 | +/-10.0% |
| 8" (203.2) | 0.109" (2.77) | +0.061" (1.55)/-0.031" (0.79) | +1" (25.4) - 0 | +/-10.0% |
应用
1.工业液压
2.汽车工业
3.工业机械行业
4.工业自动化
5.轨道交通
6.热交换
7.无缝管
8.装饰工程
9.Other
