Inner flat mirror face of stainless steel weld pipe is famous for precise size、property、surface sanitation and high precision. Precision of our liquid steel pipe reach to the excellent level which outer diameter、 inner diameter and thickness is ±005mm when we cooperated with dairy product、beer、pharmacy、juice and food industry etc. Therefore, we have established fellowship due to our stable quality.
Inner flat mirror face of stainless steel weld pipe is widely used in food、dairy product、drink、brewage、pharmacy and biology project etc. Its customer group are vast. Good user basis have been set up.
The used materials cover: 304、304L、316、316Letc.
Specifications: outer diameterφ19.1-φ1148.3mm，wall thickness0.6-3.0mm.
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产品执行标准 Applied standard for product
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项 目 Item ↓
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Standard 标 准 →
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国内标准 GB
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美国标准 ASTM
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换热器管Heat-exchanger pipe
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GB151
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HG20537.2
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DL/T 712-2000
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ASTM A249
A450
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流体输送管Fluid transport pipe
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GB12771
HG20537.3
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ASTM A312
A530
A450
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给水加热器管Water-heater pipe
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ASTM A688
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管材的物理机械性能 Physical machinery property of pipe
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304
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固溶 Solid solution
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≥515
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≥205
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≥35
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193
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7.93
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304L
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固溶 Solid solution
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≥485
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≥170
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≥35
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193
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7.93
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316
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固溶 Solid solution
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≥515
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≥205
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≥35
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193
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7.98
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316L
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固溶 Solid solution
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≥485
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≥170
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≥35
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193
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7.98
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317
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固溶 Solid solution
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≥515
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≥205
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≥35
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200
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7.98
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317L
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固溶 Solid solution
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≥515
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≥205
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≥35
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200
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7.98
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热处理 Heat treatment
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钢 号
Steel grade
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加热温度℃
Heating temperature
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冷却速度
Cooling speed
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SUS 304
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＞1010
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相当于水淬 Equal to cold quench
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SUS 321
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＞920
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相当于水淬 Equal to cold quench
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SUS 304L
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＞1010
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相当于水淬 Equal to cold quench
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SUS 316
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＞1010
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相当于水淬 Equal to cold quench
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SUS 316L
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＞1010
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相当于水淬 Equal to cold quench
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公 差 Tolerance
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项 目 Item ↓
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Standard 标 准 →
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Gb151 ASTM JIS DIN
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外径
Outside Diameter
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Ⅰ级允许偏差（mm）Ⅰgrade permission wrap
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Ⅱ级允许偏差（mm）Ⅰgrade permission wrap
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＜φ19～≥φ50
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±0.10-0.25
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±0.20-0.30
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≥φ25～≤φ89
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±0.20-0.30
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±0.30-0.50
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≥φ89～≤φ129
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±0.30-0.55
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±0.40-0.80
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壁厚（Wall Thickness）
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所有尺寸(All size)±0.5%
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长度（Length）
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所有尺寸(All size)±5
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直度（Straig Htness）
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所有尺寸(All size)≤2/1000
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钢号化学成分 Chemical of steel grade
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钢 号
Steel grade
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化学成分（%）CHEMICAL COMPOSITION（%）
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c
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si
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Mn
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P
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S
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Ni
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Cr
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Mo
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中国
GB
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0Cr19Ni9
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≤0.08
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≤1.00
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≤2.00
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≤0.035
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≤0.035
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8.00～10.50
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18.00～20.00
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0Cr19Ni11
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≤0.030
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≤1.00
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≤2.00
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≤0.035
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≤0.035
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9.00～13.00
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18.00～20.00
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0Cr17Ni12Mo2
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≤0.08
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≤1.00
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≤2.00
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≤0.035
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≤0.035
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10.00～14.00
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16.00～18.00
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2.00～3.00
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0Cr19Ni14Mo2
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≤0.030
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≤1.00
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≤2.00
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≤0.035
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≤0.035
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12.00～15.00
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16.00～18.00
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2.00～3.00
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日本
JIS
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SUS304
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≤0.08
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≤1.00
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≤2.00
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≤0.040
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≤0.040
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8.00～11.00
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18.00～20.00
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SUS304L
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≤0.030
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≤1.00
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≤2.00
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≤0.040
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≤0.040
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9.00～13.00
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18.00～20.00
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SUS316
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≤0.08
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≤1.00
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≤2.00
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≤0.040
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≤0.040
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10.00～14.00
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16.00～18.00
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2.00～3.00
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SUS316L
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≤0.030
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≤1.00
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≤2.00
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≤0.040
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≤0.040
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12.00～16.00
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16.00～18.00
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2.00～3.00
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美国
ASTM
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Tp304
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≤0.08
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≤0.75
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≤2.00
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≤0.040
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≤0.040
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8.00～11.00
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18.00～20.00
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TP304L
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≤0.035
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≤0.75
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≤2.00
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≤0.040
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≤0.040
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8.00～13.00
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18.00～20.00
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Tp316
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≤0.08
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≤0.75
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≤2.00
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≤0.040
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≤0.040
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11.00～14.00
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16.00～18.00
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2.00～3.00
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TP316L
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≤0.035
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≤0.75
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≤2.00
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≤0.040
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≤0.040
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10.00～15.00
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16.00～18.00
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2.00～3.00
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Non-polished pipes
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Polished sanitary pipes
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