无缝钢管检验实验计划

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Inspection and 每炉
(identification Stencil or stamp) material
Cutting
certificate,
管坯检验及下

100%
surface quality 炉号,钢号,长度,表面质量
Paper report 书面记录
Repair or reject 返修或判废
Chemical Requirement 化学成分要求
(Weight 重量% )
Chemical
Grade
Analysis 钢级
C
Si
Mn
P
S
Cr
Mo
V
化学成分
min
B
max
0.30
1.20
0.05 0.045 0.40
0.15
0.08
Cu
Ni
B
min
max
0.40
0.40
注:Cu+Ni+Cr+Mo+V≤1.00%
Ite
Process
Inspection 检验
m Description
No. or Q.C. Activity Frequency
序 过程描述/质量控 频率

制措施
Verifying (Document)/Item 确认(文件)/项
Nonconformity handling 不符合项处理
Client 客户 In
H
CR
W+R
Inspection for Beginning
when
pipe body (MFL every shift 每 Visual and Dimensional Inspection 肉眼和尺寸检查:
possible,
L4)
班的开始
1.OD tolerance 外径公差: (±1%D)
Remainin
Nonconformity handling 不符合项处理
Inspection 检验
Client 客户 In
Hous Activity TPI e 厂方 活动 第三方
11 Mechanical Testing 机械性能测试
Tensile (拉伸)
2/Lot
Tensile test is showed as follows: 伸测试见下表
Hous Activity TPI e 厂方 活动 第三方
12 Non Destructive
100%
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Inspection 检验
Client 客户 In
Hous Activity TPI e 厂方 活动 第三方
H

W+R
Ite
Process
m Description
No. or Q.C. Activity Frequency
序 过程描述/质量控 频率

制措施
Verifying (Document)/Item 确认(文件)/项
6 Heating
in
circular furnace
环形炉加热炉
According to heating schedule 依照加热制度执行
Inspection 检验
Client 客户 In
Hous Activity TPI e 厂方 活动 第三方
H

W
H

R
H

R
H

R
Ite
Process
m Description
Process
m Description
No. or Q.C. Activity Frequency
序 过程描述/质量控 频率

制措施
Verifying (Document)/Item 确认(文件)/项
Nonconformity handling 不符合项处理
General 总体
Working shift report shall be recorded at each item. 每一工序要有每班记录
序 过程描述/质量控 频率

制措施
Verifying (Document)/Item 确认(文件)/项
Nonconformity handling 不符合项处理
13 Out and inside
surface
Every
inspection
piece
钢管内外表面 逐支
检查
No burr in the end,管端应无毛刺;
ment 如果 可以的话 就进行修 磨,测量剩
bodies by body with 6 readings at each section.管端壁厚用千分尺测量,管体 余壁厚,修
manual ultrasonic. 所 有的管子两 端测壁厚用 千分尺,管体
用手提超声测厚仪测量。 3. Pipe body bend degree 管体弯曲度: 0.20% of the pipe length 管长的 0.20% Measured with a taught line 用张紧的线进行测量 Pipe end bend degree 管端弯曲度: Should not be
rolling
shift
检查芯棒的表面质量
穿孔,轧制
每班 8 小时
8 Slight-stretch reduction 微张力减径
According OD and WT checking
to
site 检验外径及壁厚尺寸
conditions
根据现场情

9 Sampling for 2 per lot of Make two specimens for each lot of Take new samples 另取样
pipe body 管体 200pcs samples and mark furnace batch No.
取样
2/批(200 on them. (Sample, mark and stamp
支)
according to APT 5L standard. )
每组试样做成两个试片并且在试样上用
记号笔标明具体炉批号(做标记及做钢
每批取两个 试样进行试 验
板状试样 Strip sample
屈服(Rt0.5) ≥240
Re-test, H

re-heat
treatment
加倍重测;
或判废
W+R
抗拉强度 Rm ≥415
伸长率 A
E≥30
flattening test 压扁试验
压扁要求:至 H 距离 1/batch
每批取一个 试样
尺寸检验和外 WT of all 2.WT tolerance 壁厚公差:(+12.5%t, -12.5%t)
g WT
观检查
pipe ends The WT at any point of the pipe shall be more than 87.5% of measure
measured
by
micrometer,
Nonconformity handling 不符合项处理
3 Heat Analysis 1/batch 熔炼分析 1/每炉钢
Product analysis adopts Chemical Change the material Spectrometry analysis, which is in 更换材料 accordance with the chemical requirements. Work out the carbon equivalent according to product analysis report. 化学光谱分析,熔炼成分符合化学成分 要求。
all
pipe
nominal wall thickness.在任何部位管子的壁厚都不得低于标称壁 厚的 87.5%。
WT on pipes ends is measured with micrometer.
Wall thickness measuring on pipe body is performed by manual UT for WT covering 3 rings or section all along the pipe
Client 客户 In
Hous Activity TPI e 厂方 活动 第三方



H


H


Ite
Process
m Description
No. or Q.C. Activity Frequency
序 过程描述/质量控 频率

制措施
Verifying (Document)/Item 确认(文件)/项
印,钢印做批号的后两位)
Inspection 检验
Client 客户 In
Hous Activity TPI e 厂方 活动 第三方
H

R
H

R
H

W
Ite
Process
m Description
No. or Q.C. Activity Frequency
序 过程描述/质量控 频率