Specializing in supply mine support & steel rail.
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86-13785532488
Mr Liu:
Mr Chen :
86-315-3856550
86-315-3856560
86-18831578909
Copyright:Tangshan Zhongbei Metallurgy Co., Ltd. Powered by 300.cn 冀ICP备10206333号-1
Product
Seamless pipe
Unit:kg/m
thickness
32
38
42
45
50
54
57
60
63.5
68
70
73
76
89
108
63.5
68
70
73
76
89
108
133
15
219
273
325
355
377
426
Seamless pipe is long jointless steel with hollow section. The production capacity of seamless
pipe (including special oil tube) is surpass the demand both in domestic and international
markets. There are many kinds of seamless pipe such as alloy pipe,stainless steel pipe, low
temperature pipe, high pressure boiler pipe, high pressure fertilizer pipe,oil cracking pipe,low
and medium pressure boiler tube, fluid transporting tube, common structural pipe, oil casting
pipe, line pipe, straight seam steel pipe ,spiral steel pipe,etc..
The material for making seamless pipe is round tube blank, which is cut by cutting machine to
be about one meter long and sent into furnace by conveyor belt for heating at the temperature of 1200℃.The fuel used is hydrogen and acetylene. Furnace temperature control is critical.
Then the round tubular steel blank comes to pressure piercer. Generally the piercer is a cone
type piercer, which is characterized as high production efficiency, good product quality and
big expanding amount. It can be used for several kinds of steel piercing. The pierced round
tubular blank is successively processed by three-roll cross rolling, continuous rolling and
extrusion. Then it has a tube knockout sizing and it is slotted by sizing mill at high speed
rotating of cone shape drill to form pipe . The inner diameter of the steel pipe is determined
by the drill length.
After sizing, the steel pipe is sent into cooling tower for water cooling and then it will be
straightened.
OD3
2.146
2.589
2.885
3.107
3.477
3.773
3.995
4.217
4.476
4.809
4.957
5.179
5.401
6.363
7.768
4.476
4.809
4.957
5.179
5.401
6.363
7.768
11.178
13.422
18.601
23.262
27.75
38.897
41.339
46.777
3.5
2.46
2.978
3.323
3.582
4.014
4.359
4.618
4.877
5.179
5.567
5.74
5.999
6.258
7.38
9.02
5.179
5.567
5.74
5.999
6.258
7.38
9.02
12.725
15.29
21.209
26.536
31.665
43.158
45.871
51.913
4.5
3.052
3.718
4.162
4.495
5.049
5.493
5.826
6.159
6.548
7.047
7.269
7.602
7.935
9.378
11.486
6.548
7.047
7.269
7.602
7.935
9.378
11.486
15.783
18.989
26.388
33.046
39.458
51.641
54.897
62.147
4
2.762
3.354
3.749
4.044
4.535
4.932
5.228
5.524
5.869
6.313
6.511
6.807
7.103
8.385
10.259
5.869
6.313
6.511
6.807
7.103
8.385
10.259
14.261
17.146
23.805
29.797
35.568
47.406
50.39
57.036
5
3.329
4.069
4.582
4.932
5.549
6.042
6.412
6.782
7.214
7.768
8.015
9.385
8.755
10.358
12.701
7.214
7.768
8.015
8.385
8.755
10.358
12.701
17.294
20.821
28.959
36.283
43.337
6
3.847
4.735
5.327
5.771
6.511
7.103
7.546
7.99
8.508
9.174
9.47
9.914
10.358
12.281
15.093
8.508
9.174
9.47
9.914
10.358
12.281
15.093
6.5
4.088
5.049
5.691
6.172
6.973
7.614
8.095
8.576
9.137
7
7.423
8.114
8.632
9.149
9.751
8
8.286
9.075
9.667
10.259
10.95
8.5
8.699
9.538
10.167
10.796
11.529
9 10 12
5.5
3.594
4.408
4.951
5.358
6.036
6.578
6.985
7.392
7.867
8.477
8.749
9.156
9.563
11.326
13.903
7.867
8.477
8.749
9.156
9.563
11.326
13.903
18.792
22.639
39.508
47.202
Seamless pipe
Mr.Chen:86-18831578909、86-315-3856656