-
Pre-bending quality control of ssaw steel pipe for piling is on both sides of the steel sheet bending quality, including: after pre-bending bending radius edge of the plate reaches a radius of piling pipe; both sides of the curved equal to the width consistent degree of bending, symmetrical parallel, parallelism specified the range; within the scope of pre-bending radius of curvature of each point in a predetermined, and everywhere along the board edge in the same direction; pre-bent plate edge does not exist after the chicane, there was no wave shape, straightness within a predetermined range.
Preflex piling pipe production line is one of the primary process, the purpose is to complete both sides of the plate pre-bending, bending radius on both sides of the steel sheet at or near the radius of the steel pipe production specifications, thus ensuring the geometry and dimensions of spiral steel pipe weld area accuracy. If there is no pre-bending in the UOE molding, O-molding press, even when the compression ratio has been about 1% of the steel edges will still be straight section, resulting tube was formed after the beak Peach, subsequent to the pre-weld seam trouble, can lead to the wrong side or welding burn, even after expanding, it can not be eliminated, and also damage the enlarged diameter head.
-
According spiral pipe corrosion mechanism, and it has so far proposed a variety of protective measures, such protective measures basically be divided into the following types:
1, For the environment among the harmful substances from outside to inside gradually invasive characteristics, including permeability to adopt a series of technical control template, water spray material, impermeable layers, polymer modified mortar and the like.
2, For the nature of the electrochemical corrosion of steel, steel to eliminate the use of chemical principles of fundamental electrochemical corrosion. This type of measure such as cathodic protection, electrochemical desalination (again simplified) and technology can improve the rust inhibitor of steel corrosion resistance.
3, The use of hard or corrosion resistant material wrapped or coated on the surface of steel, such as layers of reinforced epoxy, steel and other stainless steel cladding.
4, The use of low water conservation fully wet glue double-doped high-performance concrete, can significantly improve the permeability of salt. In this concrete layer having an appropriate thickness of the protective layer is to improve the durability of the basic measures.
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CARBON STEEL SEAMLESS PIPE;
SPEC API 5L Gr. B /ASTM A106 /A53 GR.B; /BUTTWELD END ASME B16.25 (NACE MR-01-75)
Item
Code
DESCRIPTION
Carbon steel pipes
Q'ty Mtrs
Q'ty
Pcs
Unit Weight kg/m
Unit Price USD/TON
Stock in SGP (Ton)
Stock in CHN(Ton)
Stock in Total (Ton)
01
PCSA-0001
1/2"
SCH
80/XS
12000
2000
1.62
760.00
19.44
19.440
02
PCSA-0002
3/4"
SCH
80/XS
4200
700
2.20
705.00
9.24
9.240
03
PCSA-0003
1"
SCH
40/STD
600
100
2.50
655.00
1.50
1.56
3.060
04
PCSA-0004
1"
SCH
80/XS
24000
4000
3.24
665.00
77.76
77.760
05
PCSA-0005
1-1/4"
SCH
80/XS
3000
500
4.47
630.00
13.41
13.410
06
PCSA-0006
1-1/4"
SCH
160
600
100
5.61
630.00
3.37
3.366
07
PCSA-0007
1-1/2"
SCH
80/XS
19800
3300
5.41
630.00
107.12
107.118
08
PCSA-0008
1-1/2"
SCH
160
3900
650
7.25
670.00
28.28
28.275
09
PCSA-0009
2"
SCH
STD
9000
1500
5.44
630.00
48.96
48.960
10
PCSA-0010
2"
SCH
80/XS
24000
4000
7.48
630.00
179.52
179.520
11
PCSA-0011
2"
SCH
160
1920
320
11.11
705.00
21.33
5.67
26.997
12
PCSA-0012
2-1/2"
SCH
STD
3000
500
8.63
595.00
25.89
25.890
13
PCSA-0013
2-1/2"
SCH
80/XS
5640
940
11.41
595.00
64.35
64.352
14
PCSA-0014
3"
SCH
STD
13800
2300
11.29
590.00
155.80
13.55
169.350
15
PCSA-0015
3"
SCH
80/XS
16800
2800
15.27
590.00
256.54
27.58
284.114
16
PCSA-0016
4"
SCH
STD
11400
1900
16.07
565.00
183.20
115.80
298.998
17
PCSA-0017
4"
SCH
80/XS
30000
5000
22.32
565.00
669.60
521.08
1,190.683
18
PCSA-0018
5"
SCH
STD
6000
1000
21.77
565.00
130.62
72.62
203.245
19
PCSA-0019
5"
SCH
80/XS
5400
900
30.97
565.00
167.24
94.58
261.820
20
PCSA-0020
6"
SCH
STD
7200
1200
28.26
550.00
203.47
42.56
246.032
21
PCSA-0021
6"
SCH
80/XS
30000
5000
42.56
550.00
1276.80
529.11
1,805.906
22
PCSA-0022
8"
SCH
STD
4500
750
42.55
540.00
191.48
145.01
336.485
23
PCSA-0023
8"
SCH
80/XS
6600
1100
64.64
540.00
426.62
387.45
814.076
24
PCSA-0024
10"
SCH
40/STD
1800
300
60.31
540.00
108.56
46.32
154.876
25
PCSA-0025
10"
SCH
XS
1800
300
81.55
540.00
146.79
102.75
249.543
26
PCSA-0026
12"
SCH
STD
1500
250
73.88
540.00
110.82
64.28
175.096
27
PCSA-0027
12"
SCH
40
180
30
79.73
540.00
14.35
8.13
22.484
28
PCSA-0028
12"
SCH
XS
1800
300
97.46
540.00
175.43
89.47
264.896
-
CARBON STEEL SEAMLESS PIPE
SPEC API 5L Gr. B /ASTM A106 /A53 GR.B /BUTTWELD END ASME B16.25 / NACE MR-01-75
HOT DIPPED GALVANIZED
Item
Code
DESCRIPTION
Carbon steel pipes
Q'ty Mtrs
Q'ty Pcs
Unit Weight kg/m
Unit Price USD/TON
Stock in SGP (Ton)
Stock in CHN(Ton)
Stock in Total (Ton)
01
PCSB-0001
1/2"
SCH
80/XS
2760
460
1.62
965.00
4.47
4.471
02
PCSB-0002
3/4"
SCH
80/XS
1200
200
2.20
910.00
2.64
1.00
3.643
03
PCSB-0003
1"
SCH
80/XS
4560
760
3.24
860.00
14.77
3.54
18.312
04
PCSB-0004
1-1/4"
SCH
80/XS
600
100
4.47
820.00
2.68
2.682
05
PCSB-0005
1-1/2"
SCH
80/XS
3000
500
5.41
820.00
16.23
3.96
20.190
06
PCSB-0006
2"
SCH
40
1320
220
5.44
810.00
7.18
7.181
07
PCSB-0007
2"
SCH
80/XS
4020
670
7.48
810.00
30.07
3.32
33.391
08
PCSB-0008
3"
SCH
STD
1320
220
11.29
770.00
14.90
14.903
-
CARBON STEEL SEAMLESS PIPE
SPEC ASTM A106 GR-B; DIMENSION ASME B36.10 STANDARD;
BUTTWELD ENDS AS PER ASME B16.25 STANDARD
Item
Code
DESCRIPTION
Carbon steel pipes
Q'ty
Mtr
Q'ty
pcs
Unit Weight kg/m
Unit Cost USD/TON (EXW)
Stock (Ton)
01
PCSC-0001
2"(5.8m)
SCH
XXS
1160
200
13.44
480.00
15.59
02
PCSC-0002
2-1/2"
SCH
XXS
1200
200
20.39
480.00
24.47
03
PCSC-0003
3"
SCH
80 / XS
3600
600
15.29
460.00
55.04
04
PCSC-0004
3"
SCH
XXS
1200
200
27.68
490.00
33.22
05
PCSC-0005
3"
SCH
160
1200
200
21.35
490.00
25.62
06
PCSC-0006
4"
SCH
80 / XS
7200
1200
22.32
460.00
160.70
07
PCSC-0007
4"
SCH
120
1200
200
16.07
480.00
19.28
08
PCSC-0008
4"
SCH
160
1200
200
33.54
480.00
40.25
09
PCSC-0009
4"
SCH
XXS
1200
200
41.03
480.00
49.24
10
PCSC-0010
5"
SCH
80 / XS
7200
1200
39.92
460.00
287.42
11
PCSC-0011
5"(5.8m)
SCH
80 / XS
1160
200
39.92
420.00
46.31
12
PCSC-0012
5"
SCH
120
1200
200
40.28
480.00
48.34
13
PCSC-0013
5"
SCH
160
1200
200
49.11
480.00
58.93
14
PCSC-0014
5"
SCH
XXS
1200
200
30.97
480.00
37.16
15
PCSC-0015
6"(5.8m)
SCH
40 / STD
1160
200
36.14
420.00
41.92
16
PCSC-0016
6"
SCH
80 / XS
4800
800
42.56
460.00
204.29
17
PCSC-0017
6"
SCH
120
1200
200
54.20
480.00
65.04
18
PCSC-0018
6"
SCH
160
1800
300
67.56
480.00
121.61
19
PCSC-0019
6"
SCH
XXS
2400
400
79.22
480.00
190.13
20
PCSC-0020
8"
SCH
20
600
100
33.31
480.00
19.99
21
PCSC-0021
8"
SCH
80 / XS
3600
600
64.64
480.00
232.70
22
PCSC-0022
8"
SCH
XXS
600
100
107.90
480.00
64.74
23
PCSC-0023
8"(5.8m)
SCH
XXS
1160
200
107.90
480.00
125.16
24
PCSC-0024
10"
SCH
STD/S40
600
100
60.30
480.00
36.18
25
PCSC-0025
10"
SCH
XS
2400
400
81.55
480.00
195.72
26
PCSC-0026
10"
SCH
100
600
100
114.70
480.00
68.82
27
PCSC-0027
10"
SCH
140/XXS
600
100
155.10
480.00
93.06
28
PCSC-0028
10"
SCH
160
600
100
172.30
480.00
103.38
29
PCSC-0029
12"Weld
SCH
40
600
100
79.73
490.00
47.84
30
PCSC-0030
12"
SCH
XS
1200
200
97.46
490.00
116.95
31
PCSC-0031
12"(5.8m)
SCH
120/XXS
1160
200
186.90
490.00
216.80
32
PCSC-0032
12"
SCH
140
600
100
208.14
490.00
124.88
33
PCSC-0033
12"
SCH
160
600
100
238.70
490.00
143.22
34
PCSC-0034
14"
SCH
XS
600
100
107.30
520.00
64.38
35
PCSC-0035
16"(5.8m)
SCH
20
580
100
77.83
520.00
45.14
36
PCSC-0036
16"
SCH
60
600
100
160.19
520.00
96.11
37
PCSC-0037
16"
SCH
100
600
100
245.56
520.00
147.34
38
PCSC-0038
16"
SCH
120
600
100
286.64
520.00
171.98
39
PCSC-0039
16"
SCH
160
600
100
365.35
520.00
219.21
40
PCSC-0040
18"
SCH
100
480
80
254.55
520.00
122.18
41
PCSC-0041
20"
SCH
STD
480
80
117.15
520.00
56.23
42
PCSC-0042
20"
SCH
XS
480
80
155.10
520.00
74.45
43
PCSC-0043
20"(5.8m)
SCH
160
464
80
564.81
520.00
262.07
44
PCSC-0044
22"
SCH
STD
480
80
129.10
550.00
61.97
45
PCSC-0045
22"
SCH
80
480
80
373.83
550.00
179.44
46
PCSC-0046
24"
SCH
20/STD
480
80
141.12
550.00
67.74
47
PCSC-0047
26''
SCH
XS
480
80
202.72
550.00
97.31
48
PCSC-0048
28"
SCH
XS
480
80
218.69
580.00
104.97
49
PCSC-0049
32"
SCH
STD
480
80
188.80
580.00
90.62
50
PCSC-0050
32"
SCH
XS
360
60
250.60
580.00
90.22
51
PCSC-0051
38" Weld
SCH
XS
360
60
298.24
580.00
107.37