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, Tianjin Daqiu Zhuangxinhong Steel Tube Co., Ltd.
, Tel: 022-58657077 58654650
, Mobile: 18222225557 13920874577
13820319757
Contact: Manager Xu, Manager Chen
, Address: Daqiuzhuang Industrial Development Zone, Tianjin
Position: Home > Products

159-3820 large-diameter thick-walled spiral steel pipe professional production

Author: Tianjin Daegu Zhuang Xinhong Pipe Source: diseinugile.com Hits: Updated: November 23, 2012 [Font: large, medium and small ]

Tags: spiral steel pipe prices




Main technical indicators of spiral steel pipe
Spiral steel pipe uses Q195, Q215, Q235 of GB700 carbon structural steel
Spiral seam high frequency welded steel pipe (unit weight) theoretical calculation table
Spiral seam submerged arc welded steel pipe (unit weight) theoretical calculation table
Our product pictures
Main quality index of spiral steel pipe


project
Conveying steel pipe
GB / T9711-1977 SY / T5037-92 SY / T5038-92
Outer diameter of pipe end D <508 \ 0.75% D
D≥508 \ 1.00% D
D <508 \ 0.75% D
D≥508 \ 1.00% D
\ 1.25% D
Wall thickness deviation D <508 + 15.0% t
-12.5% t
D≥508 + 17.5% t
-10.5% t
D <508 \ 12.5% t
DC508 \ 10.0% t
\ 12.5% t
Weld seam height ≤3.18mm 0.5-3.0mm Within ≤ 2.0mm
Outside ≤ 2.5mm
Straightness ≤0.2% L ≤0.2% L ≤0.25% L
Tube end state Bevel angle 30. --35.
Blunt edge 1.59 \ 0.79mm
Cutting slope ≤ 1.59mm
Bevel angle 30. --35.
Dull edge 1.6 \ 0.8mm
Cutting slope ≤ 1.5mm
D <813 Cutting slope ≤ 1.5mm
D≥813 Cutting slope ≤ 3.0mm
Bevel angle 30. --35.
Blunt edge 0-3mm
Cutting slope ≤ 1.5mm
Weight deviation Single + 10.0% -3.5%
Loading volume -1.75%
Single + 10.0% -3.5%
Loading volume -1.75%
Single + 10.0% -3.5%
Loading volume -1.75%
NDT Welds within 203mm from the end of the pipe shall be inspected by radiography; welds other than 203mm from the end of the pipe shall be inspected by ultrasound; ultrasonic inspection shall be used for the head weld, repair welding and circumferential welds. Butt welds, repair welds and circumferential welds are ultrasonically inspected. Butt welds, repair welds and circumferential welds are ultrasonically inspected.
hydrostatictest P = 2 [σ] t / D P = 2 [σ] t / D P = 2 [σ] t / D
Note D: nominal outside diameter of steel pipe, mm t: nominal wall thickness of steel pipe, mm
[σ] Test stress of hydrostatic test, MPa;
L: single steel pipe length P: hydrostatic test pressure, Pa
Spiral steel pipe adopts Q195, Q215, Q235 of GB700 carbon structural steel Go Top

Product Standards
Grade grade chemical composition Mechanical behavior
C Mn Si≤ S≤ P≤ σs≥MPa σs≥MPa σs≥MPa
SY / T5038
SY / T5037
SY / T9711
Q195 0.06--0.12 0.25--0.50 0.30 0.050 0.045 195 315--390 33
Q215 A 0.09--0.15 0.25--0.50 0.30 0.050 0.045 215 335--410 31
B 0.045
Q235 A 0.14--0.22 0.30--0.65 0.30 0.050 0.045 235 375--460 26
B 0.12--0.20 0.30--0.70 0.045
Spiral seam high frequency welded steel pipe (unit weight) theoretical calculation tableGo Top

6 7 8 9 10 11 12 13
Φ219 31.52 36.60 41.63 46.61 51.54 54.43 61.26 66.04
Φ273 39.51 45.92 52.28 58.60 64.86 71.07 77.24 83.36
Φ325 47.20 54.90 62.54 70.14 77.68 85.18 92.63 100.03
Φ377 54.90 63.87 72.80 81.68 90.51 99.29 108.02 116.70
Φ426 62.15 72.33 82.47 92.55 102.59 112.58 122.52 132.41
Φ478 69.84 81.31 92.73 104.10 115.42 126.69 137.01 149.08
Φ529 77.39 90.11 102.79 115.79 127.99 140.52 153.00 165.43
Spiral seam submerged arc welded steel pipe (unit weight) theoretical calculation tableGo Top

6 7 8 9 10 11 12 13
Φ219 32.02 37.10 42.13 47.11 52.04 56.93 61.76 66.54
Φ273 40.01 46.42 52.78 59.10 64.36 71.57 77.74 83.86
Φ325 47.70 55.40 63.04 70.64 78.18 85.68 93.13 100.53
Φ377 55.40 64.37 73.30 82.18 91.01 99.79 108.52 117.20
Φ426 62.65 72.83 82.97 93.05 103.09 113.08 123.02 132.91
Φ478 70.34 81.81 93.23 104.60 115.92 127.19 138.41 149.58
Φ529 77.89 90.61 103.29 115.92 128.49 141.02 153.50 165.93
Φ630 92.83 108.05 123.22 138.33 153.40 168.42 183.39 198.31
Φ720 106.15 123.59 140.97 158.31 175.60 192.84 210.02 227.16
Φ820 120.95 140.85 160.70 180.50 200.26 219.96 239.21 259.22
Φ920 135.74 158.11 180.43 202.70 224.92 247.09 269.21 291.28
Φ1020 150.54 175.37 200.16 224.89 249.58 274.22 298.81 323.34
The conventional models available from our company are:
Spiral tube ∮219-6-8 ∮720 * 6-8 ∮1120 * 8-9
Spiral tube ∮245 * 6-8 ∮820 * 6-8 ∮1220 * 8-9
Spiral tube ∮273 * 6-8 ∮325-9-10 ∮1120 * 10-18
Spiral tube ∮300 * 6-8 ∮426 * 9-10 ∮1220 * 10-18
Spiral tube ∮325 * 6-8 ∮478-9-10 ∮1320 * 10-18
Spiral tube ∮377 * 6-8 ∮529 * 9-10 ∮1420 * 10-18
Spiral tube ∮406 * 6-8 ∮560 * 9-10 ∮1520 * 10-18
Spiral tube ∮426 * 6-8 ∮630 * 9-10 ∮1620 * 10-18
Spiral tube ∮466 * 6-8 ∮720 * 9-10 ∮1720 * 12-18
Spiral tube∮478 * 6-8 ∮820 * 9-10 ∮1820 * 12-18
Spiral tube ∮529 * 6-8 ∮920 * 6-8 ∮1920 * 14-18
Spiral tube ∮560 * 6-8 ∮920-7-10 ∮2020 * 14-18
Spiral tube ∮630 * 6-8 ∮1020 * 7-10 ∮2220 * 14-18
Special specifications and types of steel pipes can be customized according to customer requirements. (Reference price) For specific price, please call us.
Executive standard: SY / T3087-1999 SY / T5037-2000 The materials are: Q235, Q345B, X42-X80 ...... Manager Xu 13820317957, 13920874577
Our factory is located in Tianjin Spiral Pipe Manufacturing Base, Tianjin Daqiuzhuang Industrial Zone, with reasonable price, convenient transportation, and excellent product quality. Welcome to negotiate by phone.
Supply all kinds of large diameter spiral tube, spiral tube, thick wall spiral tube, anti-corrosion spiral steel tube , large diameter thick wall spiral tube and other spiral tube products!
Applicable to various fields such as engineering, coal mine, textile, electric power, boiler, machinery, military industry and so on. Full material, low price, welcome to call to buy!
Large diameter spiral pipe is mainly used in water engineering, petrochemical industry, chemical industry, electric power industry, and urban construction. It is one of the twenty key products developed in China.
Product material: Q235A, Q235B, Q345, L245, L290, X42, X60, X80, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb.
The company will serve customers with high-quality products, good reputation and low prices. I would like to express my heartfelt thanks to the new and old customers who have given care and support to our company!
And sincerely hope to establish a long-term cooperative relationship with them, mutual benefit and common development.

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Tianjin Daqiu Zhuangxinhong Steel Tube Co., Ltd. All rights reserved Website construction optimization QQ: 271082786 Website background
Tel: 022-58657077 022-58654650 Mobile: 18222225557 13920874577 13820319757 Contact: Manager Xu Manager Chen Address: Daqiuzhuang Industrial Development Zone, Tianjin