Various production processes, steel pipe pile is welded billet piercing point curl, easy to square pipe welding. Various experiments as a high-pressure steel pipe pile, various fees, easy to pipe production capacity class intuitive square tube is not good, low, high productivity spiral pipe, pipe two kinds of cozy square tube side really a lot of pressure is low demand or spiral the tube is not more economical.
Are you from spiral welded pipe and seamless party knows what is the difference? Analysts growth on the global economic recovery is driving the pipe section of the rally believe that an important factor, but recently the United States, Europe and China, and the US stock market in the short term prior to higher than expected economic data, need to consider other good tube sheet market sentiment has improved.
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Deviation level of implementation and the size of the spiral
Part of the spiral steel pipe pile level of performance standards and GB level, SY standard spiral steel pipe unit / T5037-1999 spiral steel pipe, GB / T9711.1-1999 spiral pipe, GB / T9711.2-1999 and other performance indicators divided into spiral pipe
Deviation level of implementation and the size of the spiral
Steel pipe piles supporting level is divided into how many?
The outer diameter of the tube end
Deviation +2.38 mm
-0.79mmÐ <508 ± 0.75% D
D≥508 ± 1.25% ± 1.00% D D
Deviation level of implementation and the size of the spiral
GB / T9711-1997 prompt API 5L SY / T5037-2000
Thickness deviation
ð <508 + 15.0% -12.5% T (T)
D≥508 + 17.5% -10.5%, T (T) ð <508 ± 12.5% t
DC508 ± 12.5%, 10.0% T ± Ť
straight line
≤0.2% ≤0.2% L L L≤0.25%
Pipe end beveling position of 30 ° - 35 °
Weld reinforcement
Within ≤ 318 Haomi 0530 mm 2.0 mm
≤ is 2.5mm;
Daytona Beach 1.59 ± 0.79 Haomi
35 ° - ≤1.59mm indirect 30 ° bevel cutting
Daytona Beach 1.59 ± 0.79 Haomi
35 ° - ≤1.59mm indirect 30 ° bevel cutting
