spiral pipe holes The spiral Angle of the spiral welded pipe weld is generally 50-75 degrees, so the synthetic stress at the spiral welded seam is 60-85% of the main stress of the straight welded pipe.Under the same working pressure, the wall thickness of spiral welded pipe with the same diameter can be reduced than that of straight welded pipe.
spiral pipe holes
|Product Name||welded spiral steel pipe|
|Material||Q235A, Q235B, Q345, L245, L290, API5L X42,X52,X60,X70,X80, OCr13,1Cr17,00Cr19Ni11,1Cr18Ni9,0Cr18Ni11Nb,ST37.0, ST35.8,ST37.2,ST45,ST52,ST52.4,STP G38,STP G42,STPT42,STS49, etc...|
|Standard||SY/T5037-2000, GB/T9711.1-1997, GB/T9711.2, API-5L, SY/T5040-92, ASTM A53,A106, DIN1626,DIN1629,DIN2448,JIS G3452,JIS G3454,JIS G3455, JIS G3456,JIS G3457,JIS G3461|
|Application||Mainly used in water engineering, petroleum and natural gas industry, chemical industry, agricultural irrigation, urban construction,|
The weld wall of spiral welded steel tube is opened in the direction of main stress. After the steel tube is subjected to internal pressure, the main stress is circumferential stress.5. The impact toughness of steel tube in the rolling direction is very good, while that in the vertical rolling direction is several times different.The toughness weakness of spiral welded steel pipe avoids the main stress, but the toughness weakness of straight welded steel pipe is exactly where the main stress ACTS.
The Process Flow
has more than ten years history company which located in Lecong Iron and Steel World, a well-known steel distribution center in China, with superior geographical position and convenient water and land transportation.
We are a direct-selling manufacturer specializing in the research and development of spiral steel pipes, steel coiled pipes, anti-corrosion steel pipes inside and outside. Since its inception, the company has been guided by a brand-new thinking of steel pipe product market based on the business philosophy of honesty, pragmatism and knowledge-seeking.
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