Related options of HDPE Krah pipe machine

The Krah machine is especially divided into 2 major categories: one is that the common high-frequency pipe fastening machine, the opposite is that the chrome steel Krah machine, the high-frequency pipe fastening machine is especially accustomed to manufacture varied iron pipes, water pipes, etc.; and also the chrome steel Krah machine, it's chiefly accustomed manufacture varied chrome steel ornamental pipes, like step banister pipes, anti-theft doors, and windows pipes, step banister pipes, guardrails, etc., and might conjointly manufacture varied automobile exhaust pipes, device pipes, and fluids. Pipes, edible pipes, etc. What square measures the relevant characteristics of the HDPE Krah pipe machine? Next, allow us to take a glance.

Here is that the content:

l Strength characteristics

l Static pressure blasting strength

Strength characteristics

When the pipe of the HDPE Krah pipe machine is subjected to internal pressure, 2 main stresses square measure typically generated on the pipe wall, particularly radial stress δY and axial stress δX. The composite stress at the weld of HDPE Krah pipe machine is δ=δY(l/4sin2α+cos2α) 1/2, wherever is that the angle of the weld of the Krah machine spiral welded pipe.

The angle of the spiral welded pipe weld created by the HDPE Krah pipe machine is usually 50-75 degrees, and the artificial stress at the spiral weld is 60-85% of the principal stress of the longitudinal welded pipe. Below constant operating pressure, the wall thickness of spiral welded pipe created by HDPE Krah pipe machine of constant pipe diameter is often smaller than that of straight seam welded pipe.

According to the higher than characteristics:

A. Krah machine spiral welded pipe is blasted, as a result of the conventional stress and also the composite stress of the weld square measure comparatively tiny, the blasting gap usually doesn't originate at the spiral weld, and its safety is over that of the straight seam welded pipe.

B. Once there square measure parallel defects close to the spiral weld of the HDPE Krah pipe machine, as a result of the spiral weld is a smaller amount stressed, the danger of its enlargement isn't as nice as that of a straight weld.

C. Since the radial stress is that the most stress existing on the Krah pipe machine steel pipe, the HDPE Krah pipe machine can bear the most load once the weld seam is within the direction of the vertical stress. That is, the load borne by the straight seam is that the largest, and also the load borne by the circumferential HDPE Krah pipe machine fastening seam is that the smallest, and also the spiral seam is between the 2.

Static pressure blasting strength

Related comparative tests have verified that the yield pressure of the spiral welded pipe and also the longitudinal welded pipe created by the HDPE Krah pipe machine is in keeping with the particular and theoretical values of the burst pressure, and also the deviation is shut. However, whether or not it's yield pressure or burst pressure, the spiral welded pipe created by the HDPE Krah pipe machine is below that of a straight seam welded pipe. The blasting check conjointly showed that the circumferential deformation rate of the spiral welded pipe blasting gap was considerably larger than that of the straight seam welded pipe. This proves that the plastic deformation ability of the spiral welded pipe created by the HDPE Krah pipe machine is healthier than that of the straight seam welded pipe. The blasting gap is usually restricted to 1 pitch, which is caused by the spiral welded seam restraining the enlargement of the crack.

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