Anticorrosive steel pipe factory tutors you how to deal with the surface of anticorrosive spiral steel pipe; After mechanical damage occurs on the surface of anti-corrosion spiral steel pipe, we need to do it. Generally, what method do we use? Today, anti-corrosion steel pipe manufacturers share a skill!

對于表面機械損傷一般采用加套的辦法加，套由兩塊組成，兩條縱向焊縫由兩塊板條采用諾焊的辦法焊接。其優點為在鋼管的本體上沒有焊縫?？v縫為帶襯板的對接焊縫，管體本身成為上下兩塊套的襯板。無論采用哪種方法。

For surface mechanical damage, the method of adding sleeve is generally adopted. The sleeve is composed of two pieces, and the two longitudinal welds are welded by two laths by Nuo welding. The utility model has the advantage that there is no weld on the body of the steel pipe. The longitudinal seam is a butt weld with lining plate, and the pipe body itself becomes the lining plate of the upper and lower sets. Either way.

當劃痕未造成泄漏時，套與螺旋鋼管管體之間的兩道環形角焊縫不必焊接，如泄漏時，則需焊上，這時套簡直接承受液體造成的內壓，因而，在這種情況下，套簡的厚度一般不低于管壁厚。

When the scratch does not cause leakage, the two annular fillet welds between the sleeve and the spiral steel pipe body do not need to be welded. In case of leakage, they need to be welded. At this time, the sleeve is directly subjected to the internal pressure caused by liquid. Therefore, in this case, the thickness of the sleeve is generally not less than the pipe wall thickness.

上面所述的方法是在施工時發現用機械損傷的修方法。至于在操作狀態下發生泄漏時（尚未斷裂），上下兩塊套商之間一般采用螺栓連接，而且在套筒的內部有環狀的密封圈，隨著螺柱上緊，密封因壓緊在螺旋鋼管管體與套筒之間，使油、氣不致漏出，其縱向也有密封。

The method described above is a repair method for mechanical damage found during construction. In case of leakage (not yet broken) in the operating state, the upper and lower sleeves are generally connected by bolts, and there is an annular sealing ring inside the sleeve. With the tightening of the stud, the seal is pressed between the spiral steel pipe body and the sleeve, so that oil and gas will not leak out, and there is also a seal in the longitudinal direction.