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Protecting sleeve for thread in petroleum steel pipe and making process thereof

A technology for thread protection and petroleum steel pipes, which is applied in the direction of sustainable manufacturing/processing, packaging recycling, closing, etc., can solve the problems of weakening the impact resistance of the protective sleeve, disengagement of the two sets, and failure to achieve the protection effect, so as to strengthen the impact resistance Capability, easy installation and disassembly, avoiding the effect of mutual rotation

Inactive Publication Date: 2009-04-22
杨泽景
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this protective sleeve has solved the defects of the all-steel or all-plastic threaded protective sleeve to a certain extent, it still has the following problems: (1) Since the steel sleeve and the plastic sleeve are set, they are often used during transportation and loading and unloading. There is a phenomenon that two sets are disengaged; (2) Since there is a gap between the two sets, the impact resistance of the protective cover is weakened, so a good protective effect cannot be achieved

Method used

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  • Protecting sleeve for thread in petroleum steel pipe and making process thereof
  • Protecting sleeve for thread in petroleum steel pipe and making process thereof
  • Protecting sleeve for thread in petroleum steel pipe and making process thereof

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in detail:

[0034] figure 1 , figure 2 , image 3 The structure of the present invention and the structure of the metal sleeve in the present invention are shown respectively. It can be seen from the figure that the oil steel pipe thread protection sleeve of the present invention includes a metal sleeve 1 made of steel plate or iron plate and a plastic sleeve 6 arranged in the metal sleeve 1 . The metal sleeve 1 is hollow and has a flange 2 on the top; the plastic sleeve 6 is barrel-shaped, and the top 5 is integrally molded with the wall; the flange 2 of the metal sleeve 1 is connected to the The setback 3 at the edge of the top 5 of the plastic sleeve 6 is handed over, and the inner wall of the plastic sleeve 6 is provided with an internal thread, and the internal thread is adapted to the external thread at the end of the steel pipe to be protected. In order to...

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Abstract

The present invention discloses one kind of protecting casing for thread in petroleum steel pipe and its making process. The protecting casing includes one outer metal casing with inwards turned top and 4-15 axial reinforcing ribs, one inner plastic casing with inner thread with inner boss capable of being inserted into the steel pipe in the top, and one reusable filled sandwich in between. It is made through the steps of making outer metal casing, making filled layer, making plastic casing, etc. The present invention has the advantages of low making cost and high impact resistance.

Description

technical field [0001] The invention relates to a thread protection sleeve for petroleum steel pipes, more specifically, the invention relates to a thread protection sleeve for the end of petroleum steel pipes and a manufacturing method thereof. Background technique [0002] The thread protector used for the ends of petroleum steel pipes or various pipes has two setting methods: all-steel and all-plastic. The all-steel thread protector, because the thread part has not been flexibly treated, in case of excessive external impact during transportation or disassembly, the thread at the end of the steel pipe is easy to be damaged; the all-plastic thread protector, due to its strength Poor, during transportation or disassembly, in case of excessive external impact, it is easy to weaken its protective effect on steel pipes due to its own deformation. In order to overcome these defects, relevant personnel have developed a plastic-steel-combined threaded protective sleeve, which is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D59/00B29C45/14B23P15/00
CPCY02W30/80
Inventor 贾振祥杨泽景李玉杰
Owner 杨泽景
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