CN203940134U

CN203940134U - Square tube

Info

Publication number: CN203940134U
Application number: CN201420025515.2U
Authority: CN
Inventors: 王立刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-01-16
Filing date: 2014-01-16
Publication date: 2014-11-12
Anticipated expiration: 2024-01-16

Abstract

The utility model discloses square tube, relate to petrochemical technology field, be specifically related to the rhs-structure of the conveying fluid of petrochemical industry use.Comprise steel pipe (1), steel pipe (1) cross section is square structure; There is steel screen layer (2) at steel pipe (1) outer surface, be wound with carbon fibre cloth layer (3) at steel screen layer (2) outer surface; The thickness of described carbon fibre cloth layer (3) is 1.3-1.5 millimeter.The square tube that the utility model has solved petrochemical industry use exists intensity low, holds yielding problem.

Description

Square tube

Technical field

The utility model relates to petrochemical technology field, is specifically related to the rhs-structure of the conveying fluid of petrochemical industry use.

Background technique

Square tube is a kind of cross section light thin wall steel pipe of square hollow, also referred to as steel cold-forming shapes.It is the shaped steel of the square cross-sectional shape size made through high frequency welding again after cold bend(ing) machine shaping taking hot rolling or cold-strip steel or roll bending as mother metal.The special heavy wall square tube of hot rolling is situation except wall thickness thickens, and its bight size and limit portion straightness all meet or exceed the level of resistance welding cold forming square tube.Square tube comprehensive mechanical property is good, and weldability is cold, and hot-working character and decay resistance are all good, have good low-temperature flexibility.

Petrochemical industry, often can use various square tubes.At present, the square tube that petrochemical industry uses exists intensity low, holds yielding shortcoming.

Summary of the invention

The utility model provides square tube, and the square tube that the utility model has solved petrochemical industry use exists intensity low, holds yielding problem.

For addressing the above problem, the utility model adopts following technological scheme: square tube, comprise steel pipe 1, and steel pipe 1 cross section is square structure; There is steel screen layer 2 at steel pipe 1 outer surface, be wound with carbon fibre cloth layer 3 at steel screen layer 2 outer surfaces; The thickness of described carbon fibre cloth layer 3 is 1.3-1.5 millimeter.

Advantage of the present utility model: 1, steel screen layer plays reinforing function, makes square tube bulk strength high, is not easy distortion; 2, carbon fibre cloth layer can be resisted acidic materials corrosion, uses square tube long service life, is suitable for petrochemical industry and uses.

Brief description of the drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is I place partial enlarged drawing in Fig. 1.

Symbol description in figure: steel pipe 1, steel screen layer 2, carbon fibre cloth layer 3.

Embodiment

By best embodiment, the utility model is described in detail below .

As shown in Figure 1-2, square tube, comprises steel pipe 1, and steel pipe 1 cross section is square structure; There is steel screen layer 2 at steel pipe 1 outer surface, be wound with carbon fibre cloth layer 3 at steel screen layer 2 outer surfaces; The thickness of described carbon fibre cloth layer 3 is 1.3-1.5 millimeter.

It is high that the utility model carbon fibre cloth used has intensity, and density is little, and thin thickness does not increase strenthening member deadweight and sectional dimension substantially.Widely applicable, be widely used in corrosivity place, carbon fibre cloth can not get rusty, and is applicable to very much using in peracid, alkali, salt and atmospheric corrosion environment.

Finally it should be noted that: obviously, above-described embodiment is only for the utility model example is clearly described, and the not restriction to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all mode of executions.And the apparent variation of being amplified out thus or variation are still among protection domain of the present utility model.

Claims

1. square tube, comprises steel pipe (1), and steel pipe (1) cross section is square structure; It is characterized in that there is steel screen layer (2) at steel pipe (1) outer surface, be wound with carbon fibre cloth layer (3) at steel screen layer (2) outer surface; The thickness of described carbon fibre cloth layer (3) is 1.3-1.5 millimeter.