Different environments are used to determine different materials, generally 304 stainless steel, large-diameter metal hose materials: various pipeline compensators, materials should be selected according to design requirements or corrosive media, medium temperature T.o, generally 321, 304, 316, 316 L stainless steel materials, etc.


Pressure is also a concern for users. The product is designed with pressure on the thickness of the corrugated pipe, which is not desirable for customers. The internal structural design can reduce the cost of the product for industrial use and use. The pressure range of the pipeline is also different, generally 0.1~2.5 MPa, and can be customized for special purposes, up to 30 MPa

The simplest method for identifying materials is to use magnets to absorb and attract typically iron and carbon steel in industry. Other methods include color identification, using magnets for identification, and identification, which are universal for copper sulfate with special properties. We need to use the following three methods to identify Y using steel. The simplest direct method for wear identification, annealing identification, and chemical qualitative identification is to use stainless steel solution.

Welding material: Welding electrode wire; Total number of welded joints: The total number of pipeline welded joints (including fillet welds and flange welds); Welding joint irregularity: refers to the maximum and minimum difference between the height of the welding joint and the minimum difference. Weld reinforcement layer: refers to the residual height and width of the weld seam; Edge bite: the deepest depth, appearance quality inspection conclusion: qualified or unqualified: the steel seal of the welder: multiple welders participated in this pipeline.