Cold Drawn ASTM A312 AISI 201 304 304L Seamless/Welded Stainless Steel Round Tube/Pipe

Cold Drawn ASTM A312 AISI 201 304 304L Seamless/Welded Stainless Steel Round Tube/Pipe

In general, professional authoritative testing institutions are divided into the following parts to determine whether 304 stainless steel pipe is qualified:
1. Surface quality
It is generally required that the outer surface of the pipe should be clean, without cracks, folding, stratification, pickling traces and oxide iron sheet. The surface roughness of the circular tube shall not be lower than Ra0.8.
2. Size deviation
Detection unit has standard requirement to the outside diameter and wall thickness of pipe material, but different application scope can have different requirement, specific should be asked when purchasing.
3. Appearance quality
The two ends of the pipe should be perpendicular to the axis of the pipe and should be smooth. Minor deformations and minor defects due to the cutting method are allowed.
4. Mechanical properties and process properties
Tensile strength, yield strength and elongation after fracture are the main factors to determine the mechanical properties of a pipe, which are related to whether it can be processed or applied in some fields. The flattening test is to test the process performance, to see if there are cracks and cracks when the steel pipe diameter is flattened to 2/3.
Chemical composition
Detection of chemical composition is the most direct determination of a pipe is authentic 304 stainless steel pipe.
6. Corrosion resistance
This is a performance point that consumers are very concerned about, and it is also one of the natural characteristics of stainless steel. So corrosion resistance is also a key detection unit of data.

Advantage one: health and environmental protection

The inner wall of stainless steel conduit is smooth, although use for a long time also do not knot scale, do not suffer bacterial pollution, need not worry about water quality is affected, can avoid water effectively the secondary pollution. After the immersion test, all the indicators are in line with the national drinking water standards. Accordingly, choose conduit of 304 stainless steel to be helpful for health more.

Advantage two: corrosion resistance

304 stainless steel pipe is one of the most widely used chrome-nickel alloy, all because of its chemical performance is more stable, so 304 stainless steel pipe is in the performance of anti-corrosion respect more outstanding.

Advantage three: high toughness

304 stainless steel has the characteristics of good processing performance and high toughness, so 304 stainless steel pipeline in the production process is higher than the quality of ordinary stainless steel.

Advantage four: high temperature resistance

304 stainless steel tube is more resistant to high temperature than ordinary stainless steel tube. For example, the high temperature of 800℃ is within the tolerance range of 304 stainless steel water pipes, but ordinary stainless steel water pipes may be damaged by this temperature.