Active Member
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[China]
Address: 16-143, No. 26 Nankai Road Suofang Street, Xinwu Dist, Wuxi City
Contact name:Shawna
JIANGSU IRUNT STEEL GROUP CO., LTD. |
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Cold Drawn ASTM A312 AISI 201 304 304L Seamless/Welded Stainless Steel Round Tube/Pipe
| Material | Stainless Steel |
| Steel Grade | 200 Series: 201,202 300 Series: 301,304,304L,316,316L,316Ti,317L,321,309s,310s 400 Series: 409L,410,410s,420j1,420j2,430,444,441,436 Duplex Steel: 904L,2205,2507,2101,2520,2304 |
| Thickness | 0.1mm-100mm (as required) |
| Length | 6m,9m,12m (as required) |
| Surface | Pickling,Polished,Bright,Hairline |
| Technique | Cold Rolled, Hot Rolled |
| Treatment | Welded or Seamless |
| Welding Line Type | ERW,EFW,Seamless,Spiral Welded |
| Shape | Round,Square,Rectangular,Oval |
| Color | Golden/Rose Gold/Silver/Black/Red/Green/Blue/as required |
| Tolerance | 1% |
| Delivery Time | 7-10days |
| Payment Terms | T/T, L/C |
| MOQ | 1 Ton |
| Application | Food Grade,Sanitary,Exhaust,Water,Chimney,Gas |
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.
