Density: 7.93 g/cm³
Outer diameter:12.7 to 1219mm,1/4"-48"
Wall Thickness: 0.1 to 60mm,sch5s-sch160
Length:1-12m
Surface: black,pickling,hairline,180 and 240 grits,6K,8K.
Packing: Woven bag,wooden box or as required
Standard: ASTM A213 (ASME SA213), ASTM A249 (ASME SA249),ASTM A269 (ASME SA269),ASTM A312 (ASME SA312),ASTM A511 (ASME SA511),ASTM A554 (ASME SA554),JIS, BS, EN, DIN etc
304 stainless steel material has strong corrosion resistance in nitric acid below the boiling temperature of ≤ 65%. It also has good corrosion resistance to alkaline solutions and most organic and inorganic acids. A high alloy steel alloy steel that resists corrosion in air or chemically corrosive media.
304 stainless steel pipe can be used in general chemical equipment, atomic energy industrial equipment.
The anti-rust performance of 304 stainless steel is stronger than that of 200 series stainless steel. High temperature resistance is also good, can be as high as 1000-1200 degrees. 304 stainless steel has excellent stainless corrosion resistance and good resistance to intergranular corrosion.
304L is ultra-low carbon stainless steel with carbon content reduced to less than 0.03% to avoid intergranular corrosion
H in 304H refers to high temperature, high carbon content is the guarantee of high temperature strength. GB150 requires austenitic steel to be used at 525 degrees or more, the carbon content is not less than 0.04%, and carbide is strengthening phase, especially high temperature strength. Better than pure austenite.
Round tube billet → heating → perforation → head → annealing → pickling → oiling (copper plating) → multi-pass cold drawing (cold rolling) → blank tube → heat treatment → straightening → hydraulic test (inspection) → mark → in Library.
Chemical composition:
| Grade | UNS | Chemical Component % | ||||||
| C | Mn | P | S | Si | Ni | Cr | ||
| TP304 | S30400 | 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 8.0-11.0 | 18.0-20.0 |
| TP304L | S30403 | 0.035 | 2.00 | 0.045 | 0.03 | 1.00 | 8.0-13.0 | 18.0-20.0 |
| TP304H | S30409 | 0.04~0.10 | 2.00 | 0.045 | 0.03 | 1.00 | 8.0-11.0 | 18.0-20.0 |
Mechanical properties:
Type
TENSILE STRENGTH (Mpa)
YIELD STRENGTH (Mpa)
ELONGATION (2INCH)
HARDNESS
HV
HB
304
≥515
≥205
≥40
≥201
≥92
304L
≥485
≥170
≥40
≥201
≥92
304H
≥515
≥205
≥40
≥201
≥92
Packing for stainless steel pipe:
With tube cap in woven bag or wooden box
All the material would be tested before shipping:
1. Measurement test
2. Chemical composition test
3. Ultrasonic test
4. Eddy current testing
Available 304 pipe types:
304 304L stainless steel seamless pipe
304 304L stainless steel welded pipe
304 304L stainless steel capillary tube
304 304L stainless steel coiled tubing
304 304L stainless steel U-tube
304 304L stainless steel square tube