Customization: | Available |
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Type: | Stainless Steel Pipes |
Standard: | ASTM, AISI, GB, JIS, DIN, EN |
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CHEMICAL COMPOSITION (%) | ||||||||||
C | Mn | P | S | Si | Cr | Ni | Mo | N | Cu | Others |
0.030 | 1.20 | 0.035 | 0.020 | 0.80 | 24.0~ 26.0 | 6.0~ 8.0 | 3.0~ 5.0 | 0.24~ 0.32 | 0.50 | |
max | max | max | max | max | max |
CHEMICAL COMPOSITION (%) | ||||||||||
C | Mn | P | S | Si | Cr | Ni | Mo | N | Cu | Others |
0.030 | 2.0 | 0.030 | 0.020 | 1.0 | 22.0~ 23.0 | 4.5~ 6.5 | 3.0~ 3.5 | 0.14~ 0.20 | \ | |
max | max | max | max | max |
Duplex stainless steels are a family of stainless steels. These are called duplex (or austenitic-ferritic) grades because their metallurgical structure consists of two phases, austenite (face-centered cubic lattice) and ferrite (body centered cubic lattice) in roughly equal proportions. They are designed to provide better corrosion resistance, particularly chloride stress corrosion and chloride pitting corrosion, and higher strength than standard austenitic stainless steels such as type A2/304 or A4/316. The main differences in composition, when compared with an austenitic stainless steel is that the duplex steels have a higher chromium content, 20-28%; higher molybdenum, up to 5%; lower nickel, up to 9% and 0.05-0.50% nitrogen. Both the low nickel content and the high strength (enabling thinner sections to be used) give significant cost benefits. They are therefore used extensively in the offshore oil and gas industry for pipework systems, manifolds, risers, etc. and in the petrochemical industry in the form of pipelines and pressure vessels. In addition to the improved corrosion resistance compared with the 300 series duplex stainless steels also have higher strength. For example, a Type 304 stainless steel has a 0.2% proof strength in the region of 280 MPa (41 ksi), a 22%Cr duplex stainless steel a minimum 0.2% proof strength of some 450 MPa (65 ksi) and a superduplex grade a minimum of 550 MPa (80 ksi).
Material | Stainless Steel 304/304L/316L/UNS,S32001,S31803,S31254 |
Shape | Round |
Production Standards | ASTM A270, ASTM A269, ASTM A249, ASTM A778, ASTM A789, DIN 11850, EN 10357, EN 10217-7 and so on. |
Outer Diameter | 16mm - 2000mm ; |
Thickness | 0.8mm - 20 mm ; |
Length | 6 Meters - 18.3 Meters ; As customers' request ; |
Tolerance | According to the Standard , +/-10% Commonly ; |
Surface Treatment | 180#, 320#, 400# Satin / Hairline, Bright Anneal, Pickle,400#, 500#, 600# or 800# Mirror finish |
Application | Petrochemical Industry ; Chemical Fertilizer Industry ; Oil Refining Industry ; Oil And Gas Industry ; Light Industry And Food Industry ; Pulp And Paper Industry ; Energy And Environmental Industries . |
Test | Flaring test ; Flattening test ; Bending Test ; Hydraulic Test ; Eddy Current test |
Design | OEM / ODM / Customized |
Certificate | ISO9001 ; ISO14001; ISO 18001; TUV ; |
Stainless Steel Mechanical Properties | ||||||
Grade | Tensile Strength | Yide Strength | Elogation | Hardness | Solution Annealing | |
kgf/mm²(N/mm²) | kgf/mm²(N/mm²) | % | HRB(HV) | ºC | ||
ASTM | TP 304 | ≥53 (515) | ≥21 (205) | ≥35 | ≤90 (200) | 1040ºC-1150ºC Water Quenching |
TP 304L | ≥50 (485) | ≥17 (170) | ||||
TP 316 | ≥53 (515) | ≥21 (205) | ||||
TP 316L | ≥50 (485) | ≥17 (170) | ||||
JIS | SUS 304 | ≥53 (520) | ≥21 (205) | 1010ºC-1150ºC Water Quenching |
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SUS 304L | ≥49 (480) | ≥18 (175) | ||||
SUS 316 | ≥53 (520) | ≥21 (205) | ||||
SUS 316L | ≥49 (480) | ≥18 (175) | ||||
GB | 06Cr19Ni10 | ≥53 (520) | ≥21 (210) | 1010ºC-1150ºC Water Quenching |
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022Cr19Ni10 | ≥49 (480) | ≥18 (180) | ||||
06Cr17Ni12Mo2 | ≥53 (520) | ≥21 (210) | ||||
022Cr17Ni12Mo2 | ≥59 (480) | ≥18 (180) | ||||
EN | 1.4301 | (500-700) | ≥20 (195) | ≥40 | 1000ºC-1100ºC Water Quenching |
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1.4307 | (470-670) | ≥18 (180) | ||||
1.4401 | (510-710) | ≥21 (205) | 1020ºC-1120ºC Water Quenching |
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1.4404 | (490-690) | ≥19 (195) |
Stainless Steel Heat Exchanger Tube | ||||
Standard | OD(mm) | WT(mm) | Length(meters) | Grade |
ASTM A249, ASTM A269, EN 10217-7 |
15.88 to 114.3 | 0.3 to 4.0 | Up to 18.3 meter | 1.4301, 1.4306, 1.4404, AISI 304/304l/316l, S31803/S32205, etc |
Standard | Outside Diameter | Thickness | Length | |
ASTM A249 (A1016) |
<25.4 | ±0.10 | ±10%S | OD<50.8+3-0 OD≥50.8+5-0 |
≥25.4~<38.1 | ±0.15 | |||
≥38.1~<50.8 | ±0.20 | |||
≥50.8~<63.5 | ±0.25 | |||
≥63.5~<76.2 | ±0.31 | |||
ASTM A269 (A1016) |
<38.1 | ±0.13 | OD<12.7±15% OD≥12.7±10% |
OD<38.1+3.2-0 OD≥38.1+4.8-0 |
≥38.1~<88.9 | ±0.25 | |||
≥88.9~<139.7 | ±0.38 |
Chemical Composition | Tensile Strength | Yield Strength | Elongation | Hardness HRB |
Grade 304 Stainless Steel (100% & MPA) | ||||
C≤0.08, Mn≤2, P≤0.045, S≤0.03, Si≤0.75, 8≤Ni≤10.5, 18≤Cr≤20 | ≥515 | ≥205 | ≥40 | ≤92 |
Grade 304L Stainless Steel (100% & MPA) | ||||
C≤0.03, Mn≤2, P≤0.045, S≤0.03, Si≤0.75, 8≤Ni≤12, 18≤Cr≤20 | ≥485 | ≥170 | ≥40 | ≤92 |
Grade 316L Stainless Steel (100% & MPA) | ||||
C≤0.03, Mn≤2, P≤0.045, S≤0.03, Si≤0.75, 10≤Ni≤14, 16≤Cr≤18 | ≥485 | ≥170 | ≥40 | ≤95 |
1. Are you a munufacturer or a trading company ? |
We are manufacturer for most sizes above-listed, also help customer for the whole package if necessary. |
2. Where is your plant located in China ? |
Carbon steel plant at Cangzhou City, Stainless steel Plant at Lishui City... 3 plants as given on website. |
3. Do you have a certified quality assurance system ? |
Sure. ISO 9001:2015 |
4. Can visit your plant before order ? |
Sure. We respect and welcome all client's plant trip. |
5. What is the market percentage for domestic and international sales ? |
Dometics market share around 70%, internatioan sales less than 30% in the past 5 years. |