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ASTM A312 304/304L 316/316L Steel Seamless Stainless Pipe

Thickness:0.3-100mm or customer;
Outer Diameter:5-300mm or customized;
Customization: Customized logo
Type: Seamless;
Supply Ability:3000 Ton/Tons per Year

Quantity:

  • ASTM A312 304/304L 316/316L Steel Seamless Stainless Pipe
  • RONSCO

Stainless steel pipe is a hollow section, the surrounding no seam of the long steel. It is resistant to air, steam, water, and other weak corrosive media and acid, alkali, salt and other chemical corrosive media corrosion of the steel pipe. Also known as stainless acid-resistant steel pipe. Widely used in petroleum, chemical, medical, food, light industry, mechanical instrument lights industrial pipelines, and mechanical structural components. In addition, in the bending, anti-girl strength the same, the lighter weight, so widely used in the manufacture of mechanical parts and engineering structure. Also used for the production of conventional weapons, barrels, shells and so on.



NameASTM A312 304/304L 316/316L Steel Seamless Stainless Pipe
SpecificationASTM A213, ASTM A269, ASTM A312, EN10216-5, GB/T14976-2012
Steel GradeSS304/SS304L, SS316/SS316L
SizeOD:3-50.8mm, wall thickness: 0.5-4mm
Length4m,6m or customized
Delivery ConditionsBA(Bright Annealed), Mechanical Polished, Electro-polished( EP)
FeaturesBright Annealed for the finished tube, high cleanness, and high precision of inside and outside surface, good mechanical properties, excellent cold bending ability, high-temperature resistance and anti-oxidation. We also provide polishing and pipe cutting service
ApplicationsUsed in automobile, precision instruments, hydraulic system, machinery, petroleum, chemical, and gas field.
PackingPlastic film & Knitting Bundled, Plywood Case or as request
Delivery Time30-60days after order confirmed

2. Chemical Composition:
GradeCSiMnPSCrNi
304≤0.08≤1.00≤2.00≤0.045≤0.030≤18.0-20.0≤8.0-10.5
304L≤0.030≤1.00≤2.00≤0.045≤0.030≤18.0-20.0≤8.0-10.5
 
GradeCSiMnPSCrNiothers
SUS316≤0.08≤1.00≤2.00≤0.045≤0.03016.0~18.010.0~14.0Mo:2~3
SUS316L≤0.03≤1.00≤2.00≤0.045≤0.03016.0~18.012.0~15.0Mo:2~3

3. Mechanical Properties&Hardness:
GradeYS(Mpa)TS(Mpa)EL(%)Hv
304≥205≥520≥40≤200
304L≥175≥480≥40≤200
 
GradeYS(Mpa)TS(Mpa)EL(%)Hv
SUS316≥205≥520≥40≤200
SUS316L≥175≥480≥40≤200
 
Standard 
Item
ASTM A213ASTM A269ASTM A312
Grade304  304L 304H   304N  304LN 
316  316L 316Ti   316N  316LN 
321  321H   310S   310H  309S 
317  317L 347 347H
304  304L 304H 304N 304LN 
316  316L 316Ti 316N  316LN 
321 321H  310S 310H  309S 
317  317L 347 347H
304  304L 304H   304N  304LN 
316  316L 316Ti   316N  316LN 
321  321H  310S   310H  309S 
317  317L  347 347H
Yield Strength 
(Mpa)
≥170;≥205≥170;≥205≥170;≥205
Tensile Strength 
(Mpa)
≥485;≥515≥485;≥515≥485;≥515
Elongation(%)≥35≥35≥35
Hydrostatic TestD(mm)Pmax
(Mpa)
D(mm)Pmax
(Mpa)
D(mm)Pmax
(Mpa)
D<25.47D<25.47D≤88.917
25.4≤D<38.11025.4≤D<38.110
38.1≤D<50.81438.1≤D<50.814
50.8≤D<76.21750.8≤D<76.217D>88.919
76.2≤D<1272476.2≤D<12724
D≥12731D≥12731
P=220.6t/DP=220.6t/DP=2St/D S=50%Rp0.2
Intergranular Corrosion TestASTM A262 EASTM A262 EASTM A262 E
Eddy Current TestASTM E426ASTM E426ASTM E426
O.D. Tolerance 
(mm)
O.D.O.D.
Tolerance
O.D.O.D.
Tolerance
O.D.O.D.
Tolerance
D<25.4+/-0.10D<38.1+/-0.1310.3≤D≤48.3+0.40/-0.80
25.4≤D≤38.1+/-0.15
38.1<D<50.8+/-0.2038.1≤D<88.9+/-0.2548.3<D≤114.3+0.80/-0.80
50.8≤D<63.5+/-0.25
63.5≤D<76.2+/-0.3088.9≤D<139.7+/-0.38114.3<D≤219.1+1.60/-0.80
76.2≤D≤101.6+/-0.38
101.6<D≤190.5+0.38/-0.64139.7≤D<203.2+/-0.76219.1<D≤457.0+2.40/-0.80
190.5<D≤228.6+0.38/-1.14
W.T. Tolerance 
(mm)
O.D.W.T.
Tolerance
O.D.W.T.
Tolerance
O.D.W.T.
Tolerance
D≤38.1+20%/-0D<12.7+/-15%10.3≤D≤73.0+20.0%/-12.5%
12.7≤D<38.1+/-10%88.9≤D≤457.0 
t/D ≤5%
+22.5%/-12.5%
D>38.1+22%/-0
D≥38.1+/-10%88.9≤D≤457.0 
t/D >5%
+15.0%/-12.5%

Product Manufactuer Processing:




Why Choose Ronsco:


1.Efficiency: delivery 7-15 days after receiving the deposit, regular specifications are in stock;

2.Research and development: 10% of the turnover per day for research and development, with 10 More than 15 years of R&D experience engineers, new product launch every 6 months;

3.Service: one-on-one service, quick response to customer problems, professional product knowledge, Production, and logistics tracking services, after-sales service, providing customers with customized packaging and poster services;


Packaging And Shipping:


Packaging: Woven bag or wooden case.

Shipping:

Cold Drawing
Cold drawing reduces the diameter by pulling the tube through a die that is smaller than the tube. In order to fit
the tube into the die, one end is swaged thereby reducing the diameter of the leading end before drawing.
Next, the narrowed end is passed through the die and clamped to a drawing trolley which pulls the tube through the die.

Annealing
Annealing is used to soften the metal before further cold working or fabrication processes and improves the
overall metallurgical microstructure of the tube. During tube reduction or cold drawing, it can become hard and
somewhat brittle. To be able to draw the tube again stresses formed during cold working need to be removed to
return the material to its normal state.
During annealing, the tube is heated to a controlled temperature and soak time. Through this process, the tube
remains in shape, but the grains in the structure of the tube reform into a regular unstressed pattern. The resulting
annealed tube is softer and suitable for redrawing

Straightening
Drawing and annealing generally result in some degree of bowing, producing a slight bend in the tubing. In order to
make the tubes straight, we use multiple roll mechanical straighteners to implement this procedure, Straightening can
introduce slight changes to the size and mechanical properties of the tubing, so these aspects are very carefully controlled
during the process.

5. Inspection and Tests
We inspect all lots of tubing before shipment to ensure that every aspect of the customer's order has been met.
Our in-house inspection and tests capabilities include:

Cold drawing reduces the diameter by pulling the tube through a die that is smaller than the tube. In order to fit
the tube into the die, one end is swaged thereby reducing the diameter of the leading end before drawing.
Next, the narrowed end is passed through the die and clamped to a drawing trolley which pulls the tube through the die.

 
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