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Quick Details

  • Standard: ASTM, AISI, DIN, EN, GB, JIS, ASTM A213, ASTM A312, ASTM A269
  • Place of Origin: Shanghai, China (Mainland)
  • Brand Name: SMC
  • Model Number: 200series&300series&400 series
  • Type: Welded & Seamless
  • Steel Grade: 300 Series
  • Application: Petroleum,Chemical enterprise, superheater of boiler, heat exchanger
  • Certification: ISO
  • Welding Line Type: ERW
  • Thickness: 0.3mm-2.0mm
  • Outer Diameter: 8mm-101.6mm
  • Name: stainless steel welded pipe
  • Length: as demand
  • Surface finish: pickling, annealing, manual polish and mechanical polish
  • Features: non corrosive
  • Manufacture technology: cold rolled, cold drawn
  • OD range: 8mm-101.6mm
  • Grade: 201,202,301, 321, 304, 304L, 316, 316L, 409, etc

Packaging & Delivery

Packaging Details Standard export packing or following customer's demand for stainless steel welded pipe
Delivery Time Shipped in 15 days after payment

 

 

stainless steel welded pipe

 

Specifications of  stainless steel welded pipe

1. Standard: ASTM A213, ASTM A312, ASTM A269, ASTM A789, JIS G3448, JIS G3456,

JIS G3459, JIS G3463, DIN 10216, DIN 17458

2. Grade: 201,202,301, 321, 304, 304L, 316, 316L, 409, etc

3. OD range: 8mm-101.6mm

4. Wall thickness range: 0.3mm-2.0mm

5. Length:  as demand 

6. Surface finish: pickling, annealing, manual polish and mechanical polish, mirror polish

7. Manufacture technology: cold rolled, cold drawn

 

Applications of stainless steel welded pipe :

1)Food producing equipment, particularly beer brewing, milk processing & wine making;
2)Kitchen benches, sinks, troughs, equipment and appliances;
3)Architectural paneling, railings & trim;
4)Chemical containers, including for transport;
5)Heat Exchangers;
6)Woven or welded screens for mining, quarrying & water filtration;
7)Threaded fasteners;
8)Spring

 

Manufacturing Process of stainless steel welded pipe :

The process commences with the formation of welded mother tube on the tube mill from imported and tested prime quality stainless steel strips. The latest TIG multi electrode welding technique is employed for superior weld quality and 100% Fusion, with argon purging, No filler metal added.

 

These mother tubes are solution annealed at 1060 D. 1100 D. C in continuous annealing furnace followed by immediate quenching to prevent chromium carbide precipitation.

 

Annealing of mother tuber ensures:

A) Removal of stress induced during tube forming and cold drawing:

B) Sufficient ductility and softness for cold drawing:

C) Transformation of the weld zone to austenitic nature,

D) Re crystallization of metallic grains to original form and thereby improving corrosion resistance.

 

During annealing, scales are formed on the surface of the tubes. In order to remove these, the tubes are pickled by immersing into hot pickling solution made of nitric acid, sulphuric acid and hydrofluoric acid.

 

The tubes are then coated with proper lubricant and then cold drawn over a drew bench:

1) To vary the metallurgical structure and restore the properties to the parent material:

2) To achieve a tube having closer dimensional tolerances:

3) To achieve a tube having closer dimensional tolerances:

4) To produce tubing of smaller size and wall thickness.

5) To reorient the grain structure of weld portion with that of the parent material and

6) To remove/minimize the internal bead.

 

Drawing is followed by subsequent annealing and pickling to restore the properties of the entire tube to that of the parent material. The tubes are then passiated to impart extra corrosion resistance. Thereafter every tube is electrically marked with material grade, size and manufacturing standard.

 

Technical Notes:

Chemical composition & Mechanical Property

Grade and Main chemical composition%
 CSiMnP≤S≤CrMoNiOther
201≤0.15≤1.005.5-7.50.060.0316-18-3.5-5.5N≤0.25
202≤0.15≤1.007.5-10.00.060.0317-19-4.0-6.0N≤0.25
301≤0.15≤1.00≤2.000.0450.0316-18-6.0-8.0-
302≤0.15≤1.00≤2.000.0450.0317-19-8-10.0-
303≤0.15≤1.00≤2.000.2≥0.01517-19≤0.68.0-10.0-
304≤0.08≤1.00≤2.000.0450.0318-20-8-10.5-
304L≤0.03≤1.00≤2.000.0450.0318-20-9-13-
305≤0.12≤1.00≤2.000.0450.0317-19-10.5-13-
309S≤0.08≤1.00≤2.000.0450.0322-24-12-15-
310S≤0.08≤1.5≤2.000.0450.0324-26-19-22-
316≤0.08≤1.00≤2.000.0450.0316-182-310-14-
316L≤0.03≤1.00≤2.000.0450.0316-182-312-15-
317≤0.08≤1.00≤2.000.0450.0318-203-411-15-
317L≤0.03≤1.00≤2.000.0450.0318-203-411-15-
321≤0.08≤1.00≤2.000.0450.0317-19-9-13Ti≥5×C
405≤0.08≤1.00≤1.000.040.0311.5-14.5-≤0.6AL0.1-0.3
420F0.26-0.4≤1.00≤1.250.06≥0.1512-14≤0.6≤0.6-
430≤0.12≤0.75≤1.000.040.0316-18-≤0.6 

 

ClassificationMechanical Properties
USATensile test (Min)Hardness (Max) 
AISIYield StrengthTensile StrengthElongationHBHRBHV
kg/mm2N/mm2kgf/mm2N/mm2
Austenite30121206535204018790200
 30421206535204018790200
 304L18177494814018790200
 30518177494814018790200
 310S21206535204018790200
 31621206535204018790200
 316L18177494814018790200
Ferrite43021206464512218388200
 43421206464512218388200
Martensite41021206454412020093210
 42023226535201822397234
 42023226555391823599247

 

SMC's promise: 

As the word leading manufacturer and supplier, Shanghai Metal Corporation makes“Service,Management,Craftsmanship."  In our commitment to deliver world class service, SMC's Quality Control Department not only promise to provide the best quality products, excellent customer services,  fast and reliable deliveries, and reasonable prices; but also goes the extra step to provide environment conscious products that will improve lives.

 

Our Products:

 

Package of  stainless steel welded pipe
Please don’t worry that our products are packed, stored, transported according to the international regulation. We do care about the quality of our products; even some little details are paid attention to.
We wrap the stainless steel products with anti-rust paper and steel rings to prevent damage. Identification labels are tagged according to standard specification or customer's instructions. Special packing is available as per customer's requirement.
Plus, our storage racks are made of wood. Other kinds of metals are settled in other places, far from the stainless steel. Any unwanted chemical reaction can be prevented.

 

Export Markets
Our target market is the international market. Every year we export most of products to countries like India, Pakistan, South Korea, Brazil, Australia, South Africa, Spain, Sri Lanka, Taiwan, Hong Kong, etc.

 

All the products in alibaba are just for show.For more details, you can visit our official website: www.shanghaimetal.com.


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