The stainless steel pipes which are manufactured in 304, 316 or 316L stainless steel can be finished to suit customer requirements and are available with internal and external finishes from descaled up to 1.2μm Ra. For applications where a crevice free environment is critical, Baofeng’s steel pipes can be supplied with both internal and external welds ground smooth.

The company’s in-house processes include machining, orbital and manual welding, fabrication, polishing, pickling, passivation, surface finish, full Ra testing and certification, ferroxyl, pressure testing with pipes.

The material we know as stainless steel (also commonly referred to as “Inox” or “Rostfrei“) is such a common feature of 21st century living that there can be few of us who have not seen or handled articles made from it. But how many of us really know what stainless steel is?

Like all types of steel, stainless steel is not a single metal but an alloy that is a material made from two or more separate elements alloyed or “melted” together. What all steels have in common is that their major “ingredient” (alloying element) is the metal iron, to which a small amount of carbon has been added. Stainless steel was invented early in the 20th century when it was discovered that a certain amount of the metal chromium (usually 11 per cent to 20 per cent)  added to ordinary steel gave it a bright shiny gloss and made it highly resistant to tarnishing and rusting. This rust-resisting property which we call “corrosion resistance” is what sets stainless steel apart from most other forms of steel.

It is important to appreciate that stainless steel is a solid material and not a special coating applied to ordinary steel to give it “stainless” properties. Conventional steels and, indeed, several other metals, are often coated or “plated” with white metals such as chromium, nickel or zinc to protect their surfaces or to provide other surface characteristics. While such coatings have their own benefits and are still widely used, the danger exists that the coating can be penetrated or damaged in some way, such that its protective effect is undermined.

Normal stainless steel grade is TP304, TP316L, TP317L, TP347H,TP310S,TP309……

Want to know more information please contact us:

http://www.stainless-steel-seamless-pipe.com/contacts/

The processing Mechanical properties

1.1 and general stainless steel welding performance as, 90 4 L can use a variety of welding welding. The most common way for manual arc welding or inert gas welding, metal welding rod or wire based on the composition and purity of the base metal higher molybdenum content requirements than the base metal. Warm-up before welding is generally not required, but in the cold outdoor work, in order to avoid condensation of water vapor, or near the region of joints can be used for uniform heating. Note that the local temperature should not exceed 10 0 ℃, so as not to cause the carbon concentration, causing intergranular corrosion. Welding should be adopted when a small line of energy, continuous and fast welding speed. Post-weld heat treatment is generally not required, for the heat treatment must be heated to 110 0 ~ 1150 ℃ after rapid cooling.

1.2 90 4 L machining performance characteristics similar to other machining austenitic stainless steel, tool processing viscous and hardening trend. To adopt the positive rake angle carbide cutting tools to sulfide and chlorinated cutting oil as a coolant, equipment and technology should be to reduce the work hardening as a precondition. Cutting process should avoid using slow cutting speed and feed amount.

Chemical content of TP904L:

Exhibition Name: TUBOTECH 2011Exhibition Add: Imigrantes Exposicoes  Sao Paulo/Brasil   Rodavia dos Imigrantes,km 1,5, Sao Paulo, Brasil Time : Oct 4th-6th.2011Our booth :526

You are welcome to visit us and have discuss with us.

6 September 2011 - 8 September 2011
The 7th International Stainless Steel Expo (STEXPO 2011)
Shanghai New International Exposition Center, Shanghai, China

13 September 2011 - 15 September 2011
International Wire & Cable Trade Fair / Tube Southeast Asia
Bangkok, Thailand

21 September 2011 - 23 September 2011
7th European Stainless Steel Conference
Como, Italy

23 September 2011 - 23 September 2011
Africa Energy Week Conference and Exhibition
Integrating the 14th Gulf of Guinea Oil and Gas Conference and Africa 

Energy Week to focus on African oil and gas issues and to promote

 investment in the continent’s hydrocarbon sector. Accra, Ghana

25 September 2011 - 29 September 2011
8th European Congress of Chemical Engineering
Together with 29th DECHEMA’s Biotechnology Annual Meeting, Berlin, Germany

26 September 2011 - 29 September 2011
International Thermal Spray Conference & Exposition
Hamburg, Germany

4 October 2011 - 6 October 2011
OTC Brasil 2011
In Rio de Janeiro, Brazil The inaugural 2011 OTC Brasil technical conference will present addresses

 from prominent industry leaders and experts in special sessions on key issues facing the Brazilian

 and global offshore oil and gas industry.

4 October 2011 - 6 October 2011
Tubo Tech
Brazil Centro de Exposicoes Imigrantes, Sao Paulo, Brazil

12 October 2011 - 13 October 2011
All-Energy Australia
All-Energy Australia is the sister show to All-Energy UK, Europe’s all-renewables event Melbourne Convention & Exhibition Centre, Melbourne, Australia

18 October 2011 - 21 October 2011
Brazil Welding Show
Expo Centre Norte São Paulo, Brazil

1 November 2011 - 3 November 2011
54th CPI (Chemical Process Industries) Exposition and Educational Conference
November 1-3, 2011 Jacob K. Javits Convention Center New York, NY

29 November 2011 - 1 December 2011
Stainless Steel World Conference & Exhibition 2011
MECC Maastricht, The Netherlands

26 March 2012 - 30 March 2012
Tube & Wire 2012
Düsseldorf Fairgrounds, Düsseldorf, Germany

1) Size: (6-630) x (1-20) x (4000 – 13000)mm
2)The main standards are 304, 304L, 316, 316L, 321, 321H, 310S, 347H