Written by admin on 11/02/2010 – 11:09 am
Chinese pipe manufactuers face import duties Chinese manufactuers of steel pipes such as Baofeng steel group will face import duties after the US Department of Commerce ruled in the favor of a complaint by US Steel Corp. Meanwhile, Argentina said it would extend the anti-dumping investigation period for steel pipe and fluorochloromethane imports from China, according [...]
Written by admin on 09/13/2010 – 10:15 am
Usage of stainless steel in Marine Environments The metals most commonly used today in the construction of yachts, marine structures and fittings are stainless steel and aluminium. While aluminium is light, it has limited corrosion resistance in seawater and requires significant maintenance. Stainless steel, on the other hand, is recognised as the premium material for [...]
Written by admin on 09/07/2010 – 2:05 pm
Square Steel Pipes and Tubes In a large number of industries, square steel pipes are used. The production of this kind of pipes is increasing day by day. With compare to round steel pipes, square steel pipes are little more efficient. The reason is that the square column is more efficient than the solid circular [...]
Written by admin on 08/24/2010 – 2:52 pm
TP316L Principal Design Features 316L is often substituted for 316 stainless due to its superior weldability with no appreciable difference in price or properties. It combines good availability in all forms and size ranges with great strength and corrosion resistance. Applications Components used in marine environments and chemical equipment. Suitable for any application where 316 [...]
Written by admin on 08/20/2010 – 2:35 pm
304 Principal Design Features: One of the most widely used and oldest of the stainless steels. This was originally called 18-8 which stood for its chromium and nickel content. It possesses an excellent combination of strength, corrosion resistance and fabricability. It is available in the widest variety of forms and sizes of any stainless steel. Applications: The list is endless. Almost every conceivable industry uses some of this material in some way. Everything from stovetops to ball point pen barrels to flatware to fasteners has been fabricated from this alloy. Machinability: Slow speeds and heavy feeds will minimize this alloys tendency to work harden. Due to long stringy chips, the use of chip breakers is advisable. Many companies now offer premium machinability grades, such as with their Project 70 and 7000 series. Welding: All fusion and resistance processes have been successfully employed in welding 304. AWS E/ER308 or 312 filler metal is recommended. For cleaner, stronger welds, may users choose 304L which has a controlled low carbon content designed to reduce carbide precipitation at the weld boundaries. Hot Working: Forging, heading and other hot working should follow uniform heating to 2100-2300 F (1149-1260 C). Rapid cooling is necessary to attain maximum corrosion resistance in finished parts. Cold Working: Readily fabricated by most cold working methods, 304 may require intermediate annealing to avoid cracking or tearing from radical deformation. Full annealing should follow any operation to reduce internal stress and optimize corrosion resistance. Annealing: 1850-2050 F (1010-1121 C) followed by rapid cooling. Hardening This alloy does not respond to heat treatment. Cold work will cause an increase in both hardness and strength. For details, you also can refer http://www.stainless-steel-seamless-pipe.com/
Written by admin on 06/07/2010 – 10:48 am
MECHANICAL COMPOSITION Grade Designation Chemical Composition Per Cent Nearest Environment Specification AISI C Max Mn Max P Max S Max SI Max Cr N MO Other element I.S En 201 0.15 5.50/7.50 0.06 0.03 1 16.0/18.0 3.5/5.5 – N-25 Max I.S – 202 0.15 7.50/10.0 0.06 0.03 1 17.0/19.0 4.0/6.0 – N-25 Max – - 301 0.15 2.0 max 0.045 0.03 1 16.0/18.0 6.0/8.0 – - 10Cr17Ni7 – 302 0.15 [...]
Written by admin on 03/18/2010 – 2:37 pm
2010 FEBRUATY 10-12 Tube India 2010 → Website: www.tube-india.com Mumbai, India MARCH 4-7 Boru 2010 → Website: www.borufuari.com Istanbul, Turkey APRIL 12-16 Tube/wire Dusseldorf → Website: www.tube.de Dusseldorf, Germany MAY 24-27 Tube Russia 2010 →Website: www.metallurgy-tube- russia.com Moscow, Russia SEPTEMBER 21-24 Tube/wire China 2010 → Website: www.mdc.com.cn [...]
